Apollo 13 Real-time

Overview

Getting to the Moon and home again involved a small number of broad, basic tasks:

While Apollo was, in aggregate, an immensely complex system comprised of countless components, miles of wiring and circuitry, and cutting-edge-for-the-time technology, we can vastly simplify our effort to understand the spacecraft by approaching it at a high level from these three fundamental problem areas. Each is covered in detail in the Overview section.

There are a few other elemental concepts to understand before diving in:

Redundancy 101

Sending humans into space is a big deal, and it's dangerous. While the basic principles and science behind many aspects of spaceflight may be independently simple, the engineering reality is that things fail. Nearly every NASA mission at this point had a major quirk or two to deal with.

The most robust way to deal with failure is to increase the safety factor by introducing redundant systems. Each Space Shuttle Main Engine, for example, had two computers with two processors each, and a system that would redelegate control if errant calculations were detected. But in the Apollo days, redundancy didn't always mean identical backups. Often, to save weight, money, or complexity, the redundant systems were actually entirely independent designs. Sometimes this could actually be an advantage, as different designs will have different strengths and weaknesses, and thus different failure points.

Both Apollo spacecraft, for example, had one primary navigational sensor: the Inertial Measurement Unit. The IMU was a big powered gyroscope that tracked orientation, much like your smartphone today can detect how it's being tilted and rotated around. The IMU gyroscope was mounted on three freely rotating gimbal axes; it's a lot like turning about while holding a compass, except instead of magnetic force it is the rotational inertia of the spinning gyro that holds the "needle" still, and instead of one axis around which to rotate there are three. This allowed it to read the spacecraft's absolute orientation relative to its static reference angle, much like you can always read your bearing relative to magnetic North on a compass. This allowed great precision and confidence, but it also created a problem state known as gimbal lock, as the three gimbals together couldn't quite follow the spacecraft across certain extreme angles.

The backups to the IMU, then, were known as Body Mounted Attitude Gyros, or BMAGs. There were two of them in the Command Module, and rather than turning about freely on gimbals, they were locked down rate gyros. This meant they could only measure the rate of change of orientation rather than measure the absolute orientation. This is a bit like telling how far you've driven down a highway by sampling your speedometer over time and doing some math: it ought to work, but tiny imprecisions in measurement can throw you off. A really long tape measure will give you an absolute answer with far more confidence, and so the IMU was the preferred instrument. But the BMAGs were lighter, and because no rotating gimbals were involved they were not susceptible to gimbal lock.

Another example is the Abort Guidance System (AGS) on board the Lunar Module. It served as the backup to the Apollo Guidance Computer and some of its associated sensor systems (collectively known as the Primary Guidance, Navigation, and Control System, or PGNCS), in case it failed during a landing. In that case, the landing would be called off and the focus moved to getting back to orbit and rendezvousing with the still-orbiting Command/Service Module for the trip home: a much simpler task. Thus, the AGS had far fewer features than the AGC—and simplicity is often a recipe for greater robustness. You'll hear discussion of using the less power-hungry AGS in lieu of the AGC for the trip around the Moon in the final stages of the audio recording.

Lastly, sometimes redundancy simply wasn't practical. The Command/Service Module had two main DC electrical buses (A and B) that circulated electricity around the spacecraft. With hundreds or thousands of total sensors and components to wire, you can imagine that sending two entire loops of wiring to every single piece of electronics was not only infeasible, it would mean a greater chance of mistakes or accidents, and a far heavier spacecraft. In some cases, this meant that some instruments or components were only available on one bus or the other. In other cases, a hybrid approach was taken: of the three Command Module inverters that converted DC to AC power, for example, the first could only pull electricity off the A bus, the second only the B bus, and the third inverter could draw from either A or B.

Orbital Mechanics 101

Much has been written about this popularly misunderstood and rather counterintuitive topic. We can avoid most of the details here, and instead focus on developing a basic-enough grasp to understand what is happening in these six hours.

The first thing to understand is that given any instantaneous velocity (speed and direction) and position of an object above Earth, we can definitively (with some handwaving) calculate its entire orbit. Somewhat simplistically, this follows from calculating basic Newtonian physics, such as the Universal Law of Gravitation, over time. This observation isn't terribly intuitive or informative on its own, but it helps us think about what happens when we change the two parameters involved: velocity and position. As an example, it is not possible to speed up or slow down without profoundly affecting the shape of one's orbit; this is commonly misunderstood and incorrectly depicted in popular films.

The second thing to understand is just how fast orbital speed is. In Earth orbit roughly 100nm (115mi/185km) above the surface, the Apollo spacecraft would typically be travelling at over 28,000km/h (~17,500mph). Most of a rocket's launch efforts are not invested in pushing the spacecraft up, but rather in hurling it sideways.

The reason this is important to understand is because one must realize how little impact maneuvering or even full engine burns have on a spacecraft's immediate location or trajectory. A typical Apollo mid-course correction burn might modify its speed by somewhere between 20km/h and 150km/h: these changes are minuscule adjustments to the incredibly fast speeds described above, and have next to no impact on the spacecraft's immediate path.

{{figure:orbits-fail}}

Instead, what a burn has far more impact on is the overall shape of the orbit. Let's try this out (figure 1). On the left is a typical Apollo orbit just after launch: the numbers described just above. The orbit and planet are to scale, while the spacecraft is blown up so you can see which way it's burning. Notice how close the orbit is to the surface of the planet, despite the spacecraft being well into space. We want to go to the moon, so let's wait until we're as close as possible, point at it, and burn for a little bit. We will increase our speed by 5,400 km/h to 32,400 km/h.

That didn't work at all. In fact, despite going faster we are now destined to crash back into Earth. This is because we forgot about our second observation, that our burns are relatively small percentages of the spacecraft's base speed. We're not going to be able to overwhelm the momentary velocity taking us parallel to the Moon by adding a small percentage of it towards the Moon.

{{figure:orbits-prograde}}

Let's try working with the speed we already have, then. We'll burn exactly the same amount, just in our direction of travel (figure 2).

That was more interesting. By burning in the same direction as our travel, we modified the opposite side of our orbit by moving it outwards significantly. Remember again: we can change the shape of our orbit by changing our speed, but most changes we can make don't really have much effect on our immediate local path. So all that change goes elsewhere in the orbit: in this case, to the opposite side.

It doesn't matter much today, but this is known as a prograde burn. Of course, if we wanted to go to the Moon, we'd want to do exactly the same thing but on the other side of Earth.

{{figure:orbits-retrograde}}

We can invert this effect by turning around so that instead our engines point in the direction of our travel, and burning. This is called a retrograde burn (figure 3).

{{figure:orbits-subtle}}

The final example (figure 4) demonstrates just how profoundly small changes in velocity can affect the orbit. From an orbit that just reaches the Moon, we'll decelerate by a mere 20m/s—not even highway car speed. It may not look like much on this extreme scale, but that small change is the difference between passing comfortably over the surface of the Earth by a margin of ~1,200,000km (~740,000mi) and smashing into the Earth while trying to pass ~270,000km (~168,000mi) below its surface.

When you listen to the astronauts worry about small details like the particular set of thrusters they are using to point the spacecraft in different directions, it is this effect that they are keenly aware of—particularly with a close approach to the Moon coming up.

There are other types of burns that do different things—we'll cover just one more. Prograde and retrograde burns modify the orbit, but only within the 2D plane in 3D space that the spacecraft is already travelling within. If that plane itself needs to change, this can be done by burning orthogonally to it. But recall again our second observation, that changing our immediate path is really difficult. Changing our plane necessarily involves changing our entire path, including our immediate path. So this is really expensive to do, fuel-wise.

These burn examples illustrate the third thing to understand, which is that much like orbits, burns can be described by two basic parameters: the point in orbit of the burn and the change in velocity (commonly referred to as ΔV). Because rocket engines do not instantaneously modify a spacecraft's speed by tens or hundreds of km/h and because it is easier to keep an eye on a clock than a position in the universe, this is more practically delivered to the astronauts and executed upon with three primary datapoints: clock time of burn, attitude of the spacecraft during the burn, and how long to burn for. (In reality, there are additional parameters for the computer's use, for checking star alignments, and other details.) These figures would be read up and written down on a pre-printed PAD form.

Our last note will be that nothing is ever so clean as presented here. In reality, any object orbiting anywhere in the Solar System is affected by a multitude of gravitational forces, the Earth is not actually spherical nor is its weight distributed evenly, and no burn is ever purely prograde or retrograde or plane change. Many, many factors go into actual orbital and burn calculation. For Apollo, these factors were all calculated on massive computers on the ground over the course of the mission.

Rocketry 101

There is one very important thing to understand about rocketry itself: the fuel is most of the weight you carry into orbit. If you want to go a bit further, you have to add some fuel. But then you also have to carry that fuel to the new, further point you wish to burn it, so you have to add even more fuel just to carry that added fuel—and so on. This game hits diminishing returns pretty quickly, and it's why the Saturn V is as incredibly gigantic as it is.

But the flip-side of this is that the spacecraft gets vastly lighter as it burns that fuel, while the engines remain just as powerful. This means that by the time the spacecraft is on its way to the Moon, for example, and has burned most of its fuel, that little bit of fuel left can cause, percentage-wise, an immense amount of change in spacecraft velocity.

This nonlinearity is why rockets and spacecraft are typically not accounted in terms of liters or gallons of fuel remaining, but rather in ΔV remaining: how much more change in velocity do we have in reserve?

It is also a big factor in the design of the Apollo architecture, as we shall cover briefly.

{{figure:mocr}}

There are many fantastic, complete references on the various flight controllers, their roles, and the people involved. The Ars Technica article is a great, free place to start; the book Go, Flight! goes much deeper into the controllers' history throughout the early years of NASA. Here, we seek to provide enough information such that the real-time audio experience may be fully appreciated.

It is important to note that the flight controllers in the main Mission Operations Control Room (MOCR) were far from the sole engineers and problem-solvers on hand during this or any other mission. There were the Staff Support Rooms (SSRs) in which internal teams backed up each flight controller, each on their own private team audio loop, as well as the Spacecraft Analysis (SPAN) room, in which engineers and other representatives from the various private contractors that actually designed and built the components of the spacecraft were on hand to offer data and analysis. In addition, there were stations all over the world, on sea and on land, which tracked the spacecraft and in doing so provided valuable information and analysis on top of the telemetry they received. Before the time of Apollo, much of this data was not networked back to Houston, and so flight controllers would actually have to be deployed to the various remote stations to directly perform their duties on-site.

Below, we review the controller positions you'll hear from most in the audio. For further information on the other equally important roles, please refer to one of the references linked above.

Flight Director (FLIGHT)

The Flight Director was the ultimate authority during an active mission, charged with ensuring, in order, crew survival and mission success. There were actually multiple teams of flight controllers during any mission, each of which was led by its own Flight Director. You will hear from two today: Gene Kranz and Glynn Lunney. As the center of the room, both figuratively and literally, each Flight Director defined their own style of leadership and set the tone of the room. The differences between Kranz's and Lunney's styles are immediately apparent in the loop audio presented here.

One of the tools Flight had in managing their relatively sizable team was a set of manually toggled status lights, one for each flight controller. In addition to their use during go/no go calls, Flight would often call for their use as a status indicator for various critical room-wide issues, such as shift changes and status updates.

Electrical, Environmental, and Consumables Manager (EECOM)

As the poor sap in charge of the electrical and cryogenic gas systems that got literally blown up during Apollo 13, EECOM is the flight controller from whom you will hear the most in the early stages of diagnosis. EECOM's purview included both electrical power and life support systems, as these systems were intertwined in their reliance upon the same cryogenic gases. These systems included gas storage and distribution, the fuel cells, batteries, alternators, and electrical buses, and the various life support and regulator valves that maintained a habitable atmosphere within the spacecraft. As implied by the name, monitoring and managing the consumption of the consumable gas (and therefore electrical) resources were also EECOM's charge.

During Kranz's shift and the initial incident, you will hear EECOM Sy Liebergot, who at one early point was described as staring at his telemetry readouts with a two-handed death grip on the handles of his display. Clint Burton takes over as part of Lunney's team—he oversees most of the power-down procedure of the CSM.

Guidance, Navigation, and Controls Systems Engineer (GNC)

GNC managed all of the go-there systems: the propulsion hardware, the RCS attitude thrusters, the propellant to be burned, and the navigation instruments and software, including the guidance computer. The explosion broke many things loose, jarred many valves open or shut, and knocked electrical buses offline, and so GNC makes frequent appearances in the first hour or so following the incident to try to find a combination of RCS thrusters that are trustworthy to put on the working electrical bus, and to shut down errant thrusters which were pushing the craft about or wasting power while failing to fire.

Said appearances are made by Bill Strable, who is then relieved by Jack Kamman with Lunney's Black team.

Guidance Officer (GUIDO)

The Guidance Officer was in charge of the spacecraft position and attitude at all times, and the appropriate use of the attitude adjustment and propulsion systems to ensure smooth operations. As an example, you will hear GUIDO crop up when the spacecraft nears gimbal lock, a condition which would invalidate all available understandings of spacecraft orientation until a lengthy recalibration could be performed. You'll also hear him talk about some of the various control modes of the spacecraft that translate crew input into thruster firings.

Bill Fenner and Ray Teague serve as White team GUIDO, while Gary Renick and Will Presley take over as part of Black team.

Flight Dynamics Officer (FDO)

Down in the spirited Trench of the room, FDO managed spacecraft trajectory, both present and into the future. Where GNC and CONTROL managed the propulsion and attitude control hardware and software systems of the CSM and LM, respectively, and GUIDO was in charge of their actual, immediate use, FDO worked one level above that, formulating and overseeing the navigation and maneuver plans required to deliver the spacecraft where it needed to go. FDO collaborated with a variety of people, both on and off campus, to determine and calculate the necessary orbital maneuvers required to achive mission success.

Bill Stoval is FDO for Kranz's White team, and Bill Boone and Maurice Kennedy take over at shift change.

Integrated Communications Officer (INCO)

INCO was in change of communications for both spacecraft. These included the telemetry systems, and the various omnidirectional and steerable antennas upon each craft. In addition to managing the on-board equipment to ensure quality of signal and successful data operations, INCO worked with NETWORK and PROCEDURES to coordinate appropriate related reconfigurations of the ground-air link from both ends of the connection.

INCO pipes up quite a bit in the audio to ask for antenna changes as the spacecraft attitude is somewhat out of control following the accident; INCO is also a key player and communicator in identifying and resolving the LM/S-IVB communications issues that occur midway through the Black team shift.

The White team INCO was Alan Glines, and the Black team INCOs were Gary Scott and Ed Fendell.

Telemetry, Electrical, and EVA Mobility Unity Officer (TELMU)

TELMU was effectively the EECOM of the Lunar Module, responsible for many of the respective systems aboard the LM. As the Lunar Module lifeboat plan becomes increasingly real and correspondingly pressing, TELMU has to oversee an emergency startup of the LM, working with the crew on board to safely power up the spacecraft in literal record time. Later, TELMU is a key player in determining a low-power configuration that can bring the crew safely home while maintaining navigation.

Kranz's TELMU was Bob Heselmeyer, and Lunney's TELMU was Merlin Merritt.

Control Officer (CONTROL)

Where TELMU is effectively the EECOM of the Lunar Module, CONTROL is effectively the GNC. In addition to overseeing the navigation and propulsion systems during powerup and the lunar-bound correction burn following the accident, the heavy debate had by Lunney's team on maintaining platform control on a low electricity budget hinged on the navigation systems overseen by CONTROL.

During Kranz's shift, CONTROL was Larry Strimple. He was relieved by Hal Loden for Lunney's shift.

Capsule Communicator (CAPCOM)

CAPCOM was, with exceedingly rare exception, the only person allowed to talk directly to the crew. This allowed him to ensure the consistency, coherency, and accuracy of instructions and information transiting to and from the crew, and to translate to and from terms and descriptions more-familiar to the astronauts. The latter effort was aided by a convention that CAPCOMs were drawn from the astronaut pool.

Jack Lousma serves as CAPCOM throughout all available audio here. He later flew aboard the Skylab 3 mission, and commanded one of the very first Space Shuttle missions, STS-3.

End of tape.

After six hours of continual crisis, Apollo 13 is now safely back on a trajectory towards Earth, with a stable configuration and no immediate dangers. The Command Module is completely dark, and the crew is preparing to bring Aquarius down to a minimal state. It would eventually transpire, after some on-board experimentation with different solutions, that because of the added cost of the inverter required to keep the navigation eight-ball running, it was cheaper in total to leave the whole PGNS system running in Attitude Hold mode to prevent gimbal lock rather than having the crew watch the drift manually. For thermal control, the crew were simply instructed every so often to manually move the stack around to different attitudes.

Following the PC+2 past the far side of the Moon, even Aquarius would be powered down completely apart from COMM and life support, in order to conserve power. When a final midcourse correction was required after this, the infamous manual burn dramatized in the film was performed, as power could not be spared to power up the entire computer system.

Over the next many hours and days, many more problems need to be solved: the LiOH canisters mentioned briefly by Glynn Lunney deplete, and a makeshift adapter has to be fashioned for spares from the Command Module to be used in order to prevent a buildup of carbon dioxide; extensive resource planning is done to stretch consumables far past their designed limit; the crew deals with hypothermic conditions and dangerously scant water rations while demanding tasks continue to be required; an entirely new hours-long Command Module power-up procedure must be developed, tested, and successfully read over voice to an exhausted Jack Swigert to ensure a successful re-entry, a process that by all rights should take weeks rather than days.

Hopefully, you have not only enjoyed these six hours of audio, but as well gained a new appreciation and tactile understanding of what it was like to hurl Apollo through the heavens. If you wish to delve yet further into Apollo and spaceflight, please take a look at the further reading section.

If you have feedback or questions, please don't hesitate to send me a tweet or file a GitHub issue.

Photo Credit: NASA, with scans by Kipp Teague.

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EVA
554646
CAPCOM
Okay FLIGHT, you read his pitch and yaw and his high-gain meter.
554650
FLIGHT
That's affirmative.
554651
CAPCOM
And now you want roll right to 060?
554655
FLIGHT
Might as well do that. And we'll try and get Comet Bennett, I'd still like the verification on the docking angle because that's what we'll be using for computation for alignments and everything else. Let's see if there's anything else.
554707
EECOM
FLIGHT, EECOM.
554708
FLIGHT
Go ahead, EECOM.
554709
EECOM
Okay, let's terminate the battery B charge at 55 +50.
554714
FLIGHT
Okay.
554715
EECOM
And at the same time, I'd sure like to have a cryo stir, all 4 tanks.
554720
FLIGHT
Let's wait until they get settled down a little more.
554722
EECOM
Roger.
554723
GNC
FLIGHT, GNC.
554724
FLIGHT
Go, GNC.
554725
GNC
They would still like to enable the other two quads for the maneuver.
554729
FLIGHT
Okay. When rolling to 060 you want them to enable C and D, right?
554735
GNC
Right.
554736
FLIGHT
Do you want them to disable A and B?
554738
GNC
No.
554738
FLIGHT
Okay. All four quads.
554740
GNC
They have a coupled jet maneuver -
554741
FLIGHT
Roger. Copy, CAPCOM?
554744
CAPCOM
Got it.
554745
INCO
FLIGHT, INCO.
554746
FLIGHT
Go, INCO.
554747
INCO
I'd like to confirm their configuration on their high-gain now.
554750
FLIGHT
Okay.
554751
INCO
I'd like to know what track mode they're in and what SERVO electronics they're in.
554756
FLIGHT
Okay, let's just standby 1 there. Now we'll C and D for roll to 060, terminate battery B charge.
554810
FLIGHT
Okay, the third thing we want up there, CAPCOM, is to verify their high-gain configuration. And I assume what you want from there is you want to know their tracking, position of track - BEAM WIDTH you don't need, do you? Do you want the whole works?
554825
INCO
Yeah, the whole works.
554825
FLIGHT
Okay.
554831
FLIGHT
CAPCOM, we want the configuration of the CSM high-gain.
554934
INCO
That's good.
554935
FLIGHT
Okay.
555005
FLIGHT
Good report.
555010
GNC
FLIGHT, GNC.
555011
FLIGHT
Go, GNC.
555012
GNC
Can we verify that they reenabled C-4 thruster?
555021
FLIGHT
Okay. Verify that they re- - you're showing that disabled, yes?
555024
GNC
Yes.
555025
FLIGHT
CAPCOM, we're still seeing CM C-4 thruster disabled.
555034
EECOM
FLIGHT, EECOM.
555035
FLIGHT
Go EECOM.
555035
EECOM
We've got 40 amp-hours back in battery B now.
555038
FLIGHT
Okay.
555044
CONTROL
You got it, FLIGHT.
  • Likely in response to seeing C-4 thruster enabled.
555045
FLIGHT
Okay.
555055
FLIGHT
Okay, all flight controllers. I want to go around the horn and pick up anything you need configuration-wise. TELMU -
555102
TELMU
Go ahead, FLIGHT.
FLIGHT
- you still worried about any configuration items?
555106
TELMU
Negative. The LM heater current indicates that the LM was properly closed out. They apparently have not closed the LM hatch yet.
555116
FLIGHT
Okay. So you're happy that you don't need them to verify that - what was it, Activation 2-3, those pages we were on?
555123
TELMU
That's right. It was TLC 2, and we're happy.
555125
FLIGHT
Okay.
555129
GUIDO
FLIGHT, GUIDANCE.
555131
FLIGHT
Go, GUIDANCE.
555132
GUIDO
Can we ask about the docking index again?
555135
FLIGHT
CAPCOM will get that for me.
555157
FLIGHT
Okay. Got your answer, GUIDANCE?
555159
GUIDO
Roger, FLIGHT.
555200
FLIGHT
Okay, go with it.
555233
FLIGHT
Okay. GNC, you got any configuration items here?
555237
GNC
Negative, FLIGHT.
555238
FLIGHT
CAPCOM, looks like the last item we need here is a stir on Hâ‚‚ and Oâ‚‚ at their convenience.
  • The fateful but inevitable request.
555246
CAPCOM
Okay.
555357
GUIDO
FLIGHT, GUIDANCE.
555401
FLIGHT
Go, GUIDANCE.
555402
GUIDO
We finally got a ∆H update. Do you want to just read it up to the crew or uplink it?
555410
FLIGHT
Let's see, now. Can we collapse deadbands and do all that good stuff if we uplink here?
555419
GUIDO
Uh. Yeah. That - why don't we just read it up to them?
555424
FLIGHT
If they enter it through the DSKY are they gonna do it?
555427
GUIDO
Standby 1.
555432
FLIGHT
Now, we haven't stabled out in that attitude yet, so I don't think we're gonna have any problems.
555435
GNC
FLIGHT, I don't think there's any problem, they haven't opened up deadbands yet.
555438
FLIGHT
Yeah, that's just what I'm saying. The time to do it is now, GUIDANCE.
555442
GUIDO
FLIGHT, GUIDANCE.
555443
FLIGHT
Go, GUIDANCE.
555444
GUIDO
As long as he's in P00 and don't reselect it, he can uplink it - enter it himself or we can do it easier. Doesn't matter.
555458
FLIGHT
Okay. Why don't - you gotta pass the data for the crew checklist anyway on-board, don't you?
555506
GUIDO
Right.
555506
FLIGHT
Don't you got a page update? Well, why don't we read it up to them and that'll serve both purposes.
555511
GUIDO
Alright.
555511
FLIGHT
Both have them enter it as well as why don't you tell them what page you want it in the checklist?
555515
GUIDO
Okay.
555519
TELMU
FLIGHT, TELMU.
555520
FLIGHT
Go, TELMU.
555520
TELMU
We show the LM overhead hatch is closed, and the heater current looks normal.
555524
FLIGHT
Okay.
555527
GUIDO
FLIGHT, GUIDANCE.
555528
FLIGHT
Go, GUIDANCE.
555529
GUIDO
We've had a hardware restart. I don't know what it was.
555531
FLIGHT
Okay. GNC, you want to look at it? See if you see any problems?
555538
FLIGHT
Roger. We're copying it, CAPCOM. We see a hardware restart.
555542
FLIGHT
You see an AC BUS UNDERVOLT there, GUIDANCE? Err - EECOM?
555547
EECOM
Negative, FLIGHT.
555549
FLIGHT
I believe the crew reported it.
555551
CAPCOM
We've got a MAIN B UNDERVOLT.
555552
FLIGHT
Oh, MAIN B.
555552
EECOM
Okay, FLIGHT, we've got some instrumentation funnies, let me add them up.
  • Having missed the pre-explosion pressure spike on tank 2, all EECOM has to work with now is a Christmas tree of bad data readout. So many numbers were off whack all of a sudden that EECOM assumes it has to be instrumentation. Lengthy discussion ensues on the EECOM loop.
  • Poor Sy had a "two-handed deathgrip" on his console by now.
555555
FLIGHT
Roger.
555602
EECOM
We may have had an instrumentation problem, FLIGHT.
555604
FLIGHT
Roger.
555608
INCO
FLIGHT, INCO.
555609
FLIGHT
Go, INCO.
555610
INCO
We switched to WIDE BEAM width about the time we had the problem.
  • A red herring, but a believable one if the problem were instrumentation or telemetry.
555634
FLIGHT
Okay.
555642
FLIGHT
INCO, you say you went to WIDE BEAM width there?
555645
INCO
Yes.
555650
FLIGHT
Let's see if we can correlate those times. Get the time when you went WIDE BEAM, INCO.
555656
INCO
Okay.
555703
CAPCOM
Do we have the floodlights off right now?
555706
TELMU
That's affirmative, FLIGHT.
555707
FLIGHT
Yeah, we can determine that from the LM current.
555737
FLIGHT
Roger, we copy that also.
555814
FLIGHT
EECOM, you were seeing any AC problems? Looks like -
555816
EECOM
FLIGHT, EECOM.
FLIGHT
- we have a lot of instrumentation problems here. Go ahead.
555818
EECOM
That's affirm. He's flipping out fuel cells around, FLIGHT.
  • This ended up being a problem for the flight controllers. The astronauts were doing their own problem solving and configuration changes, so every time the controllers on the ground had a recommendation for them something would get changed and they'd have to start over.
555824
FLIGHT
Well, let's get some recommendation here, Sy, if you've got any better ideas.
555833
FLIGHT
Sy, what do you want to do? Hold your own, and -
555841
FLIGHT
- Sy, have you got a SIG SENSOR type problem there, or what?
555844
EECOM
FLIGHT, EECOM.
555845
FLIGHT
Go ahead.
555845
EECOM
He's got fuel cells 1 and 3 are offline. We've got MAIN A volts, we have no MAIN B volts. Have them attempt to reconnect the fuel cells. FUEL CELL 1 to MAIN A, FUEL CELL 3 to MAIN B.
555903
FLIGHT
Okay.
555904
EECOM
Let's just try that -
FLIGHT
FUEL CELL 1 -
EECOM
- back to MAIN A, FUEL CELL 3 back to MAIN B.
FLIGHT
- MAIN A, 3 to MAIN B.
555911
EECOM
Let's see what happens.
555912
FLIGHT
Okay, now is there - do we have instrumentation problems?
555917
EECOM
Well, we've lost - it does appear we've lost AC BUS 2 VOLTAGE. MAIN B is reading - 4 volts. And that effectively takes AC 2 away from us -
555930
FLIGHT
Okay.
EECOM
- the - yeah and he reported barber poles on the -
555935
FLIGHT
Roger.
EECOM
- on the fuel cell on-board, too, FLIGHT.
555936
FLIGHT
(unintelligible) yeah.
555938
GNC
FLIGHT, GNC.
555939
EECOM
Let's see if we can get our DC back.
555940
FLIGHT
Roger. Go ahead, GNC.
555942
GNC
Verify that the Quad Delta HELIUM VALVES are open.
555947
FLIGHT
You seeing an attitude problem or you seeing some BI-levels that are giving you problems?
555951
GNC
No, it's some low pressures in the fuel and oxidizer which would be symptomatic of the HELIUM VALVE closing and firing some jets.
  • Here he means these two things both happening, not that the valve closing would cause jet firing. Helium is used as an inert gas to maintain pressure in many propellant tanks even today. If the helium isn't coming in, propellant gas exits the tank without anything re-entering to keep the pressure up.
  • Kranz notes that this was a moment of realization for him; the reported bang must have been pretty strong to have jarred shut the valve. He'd seen something similar on Apollo 9 during CSM/S-IVB separation.
560000
FLIGHT
Quad number 2 HELIUM VALVE open?
560001
GNC
Quad Delta.
560002
FLIGHT
Quad Delta - HELIUM VALVE open, right?
560006
GNC
Right.
560011
FLIGHT
CAPCOM, do you want to verify the Quad Delta HELIUM VALVE is open, please.
560017
FLIGHT
Any other problems in the RCS, Buck?
560021
CAPCOM
Okay, is that all we've come up with for them; have we got any other recommendations?
  • CAPCOM is anxious.
560026
FLIGHT
Yeah, we wanted to get FUEL CELL 1 configured to MAIN A, FUEL CELL 3 to MAIN B. Did you pass that up?
560032
EECOM
Let's attempt that, FLIGHT.
560037
FLIGHT
INCO, this seems to be an AC type problem, it may be tied into that high-gain thing you got.
560046
INCO
We went to WIDE BEAM WIDTH - FLIGHT - at 55:55:04, best we can tell.
560049
FLIGHT
Okay.
560106
EECOM
I copy, FLIGHT.
560109
EECOM
Let me commiserate on that.
560116
CAPCOM
Is there any kind of leads we can give them? Are we looking at instrumentation or have we got a real problem, or what?
  • The lack of answer here is telling. At some point here, steely-eyed missile man and NASA legend EECOM John Aaron had gotten called at home. He asked for some numbers to be read out, and while bolting out the door warned them that whatever it was, it wasn't instrumentation.
560135
EECOM
Roger. FLIGHT, EECOM.
560136
FLIGHT
Go, EECOM.
560136
EECOM
Let's reverse the configuration request -
560138
FLIGHT
Okay, but wait a minute. We've got a good MAIN A BUS, let's make sure that whatever we do doesn't screw up MAIN A. MAIN A -
560144
EECOM
FUEL CELL 2 is on MAIN A, FLIGHT -
560146
FLIGHT
Okay.
EECOM
- and I'm not going to ask to change that.
560147
FLIGHT
Okay, what do you want to do?
560149
EECOM
Let's try to put FUEL CELL 1 on MAIN B, FUEL CELL 3 on MAIN A. We'll use the other sensing circuitry.
560157
FLIGHT
FUEL CELL number 1 on MAIN B -
560201
EECOM
- FUEL CELL 3 on MAIN A.
560209
EECOM
We're not going to touch FUEL CELL 2, FLIGHT.
560212
FLIGHT
Okay, but if we got any problems in the system I want to make sure that we don't blow the voltage off MAIN A, then we're not going to be able to see anything.
560228
FLIGHT
Can we review our status here, Sy, and see what we've got from a standpoint of status. What do you think we've got in the spacecraft that's good?
560236
EECOM
MAIN BUS A is reading 25 volts.
560239
FLIGHT
Okay. MAIN A -
560240
EECOM
And that's reflected by the fact - FUEL CELL 2 is putting out 53 amps, which is just about the most it can and keep our voltage up.
560248
FLIGHT
Okay.
560249
EECOM
So that's bona fide. AC BUS 2 is 0, which is reflected by the fact that we lost MAIN B.
560255
FLIGHT
AC BUS -
560259
EECOM
Standby, FLIGHT.
560303
FLIGHT
- zero output.
560308
EECOM
FLIGHT, EECOM.
560314
FLIGHT
Go ahead, EECOM.
560315
EECOM
Okay. If we want to keep - - standby, he's changed configuration, we've got BATTERY A on MAIN A.
560327
FLIGHT
Go ahead.
560328
EECOM
That's what I was going to ask you for, to put the battery on, FLIGHT.
560330
INCO
FLIGHT, INCO.
560331
FLIGHT
Go, INCO.
560331
INCO
We need OMNI Bravo. Our high-gain won't drive without AC 2.
  • The steerable antenna needed AC BUS 2 to power its servos.
560338
FLIGHT
Okay. You want OMNI Bravo?
560339
INCO
Right.
560349
FLIGHT
You don't think we're going to be able to get HIGH BIT RATE data here, do you? On the OMNIs.
560353
INCO
We may be. We've got the 210s.
560355
FLIGHT
You've got the 210s -
560356
INCO
Right.
FLIGHT
Okay, that'll save a bit of power. CAPCOM, recommend selection of OMNI Bravo, please -
560402
INCO
It's Charlie now.
FLIGHT
Okay, Charlie.
560403
INCO
He's maneuvering.
560405
CAPCOM
OMNI Charlie?
560406
INCO
Roger.
560406
FLIGHT
That's affirmative.
560428
INCO
Okay, FLIGHT, we've got OMNI Charlie and HIGH BIT RATE.
560431
FLIGHT
Okay. You have HIGH BIT RATE now off the 210s, right? OMNI -
560434
INCO
Right.
FLIGHT
Okay.
560459
EECOM
FLIGHT, EECOM.
560459
FLIGHT
Go, EECOM.
560500
EECOM
Okay. Let's get a readout on a couple of fuel cell pressures here -
560504
FLIGHT
Okay.
EECOM
- FUEL CELL 1 Nâ‚‚ pressure. FUEL CELL 3 Oâ‚‚ pressure. We're reading 0 Nâ‚‚ pressure on FUEL CELL 1 and 13psi on FUEL CELL 3 Oâ‚‚ pressure.
  • Nitrogen was used to pressurize the electrolytes in the fuel cell through a diaphragm, as well as the reactant feed systems. Feedback loops are set up with the cryogenic oxygen to regulate the relative pressures.
560518
FLIGHT
Okay, you want FUEL CELL 1 -
560521
EECOM
Nâ‚‚ pressure.
FLIGHT
- Nâ‚‚ pressure. FUEL CELL 3, what do you want there?
560526
EECOM
Oâ‚‚ pressure.
560527
FLIGHT
Oâ‚‚ pressure. CAPCOM, let's get those as a start.
560533
GUIDO
FLIGHT, GUIDANCE.
560534
FLIGHT
Go, GUIDANCE.
560535
GUIDO
When his hardware restart he was doing a crew-defined maneuver, and that should have killed it, but we're still moving. We ought to stop it.
560545
FLIGHT
Are we using RCS now, Buck?
560558
FLIGHT
GNC, from FLIGHT.
560602
FLIGHT
GNC, from FLIGHT.
560604
GNC
GNC.
560605
FLIGHT
Did you see any problems in Quad D HELIUM VALVE? Does that look like that's cleared up?
560608
GNC
Roger, that's cleared up, FLIGHT, we're in good shape.
560610
FLIGHT
Okay. Now, are we using RCS now?
560612
GNC
That's affirmative, we're going to have to switch some thrusters to MAIN A to hold attitude here.
  • Because the thrusters required electrical power to operate and MAIN B was dead, a lot of them had to be switched around to the other bus to maintain operation.
560617
FLIGHT
Okay. How much RCS are we using?
560622
GNC
Oh, we've used - our guess 25 pounds.
560628
FLIGHT
Okay. Give me minimum fuel usage configuration that'll keep me attitude.
560632
GNC
Roger.
560633
TELMU
FLIGHT, TELMU.
560634
FLIGHT
Go, TELMU.
560635
TELMU
The LM heater current's become essentially static.
560638
FLIGHT
Roger. Let's solve one problem at a time. Come back to me later on on it.
560705
CAPCOM
We confirming those numbers?
560720
FLIGHT
Buck, I need that RCS stuff as soon as you can get it.
560723
GNC
Roger, FLIGHT. He's turned off all jets now.
560724
FLIGHT
Okay.
560726
CAPCOM
Okay, we came up with those numbers, FLIGHT.
560729
FLIGHT
Okay, Sy. Give me your next best thing to try.
560746
FLIGHT
EECOM, from FLIGHT.
560747
EECOM
FLIGHT, EECOM.
560748
FLIGHT
Go ahead.
560751
EECOM
Why don't we try - leave FUEL CELL 2 alone, and just make sure that 1 and 3 are disconnected from both buses. And make sure that there's abs - that there won't be any load on them at all. And let's see what happens to those cells.
  • n.b. this is shutting off the output electrical circuit of the fuel cells, not the fuel cells themselves, which remain on.
  • Since the fuel cell electricity was produced via a chemical reaction, reducing the electrical output load would reduce the reaction rate, which could have an impact on the problem.
560806
FLIGHT
Okay, what do you want to do? Open-circuit FUEL CELL 1 and 3?
560809
EECOM
That's affirm, flight.
560810
FLIGHT
Okay. CAPCOM, let's recommend we open-circuit FUEL CELL number 1 and number 3 and leave FUEL CELL number 2 as-is.
560821
CAPCOM
Okay, 1 and 3 open-circuit, 2 as-is. And earlier we got a report from them that 1 and 3 were reading grey but zero flow.
  • Connected to the circuit. An open circuit would yield a barber pole.
560829
FLIGHT
Yeah - CAPCOM, let's amend that. EECOM, from FLIGHT.
560832
EECOM
FLIGHT, EECOM.
560833
FLIGHT
Why don't we just open-circuit 1 and make sure we don't have any problems getting that back onto the bus -
560838
EECOM
Okay, FLIGHT.
FLIGHT
- and just watch it for a while before we make any further moves with 3.
  • FLIGHT's caution is probably well-advised here, but the last-minute change is dropped by EECOM; later he still thinks both 1 and 3 have been open-circuited.
560841
EECOM
Roger.
560841
FLIGHT
Okay, CAPCOM. Let's just open-circuit one of those right now.
560857
GNC
FLIGHT, GNC.
560905
EECOM
That's roger, FLIGHT. That's the AC problem.
560908
FLIGHT
Roger.
560916
FLIGHT
Crew thinks they're venting something.
560918
EECOM
I heard it, FLIGHT.
560927
CAPCOM
Copy that, FLIGHT?
  • Pretty much as worked-up as the room gets.
560929
FLIGHT
Roger.
560933
FLIGHT
Okay, let's everybody think of the kinds of things that we'd be venting. GNC, you got anything that looks abnormal in your system?
560939
GNC
Negative, FLIGHT.
560943
FLIGHT
How about you, EECOM? You see anything that - with the instrumentation you've got that could be venting?
560953
EECOM
That's affirm, FLIGHT.
561001
EECOM
Let me look at the system, FLIGHT, as far as the venting is concerned.
561003
FLIGHT
Okay. Let's start scanning. I assume you've called in your backup EECOMs?
561010
FLIGHT
EECOM?
561011
EECOM
FLIGHT, say again?
561012
FLIGHT
Have you called in your backup EECOMs now? See if we can get some more brain power on this thing?
561015
EECOM
We got one here.
561016
FLIGHT
Roger.
561017
INCO
FLIGHT, INCO.
561018
FLIGHT
Go, INCO.
561018
INCO
He's - he's - never mind, he's straightening up a little bit.
561021
FLIGHT
Okay.
561045
FLIGHT
Okay, now, let's everybody keep cool. We've got the LM still attached, the LM spacecraft is good, so if we need to get back home we've got a LM to do a good portion of it with. Okay? Let's make sure we don't do anything that's going to blow our CSM electrical power with the batteries, or that will cause us to lose the MAIN - the FUEL CELL number 2. We want to keep the Oâ‚‚ and that kind of stuff working, we'd like to have RCS. But we've got the Command Module system, so we're in good shape if we need to get home. Let's solve the problem, but let's not make it any worse by guessin'.
  • Note the repeated use of "if" here. The severity of the problem was not yet fully understood.
  • As noted elsewhere, FLIGHT likely meant LM here.
561146
GNC
FLIGHT, GNC.
561150
FLIGHT
Go, GNC.
561151
GNC
I have some jet configurations for you whenever you need them.
561154
FLIGHT
Okay.
561157
FLIGHT
Give them to me.
561201
GNC
Okay. Charlie 3, Charlie 4 to MAIN A. Bravo 3 and Bravo 4 to MAIN A. Charlie 1 and Charlie 2 to MAIN A -
561212
FLIGHT
Standby.
561221
GNC
Yeah; it's all of quad Charlie on MAIN A.
561224
FLIGHT
Okay.
561225
GNC
Plus Bravo 3 and Bravo 4.
561229
FLIGHT
Now, what are we going to be doing with these, GNC?
561232
GNC
That'll give us one jet in each direction on each axis.
561235
FLIGHT
Okay.
561236
GUIDO
FLIGHT, GUIDANCE.
561236
FLIGHT
Go, GUIDANCE.
561237
GUIDO
He's getting close to gimbal lock.
561239
FLIGHT
CAPCOM - okay, CAPCOM, recommend he bring up C-3, C-4, B-3, B-4, C-1, C-2 on MAIN A and advise him he's getting close to gimbal lock.
561252
FLIGHT
GUIDANCE, from FLIGHT.
561253
GUIDO
Go ahead.
561253
FLIGHT
Could we go to a coarse align on the platform here, so we don't have to use any gas if we need to? We could reorient if necessary.
561302
GUIDO
Roger. I was going to recommend a P52 in a little bit anyway -
561305
FLIGHT
Well, it's going to take a while before we get to the point we're even thinking of a P52.
561309
GUIDO
Yeah.
561312
FLIGHT
Yeah, it'll coarse align itself there, won't it?
561318
GUIDO
It'll coarse align at -
561319
FLIGHT
Roger.
GUIDO
- any time itself.
561410
FLIGHT
Okay, EECOM. I'm coming back to you.
561413
EECOM
FLIGHT -
561413
FLIGHT
Go ahead.
EECOM
- I think the best thing we can do right now is start a power down.
561419
FLIGHT
Okay -
561420
EECOM
Let's go down the emergency 1-5.
561423
FLIGHT
You want to power down, let us look at the TM and all that good stuff, and then come back up.
561429
EECOM
That's affirm.
561430
INCO
FLIGHT, INCO. OMNI Bravo.
561432
FLIGHT
You want OMNI Bravo again?
561434
INCO
Right.
561434
FLIGHT
On board. OMNI Bravo.
561442
FLIGHT
CAPCOM, recommend OMNI Bravo.
561447
FLIGHT
Okay. What - you want to go to - power down - give me the page.
561451
EECOM
Emergency 1-5, FLIGHT, we'll go down - try to get a delta of 10 amps reduction.
561513
INCO
Okay, we've got OMNI Bravo, FLIGHT.
561522
FLIGHT
EECOM, do you want to go through that again? What do you want to power down to?
561525
EECOM
I want to power down a total of 10 amps, FLIGHT.
561528
FLIGHT
A total of 10 amps.
  • You can hear someone (FLIGHT, perhaps?) whistle in amazement at this.
561529
EECOM
That's affirm.
561531
FLIGHT
Okay.
561535
FLIGHT
CAPCOM, we'd recommend emergency power down checklist 1-5, we want to power down a total - a delta of 10 amps from where we are now.
561544
GNC
FLIGHT, GNC.
561544
FLIGHT
Go, GNC.
561545
GNC
Can we afford to do a PTC first, and then we can shut off all of that stuff with no problems.
  • As FLIGHT notes later, this is not a possible request.
561551
FLIGHT
Why? You think you're going to have a thermal problem here?
561553
GNC
Well, we could have - if we stay there too long, or we -
561555
FLIGHT
Okay, we'll run into that one later, Buck -
561558
GNC
Okay.
FLIGHT
- I want to get our major problems sorted out now.
561601
CAPCOM
You want - you still want 1-5 down to 10 amps?
561603
FLIGHT
1-5 power down a delta of 10 amps, CAPCOM.
561631
FLIGHT
EECOM, from FLIGHT.
561634
EECOM
Go, FLIGHT.
561635
FLIGHT
You don't want to get fuel cell pumps off, do you?
561644
FLIGHT
Optics power is already off, I believe.
561647
EECOM
We can do that on FUEL CELL number 1, FLIGHT.
561650
FLIGHT
Okay, well let's make sure we don't blow the whole mission.
  • Kranz himself writes that he realized within fifteen minutes that an oxygen tank had exploded and therefore the "mission" referred to here was now survival, not a lunar landing. But it is not clear if the entire room was on this page quite yet.
561720
EECOM
FLIGHT, EECOM.
561721
FLIGHT
Go, EECOM.
561722
EECOM
Would you not want to consider going to PTC?
  • Echoing GUIDO's suggestion earlier. Still not possible, as FLIGHT points out later.
561726
FLIGHT
Well, why don't we get this problem here resolved, right now -
561729
EECOM
This will aid our power down, I think -
561731
FLIGHT
Pardon?
EECOM
- this should aid our power down, I'd hope - wouldn't it?
561737
FLIGHT
Well, do you expect that we're going to be in a thermal problem for the next many hours? EECOM?
561744
EECOM
Well, I don't know where to say the sun is right now, FLIGHT.
561747
GNC
Well, it's pretty close to quad A right now.
561749
EECOM
Are we - by 90 degrees?
561753
GNC
I don't know exactly where. It's between A and B, mostly on A.
  • He's likely deducing this from temperature sensors in the RCS thruster packages.
561832
FLIGHT
GNC, from FLIGHT.
561836
FLIGHT
GNC, from FLIGHT.
561840
GNC
GNC.
561841
FLIGHT
Buck, I'd prefer not making any unnecessary maneuvers now, or try to use any of the equipment's on board the spacecraft, such things as CMC, that type of stuff until we nail down what our problem is.
561855
GNC
Well, that's why I was recommending PTC because we don't need any of that stuff then; heaters or anything else.
  • The RCS system involved warming heaters to ensure everything fired as expected.
561859
FLIGHT
Yeah, but you gotta get the CMC on, and keep it online. And you need a rather precise period of time for redamping there.
561910
GNC
In the order of about 20 minutes to damp out and then spin up and then we can do without any of that.
561917
GNC
If we get a good spinup going then we're stable -
561919
FLIGHT
Okay, that might be a good idea. That would buy us some more time from a standpoint of reviewing the data. And it would get us back into the - as close to the normal flight plan as we could. How far are we out of attitude right now?
561937
GNC
He's a fair ways out right now, FLIGHT. He'd have to do another VERB 49 and fly back and then stabilize there.
562056
EECOM
FLIGHT, EECOM.
562057
FLIGHT
Go, EECOM.
562058
EECOM
Okay, I need one thing right now. He's powering down, he's down to 41 amps, total spacecraft. I'd like to get my AC 2 BUS back so I can look at Oâ‚‚ TANK 2 PRESSURE. I have no insight into that.
562112
FLIGHT
Okay.
562112
EECOM
Let's get - I guess we can put INVERTER 3 to MAIN A. AC 2.
562122
EECOM
And let's just do it temporarily -
562122
FLIGHT
Now, let me ask you a question - before you do that would you like to make sure you've got all AC load you don't need isolated from the bus?
562132
EECOM
Nah, it - let's not do that right now, FLIGHT. I think we're in good shape that way. The MAIN A is up high enough where it can handle the inverter.
562139
FLIGHT
Well, the thing that concerns me is starting - is throwing equipment - we had a problem, we don't know the cause of the problem, and -
562145
EECOM
FLIGHT, I've got a feeling we've lost two fuel cells. I hate to put it that way, but - I don't know why we've lost them. It doesn't all tag up. And it's not an instrumentation problem, the best I can tell right now.
  • The other shoe drops. 27 minutes past the accident, and the picture is becoming clearer. The situation is dire. Only one fuel cell remains, and the gas for it is leaking slowly out to space.
562159
FLIGHT
Okay, I'll tell you what. Let's discuss this for just a little bit longer there, Sy. CAPCOM, start them moving back towards a PTC attitude, let's start him going into his rate damping. I feel it's going to be a relatively long period of time to try and nail down the problem. Go ahead.
  • What Sy is saying is highly consequential. This is dramatized in the film for the sake of informing the audience. But the decision hasn't been made to irreversibly close the reactant valves and thus shut down the fuel cells yet.
562213
CAPCOM
He's asking how do we like his amperage setup right now?
562218
FLIGHT
Are you happy with his power level right now, EECOM?
562228
INCO
FLIGHT, INCO.
562229
FLIGHT
Go ahead.
562230
INCO
I'd like to - for him to secure the high-gain before he starts getting into PTC.
562254
GNC
That's affirmative, FLIGHT.
562254
FLIGHT
GNC? What's firing now? You got something firing?
562258
GNC
Well, we've seen quite a bit of thruster activity.
562301
FLIGHT
Okay, I guess this kills the PTC, too, because we're not going to get into PTC as long as we've got something venting.
562311
GNC
Roger, FLIGHT. That agrees with what we're seeing here.
562314
EECOM
FLIGHT, EECOM.
562315
FLIGHT
Go, EECOM.
562315
EECOM
I've got a little correction. Let's put INVERTER 1 on both AC buses, please.
  • Earlier he asks for INVERTER 3. Only 1 and 3 could pull power off of MAIN A, and MAIN B is dead.
562320
FLIGHT
INVERTER 1 on both AC. Why?
562322
EECOM
That's affirm, so I can get some AC BUS power back so I can have some insight into my AC BUS 2 telemetry, especially my cryos, maybe - the venting may be coming from that. And also, I think that the FUEL CELL 2 pumps are on AC 2, and this will take care of it without switching the pumps yet.
  • Presumably, he needed the pumps back on.
562344
FLIGHT
Say that again. You think your fuel cell pumps -
562347
EECOM
Yeah. FUEL CELL 2 pumps I think are on AC 2.
562350
FLIGHT
Okay, but according to the checklist, he should have powered - he should have turned those off, right? Now, he said he was down to BMAG number 2 is in WARM UP, so he's already gone through the fuel cell pump stuff.
562400
EECOM
Okay. Good enough.
562402
FLIGHT
Okay, so you want to configure INVERTER 1 on both AC buses.
562407
EECOM
That's affirm, FLIGHT.
562421
CAPCOM
FLIGHT, I didn't - I was listening to the spacecraft and I didn't pass up INVERTER 3 to MAIN A to AC 2, did you delete that?
562428
FLIGHT
No, we deleted that.
562430
CAPCOM
Alright.
562435
FLIGHT
You want to put INVERTER 1 on both AC BUSES. EECOM and CAPCOM, let's do it.
562439
CAPCOM
Okay.
562446
FLIGHT
EECOM, from FLIGHT.
562447
EECOM
FLIGHT, EECOM.
562448
FLIGHT
Monitor this bear when we switch again -
562449
EECOM
With you.
562459
FLIGHT
TELMU and CONTROL, from FLIGHT.
562502
TELMU
Go, FLIGHT.
562502
FLIGHT
Will you -
562503
CONTROL
Go, FLIGHT.
FLIGHT
- take a look at the prelaunch data and go through your systems and see if there's anything you've got that may have started venting here?
562508
CONTROL
Roger, FLIGHT.
562509
TELMU
We'll look.
562509
FLIGHT
Okay. And I want a report on that in about the next fifteen minutes. Quick look type stuff.
562514
CONTROL
Okay.
562516
FDO
FLIGHT, FDO.
562517
FLIGHT
Go, FDO.
562517
FDO
We're definitely seeing a vent in the data.
562519
FLIGHT
Okay.
562527
FLIGHT
Roger. We copy that, CAPCOM.
562536
EECOM
Fuel cell - FLIGHT, EECOM.
562538
FLIGHT
Go ahead.
562538
EECOM
FUEL CELL 2 PUMPS to AC 1.
562540
FLIGHT
You want FUEL CELL 2 PUMP to AC 1.
562543
EECOM
Affirmative.
562544
FLIGHT
CAPCOM, FUEL CELL 2 PUMP to AC 1.
562601
FLIGHT
EECOM, from FLIGHT.
562602
EECOM
FLIGHT, EECOM.
562603
FLIGHT
Have you got anybody getting a delog on this thing downstairs?
  • The beginnings of an effort to trace back the data through the accident and piece together what actually happened.
562607
FLIGHT
NETWORK, from FLIGHT.
562609
NETWORK
FLIGHT, NETWORK.
562610
FLIGHT
Bring me up another computer in the RTCC, will you?
562614
NETWORK
We got one machine on the RTCC and we got dual CPs downstairs.
562618
FLIGHT
Okay, I want another machine up in the RTCC and I want a bunch of guys capable of running delogs down there.
562623
NETWORK
Roger that.
562625
CAPCOM
FLIGHT, did you hear him say he's getting some rates? We want to know if he's firing any thrusters?
562631
FLIGHT
Roger. GNC, watch those thrusters, will you?
562634
GNC
GNC. Say again?
562635
FLIGHT
Have you got any thrusters firing?
562637
GNC
We're looking at that C-3 thruster, FLIGHT. It looks like it stays on most of the time.
562642
FLIGHT
Well, can we turn them all off and see if we've still got the rates or any build-up in rates?
562646
GNC
Well, the rates that we're seeing is opposite to the direction of that thruster, so if anything it's just trying to hold and not quite up to it.
  • In other words, the venting is pushing in the opposite direction to C-3's firing so they're fighting, but the venting is stronger and winning.
562653
FLIGHT
Okay, but -
562654
CAPCOM
He's been trying to counteract the rates with DIRECT. He's been getting a negative pitch and a negative roll.
562702
FLIGHT
Okay.
562706
CAPCOM
But he asked if we were getting some thruster firings that were not being made by him.
562711
FLIGHT
I'll tell you what, GNC can you get somebody in the back room to try to figure out what the equivalent ∆V is we're getting? So that we can see if we can backtrack to see if we can figure out what's venting.
  • An elegant physics solution, albeit one that would take some time to pull off. In space, absent any external forces and by basic three-laws Newtonian physics, locating single sources of acceleration is a simple matter of running the numbers through basic physics equations.
562729
FLIGHT
In other words, do - it would seem we could equate that to effective thrust and an axis and then deduce what's venting.
  • A vector, in other words, like you remember from grade school.
562736
GNC
Roger, we'll give that a try, FLIGHT.
  • He sounds impressed.
562737
FLIGHT
Okay. And that might be of interest to the LM guys.
  • TELMU and CONTROL.
562741
CAPCOM
He also said it was coming past window number 1.
562743
INCO
FLIGHT, INCO.
562744
FLIGHT
Roger, we got that.
562745
INCO
Need OMNI Charlie.
562746
FLIGHT
OMNI Charlie, CAPCOM.
562750
FLIGHT
EECOM, from FLIGHT. What did - okay, we've got two good AC buses. What did all that tell you, now?
562758
EECOM
It tells me that - well, just give me about 2 more minutes, FLIGHT.
562803
FLIGHT
Okay. Take your time.
562846
FLIGHT
Roger. Concur, CAPCOM.
562852
TELMU
FLIGHT, TELMU. We copy.
562855
FLIGHT
Roger.
562856
FDO
FLIGHT, FDO.
562857
FLIGHT
Go, FDO.
562857
FDO
Two machines in the RTCC.
562859
FLIGHT
Okay.
563137
GNC
FLIGHT, GNC.
563137
FLIGHT
Go, GNC.
563139
GNC
We would like to turn thruster Alpha 3 on MAIN A and see that'll help control that pitch and at the same time we can turn off Charlie 3 because -
563146
FLIGHT
Okay. Get me some real-time plotting on how we're using RCS here, will you?
563150
GNC
Roger, FLIGHT. And in the pitch axis we really don't seem to be using any. And that's why we'd like to go to Alpha and see if that changes it any.
563156
FLIGHT
Okay, now what do you want again?
563158
GNC
Thruster Alpha 3 to MAIN A.
563204
FLIGHT
Alpha 3 to MAIN A.
563208
FLIGHT
CAPCOM, do you want to pass that up to the crew, please?
563216
FLIGHT
Give me a gross amount of RCS propellant consumed so far, GNC.
563223
GNC
Roger, FLIGHT. It'll take 30 seconds.
563225
FLIGHT
Okay.
563230
GNC
That's affirmative, FLIGHT. We're still below the limits.
563233
EECOM
Flight, EECOM.
563234
FLIGHT
Go, EECOM.
563236
EECOM
We've really got to get that battery off the line and power down some more. And we've got to get some MAIN B power back so we can build our pressure back up in Oâ‚‚ TANK 1. It's down to 318psi.
  • Nominal Oâ‚‚ pressure is around 900psi. Normally, an automated pressure sensing switch would activate a heater as the tank depleted to heat the Oâ‚‚ and keep the pressure around that number. 100psi is a bit of a redline mark, at which point even at minimal load only about 2 hours of useful power could be expected.
563250
FLIGHT
BATTERY -
EECOM
With MAIN B down, we have no heaters in Oâ‚‚ tanks.
  • Heaters could be used to increase the pressure even with less gas (good old PV=nRT). But EECOM thinks they are on the dead DC MAIN B bus.
563255
FLIGHT
Okay, what do you want to power down?
563257
EECOM
Well, where'd he say he got down to? BMAG 2 OFF? Not inclusive?
563300
FLIGHT
That's affirmative. BMAG 2 is in WARM UP.
563304
EECOM
I think we'll go ahead and turn that down - we still have the LM with us, right?
563309
FLIGHT
That's affirmative.
563309
EECOM
So - if we shut down the SCS we ought to be a little better off, perhaps. I think we ought to press on and go down through BMAG 2 OFF, and get those lights minimum.
563321
FLIGHT
Okay. How much you want to power down? Another 10 amps?
563324
EECOM
Let's get the BMAG off and get the lights down to a minimum. Let's go down two more steps.
563328
FLIGHT
Okay. CAPCOM, we want to power down a little bit more. Want to get the BMAG off and the lights minimum there.
563355
FLIGHT
Okay, Sy. Now, how long do you want to leave this battery online?
563401
EECOM
I want to try and get it off as quick as I can -
563403
FLIGHT
Okay.
EECOM
- but I need to get powered down.
  • The spacecraft is currently drawing too much power for the one healthy fuel cell to supply, so the battery is currently required.
563405
EECOM
The crew did report they removed FUEL CELL 3 - they open-circuited it also, didn't they?
  • Here's that last-minute change FLIGHT requested earlier that EECOM missed.
563411
FLIGHT
I don't believe so.
563412
EECOM
FUEL CELL 1 and FUEL CELL 3 should be open-circuited.
563415
CAPCOM
We just had our last call for FUEL CELL 1 open-circuit, and we left FUEL CELL 3 as it was.
563421
EECOM
Let's take this open-circuit, FUEL CELL 3.
563422
FLIGHT
Open-circuit FUEL CELL 3.
563424
EECOM
Get it off the bus.
563427
GNC
FLIGHT, GNC.
563430
FLIGHT
Calling, FLIGHT. Say again?
563432
GNC
This is GNC, FLIGHT.
563433
FLIGHT
Go ahead.
563434
GNC
Yeah, we've used a total of about 70 pounds RCS. We'd like to change the jet configurations, see if that'll help us out any.
563444
FLIGHT
Okay, what do you want to try now?
563445
GNC
They would like to turn the Bravo jets all to be OFF, and all Delta to MAIN A.
563453
FLIGHT
Turn all Bravo OFF, and Delta to MAIN A, right?
563457
GNC
Roger. That will verify that it isn't a Bravo thruster that's causing the problem with attitudes.
563502
FLIGHT
Okay. CAPCOM, we'd like to turn all Bravo jets OFF and all Delta jets to MAIN A.
563512
CAPCOM
Roger.
563514
EECOM
FLIGHT, EECOM.
563515
FLIGHT
Go, EECOM.
563516
EECOM
Let's take BATTERY A off the MAIN.
563518
FLIGHT
We can support the -
563520
EECOM
That's affirm.
FLIGHT
- MAIN now on the one fuel cell even with the cryo Oâ‚‚ going down?
563524
EECOM
That's affirm, FLIGHT.
563526
FLIGHT
Okay. What's your worry level on cryo Oâ‚‚?
563531
EECOM
Say again, FLIGHT?
563532
FLIGHT
Okay. You want to -
563533
EECOM
I want to save the battery, FLIGHT.
563535
FLIGHT
Okay. Let's see, what battery have we got online, Sy?
563539
EECOM
Say again?
563540
FLIGHT
What battery have we got online?
563541
EECOM
BATTERY Alpha, FLIGHT.
563542
FLIGHT
BATTERY A, okay.
563543
EECOM
And next step, of course, we'll then think - we've got to worry about getting some power on MAIN B to get the pressure back up in Oâ‚‚ TANK 1.
563549
FLIGHT
Roger. Turn BATTERY A OFF, CAPCOM.
563614
EECOM
FLIGHT, EECOM.
563614
FLIGHT
Go, EECOM.
563615
EECOM
Let's have them isolate the surge tank also, and save it. We'll use the cryo as much as we can.
  • The surge tank provided additional Oâ‚‚, and was located in the Command Module, so it stayed with the crew for the whole flight.
563621
FLIGHT
Say that again?
563623
EECOM
Let's isolate the surge tanks -
563624
FLIGHT
Why that?
EECOM
- in the Command Module.
563626
FLIGHT
I don't understand that, Sy.
563627
EECOM
I don't want to - I want to use the cryo as much as possible.
563630
FLIGHT
But that would seem to be the opposite, if you want to keep the fuel cell going.
563634
EECOM
The fuel cells are fed off the tanks in the Service Module, FLIGHT. The surge tank is in the Command Module. We want to save the surge tank which we need for re-entry.
  • You can find a detailed diagram of the Oâ‚‚ system, including the Surge Tank, here.
563645
FLIGHT
Okay, I'm with you. I'm with you.
563647
EECOM
Roger.
563648
FLIGHT
CAPCOM, let's also isolate the surge tank.
563656
CAPCOM
Okay, you want to isolate the surge tank.
563658
FLIGHT
Yeah.
563659
CAPCOM
Oâ‚‚ surge tank, right?
563700
FLIGHT
Yeah. What we're really doing is securing our entry systems right now.
563727
FLIGHT
Yeah, we're trying to figure out some way to get power on BUS B.
  • Recall that the tank heaters, which are needed to raise the pressure, are thought to be on BUS B, which is currently dead.
563757
FLIGHT
EECOM, from FLIGHT.
563808
FLIGHT
EECOM, from FLIGHT.
563809
EECOM
FLIGHT, EECOM.
563810
FLIGHT
Would you consider putting a battery on BUS B long enough to get the pressure up?
563814
EECOM
Well, I'm trying - I want to determine whether or not the - the 5 amps is going to hurt us any. That's going to be on MAIN A, incidentally. I made a mistake. Oâ‚‚ TANK 1 HEATERS are on MAIN A.
  • Good news, since MAIN B appears to be shot.
563826
FLIGHT
Well, we've got MAIN A with us, haven't we?
563843
EECOM
FLIGHT, EECOM.
563844
FLIGHT
Go, EECOM.
563845
EECOM
Okay. Since Oâ‚‚ TANK 1 HEATERS are on MAIN A, and we've got them off now, we'll be able to stand the 5 amps temporarily for manual pressurization. Let's have them turn the heaters on manually in Oâ‚‚ TANK 1.
  • As noted previously, the heaters are normally controlled automatically off a pressure sensor. That automated switching highlights the simplicity of the spacecraft's systems; no computers needed to monitor and react to the sensor: it just plugged right into the activation circuit.
563901
FLIGHT
Oâ‚‚ -
563901
EECOM
And we'll watch the pressure.
FLIGHT
- TANK 1.
563912
EECOM
That's CRYOGENIC Oâ‚‚ HEATER 1, FLIGHT.
563916
GNC
FLIGHT, we copy that. No problem.
563917
FLIGHT
No problem, CAPCOM.
563919
FLIGHT
CAPCOM, we want to get CRYO Oâ‚‚ TANK number 1 HEATER ON.
563942
FLIGHT
You can stand the 5 amps on MAIN A?
563945
EECOM
That's affirm. We think so, FLIGHT.
564005
FLIGHT
Did you see your 5 amp increase in current there, EECOM?
564011
EECOM
That's affirm, FLIGHT.
564012
FLIGHT
Okay.
564012
EECOM
26.7 volts, looks good -
564014
FLIGHT
Okay.
EECOM
- we'll watch the pressure.
564016
EECOM
FLIGHT, to be consistent we ought to isolate the REPRESS package also.
  • The repressurization package, like the Oâ‚‚ surge tank, was a reserve of pressurized oxygen gas in the Command Module.
564022
FLIGHT
Okay, you want to isolate REPRESS pack.
564038
FLIGHT
AFD, from FLIGHT.
564040
AFD
Go ahead, FLIGHT.
564041
FLIGHT
Get one of your guys full-time in the back room keeping track of the spacecraft configuration as we pass it up to the crew. You might use Larry. Why don't you stay on, get Larry in the back room to keep track of configuration stuff we give to the crew?
564053
AFD
Okay, FLIGHT.
564054
FLIGHT
Okay?
564055
AFD
And we've got the voice recorder and we're starting to transcribe that.
564059
FLIGHT
Okay, now has anybody started the delog of the initial problem? You've got a delog going? Have you got people that are going to be in a position to evaluate it?
564110
FLIGHT
Okay.
564119
FLIGHT
TELMU and CONTROL, from FLIGHT.
564123
CONTROL
Go, FLIGHT.
564124
FLIGHT
Roger. I want LM manning around the clock.
564126
CONTROL
Roger.
564128
EECOM
FLIGHT, EECOM.
564129
FLIGHT
Go ahead, EECOM.
564130
EECOM
I want the fans on in Oâ‚‚ tank 1, we're not seeing a pressure increase. We can stand it.
564137
FLIGHT
You can stand it?
564138
EECOM
That's affirm.
564139
FLIGHT
Fans on in TANK 1, right?
564142
EECOM
Affirmative, FLIGHT.
564144
FLIGHT
CAPCOM, do you want to bring the fans on in TANK 1?
564146
EECOM
It's just 1 amp, FLIGHT.
564147
FLIGHT
Okay.
564149
EECOM
Okay, he's got an MC&W for - varied reasons.
564217
GNC
FLIGHT, GNC.
564220
FLIGHT
Go ahead, GNC.
564221
GNC
It looks like the vehicle has stabilized considerably over the last few minutes.
564226
FLIGHT
Okay. That could mean one of two things. Either whatever was venting has stopped venting, it's empty; or do you feel it could also be associated with the thruster Quad Bravo we just isolated?
564239
GNC
It's possible, FLIGHT. We really don't know yet, though.
564242
FLIGHT
Okay. Are we essentially in a - can you figure out what orientation we are from a standpoint of thermal control? Assume - what's our rate right now?
  • He's referring to the heat and shadow of the Sun.
564252
GNC
Right now he has a -0.10 of a degree in pitch. And yaw and roll are very close to 0.
564259
FLIGHT
Okay.
564300
EECOM
FLIGHT, EECOM.
564301
FLIGHT
Go ahead, EECOM.
564301
EECOM
The pressure in Oâ‚‚ TANK 1 is all the way down to 297, we'd better think about getting in the LM, or using the LM systems. I'm going to have to power way down; I don't know if I'm going to be able to save the Oâ‚‚ for the third fuel cell - for FUEL CELL 2, rather.
  • PSI. At 56:32:37 it was reported at 312psi.
564317
FLIGHT
The heaters aren't working, now let's start thinking circuit breakers. You got any circuit breakers you want to check, there?
  • In other words, FLIGHT is wondering if the heater circuit breaker popped, so despite flipping the switch on, the heaters weren't actually running.
564325
EECOM
We saw the current, FLIGHT.
  • EECOM doesn't think the circuit breaker theory is likely, since he saw the load on MAIN A increase by the expected amount for a heater to be running.
564326
FLIGHT
You saw the current - okay, look -
564329
EECOM
Let's check it anyway, FLIGHT, you're right.
  • But that could be a coincidence or something else could be wrong, so he comes around.
564331
FLIGHT
It looks like it's cycling up a PCM count from 297 to 302. Give me some circuit breakers to check.
  • The telemetry refreshed and the pressure increased - by a hair.
564337
EECOM
Okay, panel 226. CRYOGENIC Oâ‚‚ HEATER 1, MAIN A circuit breaker.
564346
FLIGHT
I'm sorry, I didn't catch you there. CRYO Oâ‚‚ TANK 1? Panel 226?
564351
EECOM
CYRO Oâ‚‚ HEATER 1, MAIN A, panel 226.
564354
FLIGHT
Roger.
564356
EECOM
Also, FLIGHT, let's check the FAN MOTOR circuit breakers TANK 1, on panel 226 also.
564405
FLIGHT
FAN MOTOR.
564407
EECOM
CRYO FAN MOTORS TANK 1. There are three circuit breakers - three phase.
  • Three-phase alternating current. Motors are easier built on three-phase AC. Unlike the two-phase AC your house gets, three-phase AC works with three wires.
564415
FLIGHT
Get that, CAPCOM?
564418
CAPCOM
I've got the 226 CRYO Oâ‚‚ HEATER 1 MAIN A, and CRYO FAN MOTORS TANK 1, three of them on -
564425
FLIGHT
That's right. All three phases.
564429
FLIGHT
EECOM, I don't think we're going to come to any solution here until we get back to the initial set of conditions, so I hope you got a set of guys looking at the delog pretty soon.
564447
FLIGHT
TELMU, from FLIGHT.
564449
TELMU
Go ahead, FLIGHT.
564450
FLIGHT
I want you to get some guys figuring out minimum power in the LM to sustain life.
  • The first mention of this critical problem and need on the loop, but it's nearly certain that the back rooms were working on this already.
564455
TELMU
Roger.
564515
CAPCOM
We got the circuit breakers. All in, FLIGHT.
  • The circuit breakers popped out when broken and pushed in when the circuit was closed.
564520
FLIGHT
Roger. Copy, all circuit breakers in.
564612
EECOM
FLIGHT, EECOM.
564613
FLIGHT
Go ahead, EECOM.
564614
EECOM
Don't we have both BMAGs OFF?
564623
FLIGHT
CAPCOM, would you verify that both BMAGs are OFF, please?
564638
FLIGHT
You want to bring it off, right EECOM?
564641
EECOM
Affirmative, FLIGHT.
564642
FLIGHT
CAPCOM, let's get it off.
564730
FLIGHT
CAPCOM, from FLIGHT.
564732
CAPCOM
Go, FLIGHT.
564733
FLIGHT
Will you get a cockpit panel 1, 2 layout and have the crew - just get the thing and have the crew read across all instruments, all gauges, and write down exactly what they read in those things?
  • Panel 3 contained fuel cell readings, which were already being closely monitored, and propellant readings for the SPS, which FLIGHT did not want to use. So there was no need for a survey.
564745
CAPCOM
Okay. You want a survey of panels 1 and 2 on gauges?
564751
FLIGHT
Yeah.
564752
CAPCOM
Okay. And talkbacks, huh?
564754
FLIGHT
That's affirmative. Figure out some code that you can use and - I think that's something we should have gotten started a while ago.
564808
FDO
FLIGHT, FDO.
564819
FLIGHT
See that juice is still going down there, EECOM. You got any more suggestions?
564826
EECOM
FLIGHT, EECOM.
564827
FLIGHT
Any more suggestions in trying to pump up Oâ‚‚ TANK 1 pressure?
564830
EECOM
No. FLIGHT, we're gonna hit 100psi in 1 hour and 54 minutes. That's the end, right there.
564845
FLIGHT
Okay, 100psi -
564848
EECOM
Less than 2 hours, now.
565055
FLIGHT
FDO, from FLIGHT.
565056
FDO
Go ahead, FLIGHT.
565056
FLIGHT
Whatever planning you do, I want to do assuming that we're going around the Moon and we're using the LM for performing maneuvers, because in the present configuration, unless we get a heckuva lot smarter I think we're wasting our time planning and using the SPS.
565111
FDO
Okay, FLIGHT.
565112
FLIGHT
So I think all of our return-to-Earth type planning should be assuming the use of the LM DPS and/or RCS. And I think third priority down the line should be CSM RCS.
565125
FDO
Okay, and I'm assuming that you want fast-as-possible return.
565131
FLIGHT
Yeah, I think that's the case.
565132
FDO
Okay. We'll work on it from that sideline, FLIGHT -
565135
FLIGHT
Okay.
FDO
Should be no problem.
565136
GUIDO
I copy that, FLIGHT.
565144
EECOM
FLIGHT, EECOM.
565146
FLIGHT
Go ahead, EECOM.
565147
EECOM
Okay, listen. There is a possibility that we blew a Oâ‚‚ line in one of the fuel cells, and it's effectively manifolded there, of course. Now, I'm - I want to shut off one of the reactant valves to one of the fuel cells. And that would be FUEL CELL 3, since its Oâ‚‚ pressure is gone. Now, FUEL CELL 1's Oâ‚‚ pressure is trying to stay up there, at 45psi. Maybe the problem is in FUEL CELL 3.
  • In other words, both tanks run into this line.
565223
FLIGHT
That sounds like a good assumption, right there.
565225
EECOM
Yeah. FUEL CELL 3 is lost anyways, for us.
565227
GNC
FLIGHT, GNC.
565228
FLIGHT
Go ahead, GNC.
565229
GNC
Turn Charlie 1 thruster OFF.
565232
FLIGHT
You want to turn Charlie 1 OFF? Why?
565235
GNC
Well, looks like we're getting a lot of firing out for no reason.
565240
FLIGHT
Okay, CAPCOM, recommend THRUSTER C-1 to OFF.
565254
CAPCOM
Say again, FLIGHT?
565255
FLIGHT
THRUSTER C-1 to OFF.
565258
CAPCOM
C-1 and -2 OFF.
565300
FLIGHT
No. C-1. OFF. I added a word in there. Turn THRUSTER C-1 OFF.
565323
FLIGHT
EECOM, from FLIGHT.
565324
EECOM
FLIGHT, EECOM.
565325
FLIGHT
Why don't you show me where you think that problem is?
565327
EECOM
Okay. Clint's coming up.
565515
EECOM
FLIGHT, EECOM.
565522
FLIGHT
Go ahead, EECOM.
  • This is actually Glynn Lunney responding, who was preparing for his shift. He spent some time before his team came on circulating the consoles and issuing a single critical question to each that had to be answered in the following half hour.
565523
EECOM
We need to get the - make sure the inline heaters for FUEL CELLS 1 and 3 are OFF.
565549
FLIGHT
EECOM, from FLIGHT. You want to shut off both reactant valves to FUEL CELL number 3?
565553
EECOM
It's dead anyway, FLIGHT.
565555
FLIGHT
Okay.
565555
EECOM
And the inline heaters OFF in FUEL CELLS 1 and 3, please.
565559
FLIGHT
What we're proposing here - supposing here, CAPCOM, is we may have a - had some problem in FUEL CELL number 3 since that's the one that's reading no Oâ‚‚ right now. And we may be losing our Oâ‚‚ through FUEL CELL number 3, the Oâ‚‚ manifold - inasmuch as they're manifolded together commonly. Looks like the Oâ‚‚ in FUEL CELL 1 and 2 seem to be trying to stay up there. And FUEL CELL 3 looks like it's the oddball here.
565642
FLIGHT
CAPCOM, let's close the REACTANT VALVE to FUEL CELL number 3.
565648
CAPCOM
Okay, close REACTANT VALVE to FUEL CELL number 3.
565652
CAPCOM
And you're saying that 1 and 2 look okay?
565656
FLIGHT
Well, what it looks like - looks like the pressure's trying to stay up there and this is the best guess we've got right now because we've got to stop this Oâ‚‚ flow.
565703
CAPCOM
Okay.
565712
GNC
FLIGHT, GNC.
565713
FLIGHT
GO, GNC.
565714
GNC
Some more jet reconfigurations to see if we can hold the attitude.
565717
FLIGHT
Okay.
565718
GNC
We'd like to turn Charlie 2 OFF -
565720
FLIGHT
Wait, why are we interested in holding attitude? If we're not venting why not drift for a while? That would probably be better from a standpoint of thermal control anyway, wouldn't it?
565727
GNC
I'd think we'd like to get into a controlled drift rather than just some random thing, FLIGHT.
565733
FLIGHT
Standby.
565755
FLIGHT
Do you want them to go through that whole smash for fuel cell shutdown, Sy? I assume you do - heaters and all?
565800
FLIGHT
EECOM?
565802
EECOM
That's affirm, FLIGHT. He's gone through much of it already, got the pumps off.
565805
FLIGHT
Okay. You want them to go through the whole fuel cell shutdown. Heaters and all.
565808
EECOM
Roger. Heaters, reactant valves, and the pumps of course he's already got.
565812
FLIGHT
Okay. Have them go ahead, CAPCOM.
565814
EECOM
And get the inline heaters OFF on FUEL CELL 1 also, FLIGHT.
565818
FLIGHT
Inline heaters OFF on FUEL CELL 1.
565821
EECOM
Roger, it'll cut the current requirement down that way.
565855
CAPCOM
Their COMM holding up? Sounds like he's going out.
565858
FLIGHT
How you doing there, INCO? From a standpoint of OMNI-switching?
565901
INCO
We might be a little better on Bravo.
565903
FLIGHT
Okay. Can you figure me out some way to keep communications and yet cut down a bit on the load? You might talk to EECOM on it.
565911
INCO
Okay. We can turn the tape recorder OFF.
565913
FLIGHT
EECOM, from FLIGHT.
565915
EECOM
FLIGHT, EECOM.
565915
FLIGHT
You don't need the tape recorder, do you?
565916
EECOM
Heck, no. Get it off.
565917
FLIGHT
Let's get it off.
565920
INCO
It may be already off, but that's one thing we don't need.
565923
EECOM
Let's go down the list as much of that INCO stuff as we can get, FLIGHT. I think that's about the one biggie right there.
565930
INCO
I think that's about the only thing we can give up. We turn the POWER AMPL OFF, we won't get HIGH BIT RATE.
565934
FLIGHT
CAPCOM, from FLIGHT.
565936
CAPCOM
Go.
565936
FLIGHT
Let's also verify tape recorders OFF, please.
565939
CAPCOM
Okay, I think we -
565941
FLIGHT
I don't think we got down that far on the list, did we? We went through the BMAGs and that was lights - BMAGs and lights, and I think we stopped right there.
565949
CAPCOM
Yeah.
565949
EECOM
Yeah, that's affirm, FLIGHT. Tape record - we'll skip a step and go tape recorder OFF.
570011
RECOVERY
AFD, meet RECOVERY. RECOVERY loop.
570018
FLIGHT
What was that, CAPCOM?
570021
GUIDO
We copy, FLIGHT.
570023
FLIGHT
What was that, GUIDANCE?
570024
GUIDO
He had an 06 18 he couldn't get rid of; he's gotten rid of it now.
570103
FDO
FLIGHT, FDO.
570117
CAPCOM
Okay, FLIGHT. I had them reading off a lot of gauge readings, and we got over to FUEL CELL 3. And I hope your people were copying all this down.
570126
FLIGHT
Did you get some kind of master? We got it on tape, I'm sure we can get it off the tape.
570132
CAPCOM
Alright. That's affirm. I'd say I have 95% of the ones he read.
570135
FLIGHT
Okay.
570217
FDO
FLIGHT, FDO.
570218
FLIGHT
Go, FDO.
570219
FDO
When the systems men can stand it, I need two minutes for a checkpoint to save all this data.
570225
FLIGHT
I don't see why we couldn't - EECOM, GNC, can you stand a checkpoint right now?
570235
EECOM
It only takes a minute, I guess I'll have to if we need it, FLIGHT.
570237
GNC
Go ahead, FLIGHT.
570238
FLIGHT
Yeah, I think it'd be good to get a checkpoint. Go ahead.
570240
FLIGHT
EECOM, have you deduced anything - have you seen your REACTANT VALVES go off? You seen flow cease?
570250
EECOM
Can't tell, FLIGHT.
570251
FLIGHT
Yeah.
570251
EECOM
They were open-circuited, and the pressure - still appears to be going down.
570258
FLIGHT
Yeah.
570326
FDO
Negative, FLIGHT.
570336
EECOM
FLIGHT, EECOM.
570337
FLIGHT
Go, EECOM.
570338
EECOM
We'd better confirm that the FUEL CELL 3 REACTANT VALVE circuit breaker on panel 226 was closed when he shut those.
570346
FLIGHT
FUEL CELL 3 REACTANT circuit breaker on what panel?
570350
EECOM
226.
570353
EECOM
They're normally open.
  • To avoid accidental shutoff of the reactant valves, the electrically activated shutoff valves were normally open-circuited and had to be closed in order for the shutoff switch to actually do anything.
570357
FLIGHT
Okay, good idea.
570359
CAPCOM
You want them - close the circuit breaker -
570401
FLIGHT
Yeah.
CAPCOM
- on the valve, and then -
570402
FLIGHT
Yeah.
570404
EECOM
Yeah, FLIGHT; he should have gotten a barber pole on that.
570416
FLIGHT
Yeah, wouldn't he get a barber pole when he turned the reactants off? EECOM?
570422
EECOM
Affirm, FLIGHT.
570423
FLIGHT
Even with the circuit breaker open?
570425
EECOM
No -
570425
FLIGHT
No. Okay, so he ought to know that. We can just verify that he got a -
  • The rest of the sentence here would have been "barber pole."
570434
FDO
Okay, FLIGHT. We have our checkpoint.
570436
FLIGHT
Okay. All flight controllers, I'd suggest you start handing over, because I think a fresh team's probably going to be thinking clearer. I think the rest of us can continue working in some other function in support of the new team coming on.
570448
GNC
Go on thruster A-4, FLIGHT.
570450
FLIGHT
Okay. Go on thruster A-4, CAPCOM.
570451
INCO
OMNI Charlie, FLIGHT.
570452
FLIGHT
Roger. And OMNI Charlie.
570500
CAPCOM
FLIGHT, he wants to bring on A-4, he hasn't got any way to stop the pitch rate in DIRECT or AUTO.
570506
FLIGHT
Go.
570512
GNC
He has it on, FLIGHT.
570531
CAPCOM
I never got a call for OMNI Charlie, you want it?
570534
INCO
Yes.
570601
EECOM
Copy.
570612
FLIGHT
Okay. All flight controllers, I'm handing over to Glynn. I assume the majority of all the team guys are pretty much briefed and up to speed as best we can. Now what I'd suggest is the white team do two things: they go over the delogs - okay - let me go back over this again. We're handing over to Glynn. I'd suggest the white team goes back and starts going through the delog of the data. In other words, let's see if we can go back to the initial conditions and work on that problem to see if we can find out what happened and we may find some better clues as to what to do and let the fresh guys come on and try to figure out where do we go from here.
  • Kranz's team was the white team. Glynn headed up black team.
570651
FLIGHT
And the delog is in way now. Roger.
570712
FLIGHT
Okay, EECOM. Tell me about the latch. Do you think you've got the reactants latched?
  • FLIGHT is following up on the possibility that the reactant valve didn't close. There was, in addition to the breaker, a latch that could wedge it open to prevent it from closing in case of heavy vibration, as could happen during a burn.
570719
EECOM
FLIGHT, EECOM.
570719
FLIGHT
Go.
570720
EECOM
The crew reported he got barber pole whenever he threw the reactant switch, so that implies that he did all the right things and he really got it shut off. And it looks like that didn't help us any - the pressure's not improving any.
570735
FLIGHT
Okay, now the next question is: are you willing to do that on FUEL CELL number 1?
570740
EECOM
That's the question we're pondering, FLIGHT. We've got to come up with an answer on that one. Soon.
570746
FLIGHT
FUEL CELL 2 is working okay.
570748
EECOM
That's affirmative.
570749
FLIGHT
Unless we do something to get that oxygen, it's not going to do us any good to save fuel cells.
  • In other words, there's no reason to be reluctant to shut off another fuel cell if there won't be any oxygen to feed into the working one anyway. You can already see how much more Lunney opines on debates.
570754
EECOM
That's affirmative.
570755
FLIGHT
Okay - okay. GNC, FLIGHT.
570800
GNC
GNC.
570800
FLIGHT
You stabilized now? - standby.
570805
FLIGHT
Here comes configuration, I think it's yours.
570833
FLIGHT
I didn't copy all those; did you, GNC?
570835
GNC
Roger, FLIGHT. We concur.
570837
FLIGHT
Is that good? How are the rates?
570840
CAPCOM
You copy those, GNC?
570840
GNC
It's holding down around a tenth of a degree per second, FLIGHT. Oscillating, he's in ACCEL CMD, so -
570848
FLIGHT
ACCEL CMD?
570849
GNC
Right.
570851
FLIGHT
Alright.
570855
CAPCOM
FLIGHT, did you copy all those thrusters?
570857
FLIGHT
Go ahead. Who's calling?
570900
CAPCOM
CAPCOM. Did you copy all those -
570901
FLIGHT
I didn't copy them all, Jack. GNC, did you copy them all?
570904
GNC
That's affirmative, FLIGHT.
570905
FLIGHT
Do you like that configuration for right now?
570907
GNC
Yes.
570908
FLIGHT
As best you can tell - best you can tell, the rates are okay. And he's flying ACCEL CMD.
570917
GNC
Roger, FLIGHT.
570918
FLIGHT
No rate damping, then, right?
570920
GNC
Roger.
570922
FLIGHT
Are both BMAG packages off?
570925
GNC
Yes, they are.
570927
FLIGHT
Okay.
570944
FLIGHT
Standby. EECOM, you need anything?
570949
EECOM
Roger, FLIGHT. We'll take those.
570952
CAPCOM
We want those?
570953
EECOM
Roger.
570955
FLIGHT
What do you want?
570957
EECOM
Get him to go through the meters -
570958
FLIGHT
Okay.
EECOM
- on FUEL CELL 1 and 3.
571000
FLIGHT
Okay. Just FUEL CELL 1 and 3, Jack.
571123
FLIGHT
EECOM, I don't like the way that Oâ‚‚ pressure's going down. If you want to do something about these other reactant valves, let's make up our mind.
571129
EECOM
Okay.
571130
FLIGHT
Don't you think?
571131
EECOM
Let me get that for you in a minute, FLIGHT. Let's standby on these readouts.
571134
FLIGHT
Yeah, okay. Anybody can copy the readouts. Be sure you're discussing these reactants.
571152
CAPCOM
Hey, FLIGHT. CAPCOM. Long time ago I heard someone mention something about closing the REPRESS package and then we never made a decision on that. Do you want to do that, too?
571201
FLIGHT
EECOM? - he's busy.
571204
EECOM
Go, FLIGHT.
571205
FLIGHT
Do you want to close out the REPRESS pack? I think that came on for them before.
571209
EECOM
We indicated earlier that we'd like to get it closed off -
571212
FLIGHT
Yes, Jack.
571221
EECOM
FLIGHT, EECOM.
571222
FLIGHT
Go ahead.
571223
EECOM
Okay, on the reactants for FUEL CELL 1. Seems to me we have no choice but to go ahead and do it. The pressure continues to drop. We're not going to have anything left soon anyway. So, looks like the next best thing to try is to go ahead and turn the reactants OFF on FUEL CELL 1.
571241
FLIGHT
Yeah. What is this pounds on your display, Clint?
571245
EECOM
On Oâ‚‚?
571246
FLIGHT
Yup.
571247
EECOM
That's - that's invalid.
571250
FLIGHT
Okay.
571255
EECOM
And of course, you'll want to make sure that his circuit breaker is closed for FUEL CELL 1 when he starts to close the reactant valves.
571302
FLIGHT
Which circuit breaker is that? The one on 226?
571304
EECOM
Roger.
571308
FLIGHT
That's FUEL CELL number 1.
571310
EECOM
That's right, FUEL CELL reactants number 1.
571312
FLIGHT
Alright.
571314
FLIGHT
Is he done with that readout yet?
571318
EECOM
I didn't copy the last part of it there, FLIGHT -
571330
FLIGHT
EECOM, FLIGHT.
571332
EECOM
Go, FLIGHT.
571332
FLIGHT
Is there any chance that I'm just looking at a bad pressure reading here? I'm going to shut off the second fuel cell now, is there any data you can correlate that says that yeah, that pressure is going down?
571343
EECOM
On the Oâ‚‚ tank?
571344
FLIGHT
Yes.
571349
FLIGHT
You understand my question?
571350
EECOM
I understand your question. The temperatures are also dropping. Let me get a verification on that - standby just a minute.
  • The ideal gas law PV=nRT can help verify the two readings against each other.
571358
FLIGHT
Alright.
571413
FLIGHT
Yeah, we copy that. Tell them we're debating shutting off the reactants on 1.
571417
EECOM
FLIGHT, EECOM.
571417
FLIGHT
Go ahead.
571418
EECOM
The temperature is the only thing we have.
571419
FLIGHT
And does it correlate?
571421
EECOM
Pretty closely.
571422
FLIGHT
You're saying that I'm looking at a valid pressure in that tank, and it's still going down.
571426
EECOM
That's the way it looks, FLIGHT.
571427
FLIGHT
Therefore?
571428
EECOM
Therefore we need to go to FUEL CELL 1 and turn off the reactants.
571432
FLIGHT
CAPCOM, FUEL CELL 1 reactants. Circuit breaker and a switch.
571436
CAPCOM
Okay - you want them to go through the fuel cell shutdown procedure on 1?
571440
FLIGHT
EECOM?
571441
EECOM
Say again, FLIGHT?
571441
FLIGHT
Do you want them to go through the fuel cell shutdown procedure on 1?
571445
EECOM
That's affirmative.
571446
FLIGHT
Yes, Jack.
571448
CAPCOM
Because -
571449
FLIGHT
Because the tank 1 is still going down. Pressure and temp - pressure going down, temperature confirms it.
571455
CAPCOM
Okay.
571503
FLIGHT
EECOM, FLIGHT.
571504
EECOM
Go ahead, FLIGHT.
571505
FLIGHT
Of course, you want to ask yourself if you want to open 3.
  • Open-circuit FUEL CELL 3, perhaps?
571511
EECOM
Open 3?
571512
FLIGHT
Yeah. You don't want to do that?
571514
EECOM
Negative, let's leave 3 like it is.
571524
GNC
FLIGHT, GNC.
571526
FLIGHT
Standby.
571529
FLIGHT
What MAIN BUS do you want up?
571531
EECOM
MAIN A.
571532
FLIGHT
Just like we -
571532
EECOM
Just like it is.
571533
FLIGHT
Just like it is. FUEL CELL 2's on MAIN A.
571537
EECOM
That's affirm.
571538
INCO
FLIGHT, INCO.
571539
FLIGHT
Go.
571540
INCO
OMNI Bravo.
571543
FLIGHT
OMNI Bravo, too, Jack.
571559
FLIGHT
EECOM, FLIGHT.
571601
EECOM
Go ahead, FLIGHT.
571602
FLIGHT
How long can I leave that stuff off and still turn it back on? Any time at all?
571606
EECOM
Negative, FLIGHT. It's like it wipes it out.
  • As dramatized in the film, once the fuel cells are shut off they're done for good.
571609
FLIGHT
Alright.
571618
FLIGHT
EECOM, FLIGHT.
571621
FLIGHT
I don't know. That's what I'm asking, but we've got that shut off now.
571629
FLIGHT
Okay. When you can.
571705
EECOM
That's right, FLIGHT.
571706
FLIGHT
You're ready for that now. Sure, absolutely, huh EECOM?
571709
EECOM
That's it, FLIGHT.
571710
FLIGHT
It's still going down and it's not possible that thing is sort of bottoming out, is it?
571715
EECOM
Well, the rate is slower but we have a little less pressure too, so we would expect it to be a little bit slower.
571721
FLIGHT
You are sure, then; you want to close it.
571724
EECOM
Seems to me we have no choice, FLIGHT.
571729
FLIGHT
Well.
571731
EECOM
Standby one minute; I'll poll my back room.
571732
FLIGHT
It went down again. One more.
571748
EECOM
We're go on that, FLIGHT.
571750
FLIGHT
Okay. That's your best judgement; we think we ought to close that off, huh?
571753
EECOM
That's affirmative.
571754
FLIGHT
It's dropping down to 234. Yeah. Okay. FUEL CELL number 1 REACTANTS coming OFF.
  • psi.
571817
GNC
FLIGHT, GNC.
571819
FLIGHT
Go ahead.
571819
GNC
I think we can help the CMP a bit if we can tell them to enable B/D ROLL in the DAP. He's got A/C turned OFF and he's got A/C selected in the DAP. Can we tell him to -
  • To instruct the DAP that it was allowed to use RCS packages B and D for roll control.
  • The A/C ROLL thrusters were disabled entirely, but the DAP was being asked to use them for roll control.
571828
FLIGHT
Is he under DAP control?
571830
GNC
Well, he goes to it occasionally -
571832
FLIGHT
Okay.
GNC
- he's in - RATE CMD right - ACCEL CMD right now, but -
571835
FLIGHT
Okay. Okay. He's got A/C off, huh?
571837
GNC
Right.
571839
FLIGHT
CAPCOM, when you get a spare minute there, Jack needs to enable B/D ROLL in the DAP if he wants to use it.
571845
FLIGHT
If he wants to use the DAP, that is.
571853
FLIGHT
Jeez, it's really going down.
571916
EECOM
FLIGHT, EECOM.
571916
FLIGHT
Go.
571917
EECOM
Okay, is the - LM gotten all set up for using LM systems for supporting the CSM?
571923
TELMU
That's affirmative.
571925
FLIGHT
Yes.
571926
EECOM
Okay. We'll get you time as to what it looks like we'll have for power here, shortly.
571931
FLIGHT
TELMU and CONTROL, FLIGHT.
571933
CONTROL
CONTROL here.
571935
FLIGHT
Keep reminding me of that heater; now I don't want to let that thing go too long.
571938
CONTROL
Okay. We're still trying to get some data - substantiating data on that, FLIGHT. My own personal opinion is the sooner we can take care of that, the better off I'm going to feel about it.
571947
FLIGHT
Yeah, okay, Hal. Go get 'em.
571950
TELMU
Okay; and FLIGHT, TELMU. We're working on a procedure right now that powers the LM internally from its own power.
571955
FLIGHT
Yes. Fine.
571957
INCO
FLIGHT, INCO.
571957
FLIGHT
Go.
571958
INCO
Save you a little more power to turn the HIGH GAIN antenna switch to OFF.
572002
FLIGHT
HIGH GAIN antenna OFF?
572003
INCO
POWER switch OFF.
572004
FLIGHT
POWER switch. You're doing okay on the OMNIs, huh?
572007
INCO
Yes. We've got the 210s.
572009
FLIGHT
Okay. CAPCOM, he can turn the HIGH GAIN antenna POWER switch OFF; we're doing fine on the OMNIs. We've got the big dish.
572015
EECOM
FLIGHT, EECOM.
572015
FLIGHT
Go.
572016
EECOM
Like to charge BATTERY A.
572017
FLIGHT
Yeah, I was wondering about that. Do you - let me get the HIGH GAIN POWER off first, okay? Clint?
572023
EECOM
Okay.
572031
FLIGHT
How much - how many amps will that give us, EECOM?
572034
EECOM
About 1.3, 1.4 amps - - amp-hours per hour. The cost is about 1.5 amps.
  • The rate of battery charge.
572041
FLIGHT
So it's no big deal on the amps.
572043
EECOM
That's right. And we'd like to use whatever time we have to put energy back into the battery.
572048
FLIGHT
Yeah, and I see Oâ‚‚ tank 1 pressure is 217.
572051
EECOM
That's affirmative. It's still coming down.
572053
FLIGHT
CAPCOM, FLIGHT.
572055
CAPCOM
Go, FLIGHT - standby.
572106
FLIGHT
GUIDANCE, you want anything done with the CMC right now?
572110
GUIDO
FLIGHT, we would like a VERB 74 before they power it down.
572113
FLIGHT
VERB 74, CAPCOM.
572115
CAPCOM
You ready for it now?
572117
GUIDO
Standby, FLIGHT, let me the flight - site configured.
572129
FLIGHT
EECOM, FLIGHT.
572130
EECOM
Go ahead, FLIGHT.
572131
FLIGHT
Does the temperature in tank 2 correspond with the pressure reading?
572134
EECOM
Let me see how close it is, FLIGHT.
572148
GUIDO
FLIGHT, GUIDANCE -
572148
FLIGHT
Go.
GUIDO
- we're ready.
572150
FLIGHT
Yeah; VERB 74 you want?
572152
GUIDO
Roger.
572153
FLIGHT
VERB 74.
572159
EECOM
FLIGHT, EECOM.
572200
FLIGHT
Go.
572200
EECOM
Temperature and pressure correspond - they verify that the pressure reading's right.
572205
FLIGHT
In tank 2?
572207
EECOM
Tank - standby.
572211
EECOM
That's right, FLIGHT. Tank 2.
572213
FLIGHT
Okay. Now, is it possible that we still have that tank and it's good? And we could somehow get power on B and use it?
  • MAIN DC BUS B
572221
EECOM
It's not likely, FLIGHT.
572223
FLIGHT
What's not likely, Clint?
572224
EECOM
Not likely to be able to - actually have anything left in the tank.
572229
FLIGHT
You don't think so?
572231
EECOM
I don't think so, but let's - we'll pulse (??) that one to you.
572234
FLIGHT
Alright.
572234
EECOM
Let me get you a time it looks like we've got on tank 1 here.
572237
FLIGHT
Alright.
572255
FLIGHT
TELMU, FLIGHT.
572257
TELMU
Go, FLIGHT.
572258
FLIGHT
Is there anything simple that we can refer the crew to to get them thinking about using the LM here? Have you got anything in the checklist, paperwork that'll describe to them what your intentions are?
572311
TELMU
Negative, there's nothing documented in contingency. We're thinking about using the LM as a lifeboat, we have some procedures here. On the ground, though.
572318
FLIGHT
I'm sure you do. What do they amount to? Flying with the tunnel open?
572321
TELMU
Roger. Just a LM, low power - low - supplying power to the CSM.
572327
FLIGHT
Supplying power to the CSM?
572329
TELMU
Yes; about 5 amps.
572331
FLIGHT
To what?
572334
TELMU
To their MAIN BUS B.
  • Which hasn't actually functioned since the accident.
572335
FLIGHT
Okay. Where did - well, MAIN B is in bad shape. We don't have anything on MAIN B right now. What's that power for? TELMU?
572346
TELMU
Just anything they might need it for.
572348
FLIGHT
GNC and EECOM?
572350
EECOM
Go, FLIGHT.
572350
GNC
Go, FLIGHT.
572350
FLIGHT
What power do you need from the LM?
572355
EECOM
Okay, we'll -
572400
FLIGHT
That's right.
572401
EECOM
We confirm that here.
572406
EECOM
FLIGHT, EECOM. Looks like we've got about 40 minutes left in that tank.
572411
EECOM
That's affirmative.
572412
FLIGHT
Yes.
572415
EECOM
Like to get battery A on charge, FLIGHT.
572420
FLIGHT
Now -
572444
FLIGHT
CAPCOM, just for his information we're not going to do a DPS burn until we hook around the Moon. Let them know that. And that's at about 79 +30.
  • This later turns out to be incorrect. FLIGHT is thinking of the PC+2 burn to send the spacecraft home from the far side of the Moon, but one correction burn ends up happening before then to get the spacecraft back on a return trajectory as early as possible.
572523
GUIDO
FLIGHT, GUIDANCE.
572524
FLIGHT
Go ahead.
572524
GUIDO
We didn't get a good recording on that VERB 74, we'll need them to do it again.
572530
EECOM
FLIGHT, EECOM.
572531
FLIGHT
Go ahead.
572531
EECOM
We'd like to get BATTERY A on charge, and we'd like to go ahead and get some more power off if we can. I'm not sure what the situation is on getting the computer up -
572539
FLIGHT
Clint, let me ask you now, is there anything you want to do - trying to pump up the other tank? Anything? Are you satisfied that both of these tanks are going down and we're past helping them? Even with batteries? That's what I'm getting at.
572553
FLIGHT
I'm trying to be sure that you're satisfied that there's nothing else we can do.
572556
EECOM
About all we can do is power down and let heat leak help us some - which is probably going to be trivial.
572602
FLIGHT
Okay. There's nothing else you want to try.
572606
FLIGHT
That's the only reason I'm delaying on this BATTERY A charge, Clint; to be sure you've gone through everything and you don't have any other tricks up your sleeve.
572613
EECOM
Sure don't, FLIGHT.
572614
FLIGHT
Okay, what other power do you want to take off before we start the charge?
572618
EECOM
Well, looks like we're going to get into the control area. Whatever they can give up we'll have to come up with, here.
572623
FLIGHT
Okay, are you ready to go ahead and charge BATTERY A?
572625
EECOM
That's affirmative.
572626
FLIGHT
CAPCOM, why don't they get all they can in BATTERY A?
572629
CAPCOM
Okay, and Jack also asked me if we wanted to get a P52 and get the LM platform up with the -
572635
FLIGHT
What do you think of that? GUIDANCE?
572638
GUIDO
Go ahead, FLIGHT.
572638
FLIGHT
CONTROL. Question is, do you want to do a quick P52 on the CSM so that we can do an align to the LM? I don't know if we want to keep that LM platform up all that time anyway.
572647
CONTROL
Negative, that's too much power in my mind, FLIGHT, to keep that thing running for all that time.
572651
FLIGHT
Okay, therefore you don't -
572653
CONTROL
My vote is not to do that.
572654
FLIGHT
Yeah.
572655
GUIDO
Mine, too.
572655
FLIGHT
Okay, CAPCOM, we don't see any need in doing that, because we wouldn't be using the LM platform until about 79 hours.
572703
CAPCOM
Okay, you don't want to worry about the LM platform. We'll align it later with the AOT, huh?
572711
CONTROL
FLIGHT, CONTROL.
572716
FLIGHT
Yeah.
572740
FLIGHT
Did you say BATTERY A charge?
572742
CAPCOM
Yup.
572743
FLIGHT
Okay. EECOM, we charging A? Watch it, there, okay?
572745
EECOM
I'm watching; it's fine.
572748
FLIGHT
Okay.
572751
FLIGHT
EECOM?
572752
EECOM
Go, FLIGHT.
572752
FLIGHT
Go one more time around that room. We're letting this thing go down, although I realize we don't have any more thoughts to do, but I want to be sure that if there's anything we can do here, that we're doing it. To keep your -
572803
EECOM
Just power down, FLIGHT. All we can power down will put us in that much better configuration.
572808
FLIGHT
Okay, I got that part but are there any other things that you can do besides that, is what I'm getting at?
572813
EECOM
Negative, FLIGHT.
572814
FLIGHT
Okay. GNC, can you help EECOM there as to what else you might power down, if anything? I don't know whether you can or not.
572819
GNC
Roger, FLIGHT. We'll work on that, although we're in an ATTITUDE HOLD situation here, and I'd hate to give up the CMC and the IMU right now.
572829
FLIGHT
Yeah, well the CMC doesn't matter.
  • The SCS can perform an ATT HOLD without input from the CMC.
572834
GNC
Okay, we'll work on it, FLIGHT.
572835
EECOM
FLIGHT, we're not going to have anything in about 40 minutes here.
572849
EECOM
FLIGHT, EECOM.
572855
EECOM
FLIGHT, EECOM.
572857
FLIGHT
Go ahead.
572858
EECOM
Okay, we've got an update on the time. Looks like we've got about 18 minutes until we get down to 100psi, and that's the cutoff point.
572904
FLIGHT
Alright. But we're charging BATTERY A.
572906
EECOM
Well, that doesn't mean much in 18 minutes, though. But we're doing all we can do.
572910
FLIGHT
Alright. CONTROL and GUIDANCE, one more time.
572914
GUIDO
Go ahead.
572914
CONTROL
Go, FLIGHT.
572915
FLIGHT
Will it do any good at all to - TELMU, FLIGHT -
572919
TELMU
Go, FLIGHT.
FLIGHT
- join in here. The question is, should we try to do a quick align with the CSM and do an alignment in the LM? Can we keep an alignment in the LM up until 79 hours? Can you keep that kind of power on?
572930
TELMU
Standby.
572932
FLIGHT
The pilots are reporting it's difficult to do that alignment from scratch in the LM docked.
  • Astronauts were in the MOCR providing advice; in this case the docked configuration occludes vision and reflects light in a way that makes the alignment telescope hard to use.
572939
FLIGHT
And we got a tradeoff here as to whether we can stand that kind of power.
572945
TELMU
Standby 1, FLIGHT.
572946
FLIGHT
Alright. Pronto.
572956
GNC
FLIGHT, GNC. We'd save a little power if we turn all the jets off in QUAD C. We're pulsing those jets and we suspect that we've - closed the PROP ISOL VALVES in QUAD C so it's doing us no good right now, so we need to turn off all the jets in the quad.
  • The implication is not that they have chosen to close the valves, but that they have jarred shut. And in this case, to reopen them would require the dead DC MAIN BUS B.
  • Even with the propellant feed lines closed, with the thruster still on power would still be spent powering the solenoids in an attempt to fire.
573013
FLIGHT
Oh, okay, you mean RCS SELECT -
573015
GNC
That's right.
FLIGHT
RCS SELECT AUTO ?? check.
573027
FLIGHT
EECOM? Any need to dump water?
573034
EECOM
Negative on that, FLIGHT.
573035
FLIGHT
No sweat there, Jack.
  • CAPCOM Jack Lousma, still on shift since before the accident.
573046
EECOM
FLIGHT, EECOM.
573047
FLIGHT
Go ahead.
573047
EECOM
They get the POWER AMPL off? I heard them talking about it a while ago. I don't know.
573051
INCO
No, they don't.
573052
EECOM
We can eliminate that since we're in the 85 foot gainway.
573057
INCO
That's not exactly true -
573059
EECOM
Okay.
INCO
We're looking at it to see how far down we can go.
573102
FLIGHT
Alright.
573103
EECOM
I believe GNC has got some things we can turn down here.
573105
FLIGHT
Yeah, he just - AUTO RCS in Quad Charlie can go off; we've got that Quad PROP ISOL'd. Which I didn't know, but.
573111
EECOM
Pardon?
573112
FLIGHT
Quad Charlie AUTO RCS - GNC, FLIGHT.
573116
FLIGHT
GNC, FLIGHT.
573118
GNC
Go ahead, FLIGHT.
573119
FLIGHT
Confirm: Quad Charlie is PROP ISOL'd off, right?
573123
GNC
Well, we haven't confirmed that, FLIGHT, but it appears that that's the situation we're in. The shock of the Oâ‚‚ thing, it probably closed those valves -
573135
FLIGHT
Oh, you think -
GNC
- and we haven't been able to open them because those are powered off of MAIN B.
573139
FLIGHT
Mm. Okay.
573140
GNC
But A appears to be working okay.
573142
FLIGHT
Okay. We think Quad Charlie's PROP ISOL'd off, Jack, so in that case we ought to turn off the AUTO RCS SELECT; that'll save a little power. Probably not much.
573153
CAPCOM
Yeah - you want AUTO RCS OFF on Charlie?
573155
FLIGHT
Uh huh.
573156
CAPCOM
How about antennas? How are we doing? Did I hear them give me some bad COMM there?
573202
INCO
We're in pretty good shape right now, FLIGHT.
573203
CAPCOM
Okay.
573204
FLIGHT
EECOM, FLIGHT.
573206
EECOM
Go ahead, FLIGHT.
573206
FLIGHT
Let me try one more time. Is it possible that if we got power to MAIN B that we could get TANK 2 powered up and up the pressure?
573216
EECOM
We don't feel like that's a possibility, FLIGHT. We might conceivably get power to B but we don't feel like we can get anything out of TANK 2.
573224
FLIGHT
Okay, now why is that? Tell me why. I'm just -
573227
EECOM
It's because the numbers we're looking at indicate that it's essentially ambient.
  • Pressure-wise.
573232
FLIGHT
Hold on.
573235
FLIGHT
Okay.
573238
FLIGHT
GNC, watch we don't pick up any rates now, will you please?
573241
GNC
Okay, FLIGHT.
573252
FLIGHT
EECOM, FLIGHT.
573253
EECOM
Go, FLIGHT.
573253
FLIGHT
How long have we got now in the cell?
573255
EECOM
Last account we had 18 minutes, let me get an update.
573257
FLIGHT
Okay. TELMU, what have we got to do to power up to get some COMM on the LM?
573301
TELMU
Okay FLIGHT, we've got a procedure here that gets power up first on the LM.
573313
FLIGHT
Yeah. EECOM, FLIGHT.
573315
EECOM
Go, FLIGHT.
573316
FLIGHT
Yeah, that gets us power but what do you want up? Just the COMM?
573320
EECOM
We'll have to have an environment for the crew, the way this can be -
573323
FLIGHT
That's what I'm asking you, EECOM and TELMU. We've got to figure out how - we're just about out of CSM talkin'.
573330
TELMU
Okay.
573330
FLIGHT
What do you want them to power up in the LM?
573332
TELMU
Standby 1.
573334
EECOM
FLIGHT, EECOM -
573335
FLIGHT
Alright.
EECOM
- our input is, here, that we'll have to live out at the LM.
573337
FLIGHT
I understand.
573340
EECOM
Okay.
573354
FLIGHT
We've got a power up procedure here from TELMU but we've got to start thinking about what you want pow - configured in the ECS and the COMM.
573400
EECOM
Right.
573401
TELMU
That gets power in the LM, and then we'll get you some COMM and TM here.
573404
FLIGHT
Yeah - do we need to send any power to the CSM? For the platform, or anything? Or, can we even do that?
  • Sending power back over to the CSM wasn't part of the original design consideration.
573412
EECOM
I'm not sure we can do that yet.
573413
FLIGHT
Can't do that.
573416
FLIGHT
That was a long time ago.
573417
CAPCOM
Okay. When do you want them to start working on this procedure?
573420
FLIGHT
Well, tell them they gotta start thinking about the power - going over and powering right now because they're going to have lights problem in a little while in the CSM.
573426
CAPCOM
Okay, I'll send it up. And they wanted to know if we wanted them to try to reset the PROPELLANT VALVES in the secondaries.
573435
GNC
Yeah, roger, FLIGHT.
573436
FLIGHT
GNC?
573437
GNC
That won't do any good because we lost MAIN B and those valves are powered off of B.
573439
FLIGHT
No - no, CAPCOM. It's off MAIN B.
573533
FLIGHT
EE - TELMU, FLIGHT.
573535
TELMU
Go, FLIGHT.
573535
FLIGHT
Does this title - this PG&E (??) page - mean anything more than just power up the LM?
573539
TELMU
No. That's all.
573540
FLIGHT
Alright.
573543
EECOM
FLIGHT, EECOM.
573551
EECOM
FLIGHT, EECOM.
573552
FLIGHT
Go ahead.
573553
EECOM
We'd like to go ahead and power down the CSM all we can except leave that battery charger on. Of course, leave a little light because we're going to be there in 15 minutes anyway.
573602
FLIGHT
CAPCOM, we're going to out of power in the CSM in 15 minutes in the fuel cells. We want them to start getting the tunnel clear and get ready and get over there and power up the LM as soon as they can, they ought to send somebody over there. EECOM, what ought they do to leave the cockpit?
  • At this point, the CSM is clearly a lost cause. But in the 15 minutes of power left, the controllers and crew need to ensure that the spacecraft life support, illumination, communications, and navigation are all ready to go in the LM, or the crew will be flying blind in every possible way: unconscious, in the dark, with no support or instructions from the ground, and with no idea which way the spacecraft is pointing.
573615
EECOM
Say again?
573616
FLIGHT
EECOM and GNC. What ought we do to leave the CSM cockpit? We're going to lose power on the buses, now what do you want to switch off?
573626
EECOM
Power it down, FLIGHT. All of it.
573627
GNC
The CMC and the IMU, mainly, FLIGHT.
573823
FLIGHT (off loop)
That's the problem.
573840
EECOM
FLIGHT, EECOM.
573840
FLIGHT
Go ahead.
573842
EECOM
Last ditch stand on Oâ‚‚ tank 2, let's turn the fans on.
573846
EECOM
That'll cost about 1 amp.
573848
FLIGHT
What are they off? MAIN A?
573851
EECOM
They're on AC.
573852
FLIGHT
Okay. Fans in tank 2 ON.
573856
EECOM
Fans, tank 2, ON.
573858
FLIGHT
CAPCOM, FLIGHT.
573901
FLIGHT
Tell them to try the fans in tank 2. They're off the AC and last ditch stand we'll try the fans in tank 2. Turn the fans on in TANK 2, it only takes 1 amp.
573910
CAPCOM
Okay.
573925
FLIGHT
TELMU, GUIDANCE, and CONTROL; FLIGHT.
573927
CONTROL
CONTROL, here.
573927
GUIDO
Go, FLIGHT.
573928
FLIGHT
Do you know status of the CSM platform right now?
573932
GUIDO
Negative, FLIGHT. It's - good as far as we know.
573937
FLIGHT
No, no, no. Do you know its orientation? Do you know its orientation?
573941
GUIDO
It's PTC REFSMMAT.
573942
FLIGHT
Yeah. You know what you've got, and it's okay.
573944
GUIDO
Right.
573948
FLIGHT
EECOM?
573949
EECOM
Go, FLIGHT.
573950
FLIGHT
Did he get it? Fans 2 ON?
573952
EECOM
We can't tell, FLIGHT.
573953
FLIGHT
He got it, did he, Jack? Number 2 fans?
573956
CAPCOM (off loop)
He said he got it.
573957
FLIGHT
Okay.
573958
FLIGHT
GUIDANCE, CONTROL, and TELMU. The point is, should we, quick - if you guys can't run out the power study, run out - align the - your IMU to the CSM while we study the problem? See what we got in the way of power?
574012
FLIGHT
Tom Stafford is concerned that they'll have a hell of a time getting the platform aligned in the LM with AOT.
  • It was already known that sun glare could cause problems finding star positions with the vehicles docked. On top of that, debris would prove a huge issue once this procedure was actually attempted.
574017
GUIDO
I agree, FLIGHT.
574019
CONTROL
I agree, too, FLIGHT.
574020
FLIGHT
Okay. What should we tell them to do?
574023
CONTROL
It's going to take about 15, 20 minutes as I understand it to do that procedure, that right GUIDANCE?
574026
FLIGHT
Which procedure?
574027
GUIDO
The docked alignment -
574028
CONTROL
Docked align.
574029
CAPCOM
How about you give me an Activation page?
574030
FLIGHT
How about - a -
574031
GUIDO
Well, how long does it take to -
FLIGHT
- how about a coarse align? At least you get - at least you start it up in -
574035
GUIDO
Okay, that's in the ballpark, FLIGHT; that's correct.
574037
FLIGHT
Okay, now. What do you - what do we do to get this done? EECOM, you got all my power in the LM with that procedure? What power have you got on the LM?
  • It's possible FLIGHT meant to ring TELMU here.
574044
GUIDO
FLIGHT, GUIDANCE.
574045
FLIGHT
Go ahead.
574046
GUIDO
We ought to go ahead and go a P52 first in the CSM and get -
574048
FLIGHT
That's what I'm asking you -
GUIDO
- a reference. Right -
FLIGHT
- do you know? Well, do you have one now? We don't have much time! Do you have a good one now? As far as you know?
574055
GUIDO
A good alignment?
574056
FLIGHT
Yeah, that's what I'm asking! Do you have a good alignment?
574100
GNC
FLIGHT, GNC.
574101
FLIGHT
And I'm not worried about the tenths of a degree, either.
574104
EECOM
FLIGHT, EECOM.
574104
GUIDO
Well, it ought to be that good, FLIGHT.
574105
FLIGHT
Yeah, okay. So we don't need to do a P52 -
574106
EECOM
FLIGHT, EECOM.
FLIGHT
Go ahead.
574108
EECOM
Okay, we need to open up the surge tank. The manifold pressure is dropping.
574115
FLIGHT
Uh - okay. Wouldn't you rather power that from the LM - pump that up from the LM?
574121
EECOM
Well, we - - we've got to get into the LM first, FLIGHT.
574126
FLIGHT
CAPCOM, get them going in the LM. We've got to get the oxygen on in the LM.
574135
TELMU
FLIGHT, TELMU.
574141
TELMU
FLIGHT, TELMU.
574142
FLIGHT
Go ahead.
574143
TELMU
Okay, we have a procedure here. Probably the easiest thing is to refer them to Activation -
574149
FLIGHT
Go.
574149
EECOM
FLIGHT, EECOM.
TELMU
- 11 and Activation 12.
  • If you want to follow along these Activation pages, they start around page 6 of this PDF.
574152
FLIGHT
What will that do for us?
574153
TELMU
That gives them the COMM -
574155
FLIGHT
Okay, Activation 11 -
574157
TELMU
And 12.
FLIGHT
- and 12.
574200
TELMU
13, step 1.
574202
FLIGHT
Okay. Got that, Jack?
574203
TELMU
And cross out the VHF stuff.
574205
FLIGHT
Okay -
574206
EECOM
FLIGHT, EECOM.
FLIGHT
- does that give us ECS also?
574208
TELMU
That gives us glycol circulation.
574210
FLIGHT
Okay, how about ECS? Come on, I need some oxygen.
574213
EECOM
Disregard the surge tank request.
574214
FLIGHT
Alright.
574215
FLIGHT
Give me some oxygen.
574216
TELMU
Negative.
574217
FLIGHT
Do I need some oxygen right now?
574218
TELMU
Roger - just go to Activation step 1.
  • TELMU probably did not mean to say "step" here.
574223
FLIGHT
And start there, huh?
574225
TELMU
Right.
574226
FLIGHT
And go how many steps? Activation -
574229
TELMU
Just 1. Step 3.
574233
FLIGHT
Uh.
574235
TELMU
Activation 1, step 3, FLIGHT.
574236
FLIGHT
Step 3?
574237
TELMU
Right.
574238
FLIGHT
And then what? Activation 11?
574240
TELMU
Activation 11 -
574242
FLIGHT
12?
574242
TELMU
12, 13 step 1.
574245
FLIGHT
Okay. Got that, CAPCOM?
574249
CAPCOM
I've got Activation 1 step 3; Activation 11, 12, 13 step 1.
574253
TELMU
Roger, and FLIGHT, in Activation 11, omit step 1.
574256
FLIGHT
Alright.
574258
FLIGHT
Okay. That'll give them what, now; glycol flow, COMM, and some ECS? Is that right? That's what we want.
574305
TELMU
Roger.
574306
FLIGHT
Okay. That's what we want.
574323
TELMU
FLIGHT, TELMU.
574324
FLIGHT
Go.
574324
TELMU
One other input: we also need the DEMAND REGs to CABIN.
574329
FLIGHT
Roger.
574352
FLIGHT
Do you want them to do Activation 1 down to step 3 - TELMU?
574357
TELMU
That's affirmative.
574358
FLIGHT
It's down to step 3.
574401
FLIGHT
Down to step 3.
574406
FLIGHT
That's 12 and 13.
574408
FLIGHT
And DEMAND REGs to CABIN.
574414
FLIGHT
Right.
574416
FLIGHT
TELMU, when do we do DEMAND REGs to CABIN? That's the end of those three steps?
574419
TELMU
At the end of the sequence.
574420
FLIGHT
At the end of the sequence, DEMAND REGs to CABIN, Jack.
574424
FLIGHT
And I - I'm still not satisfied he's got Activation 1 down to step 3.
574434
EECOM
FLIGHT, EECOM. The voltage is going to begin to drop and we'll need to power down with it.
574440
FLIGHT
Okay. What do you want them to do? Turn everything off?
574442
EECOM
Leave the lights on, and - leave the lights on. As far as they need it.
574445
FLIGHT
And what are they powered from, the LM?
574448
EECOM
They'll be powered from the CSM as long as we have anything. We will bring up BAT A when we get down about 25 volts or so.
574455
FLIGHT
Why?
574456
EECOM
Until they get into the LM and keep their lights up and whatever they have to have.
574500
GNC
We don't want to destroy the IMU alignment in the CSM right now, so we've got to keep that up, I assume, until you get the LM aligned, right?
574505
FLIGHT
Mm. Okay.
574509
EECOM
We'll do that by bringing BAT A on MAIN A.
574511
FLIGHT
Well, we'd better quickly do that or we're going to be losing it.
574513
EECOM
We've got 3 or 4 minutes, FLIGHT.
  • FLIGHT appears to laugh at this line.
574516
FLIGHT
Yeah -
574516
GNC
But the thing is, we want to pass to them - when he does see it go down. Or, start going down. To get BATTERY A On.
574522
FLIGHT
Is that -
574522
GNC
To watch it.
574523
FLIGHT
Now, you think we really want to spend that to keep the platform on? We're using the entry batteries, too.
574528
EECOM
What we take out of the battery we won't get back.
574531
FLIGHT
That's right.
574534
FLIGHT
No. Down to step 3. Down to step 3. All the way down to step 3.
574546
FLIGHT
Yeah. Alright, okay. I just want to be sure we're sure we want to do that. And quick, get a coarse align. CONTROL and TELMU, will the steps I got give me a coarse align?
574558
FLIGHT
CONTROL and TELMU -
574559
TELMU
Negative, FLIGHT.
574600
CONTROL
Go ahead; CONTROL here.
574600
FLIGHT
Will those steps that we've passed so far get me a coarse align?
574604
TELMU
Negative, that just gets you -
574605
CONTROL
Standby.
574606
FLIGHT
What else I gotta do to get a coarse align?
574608
CONTROL
Standby, FLIGHT.
574609
EECOM
Can we get those read up to the crew to start the power down? Of course, they can power down everything, but here's a good start.
574615
FLIGHT (off loop)
?? the battery will drain as they power down?
574616
EECOM
Roger.
574617
FLIGHT (off loop)
Then it's just the IMU?
574618
EECOM
That's roger.
574619
FLIGHT
Okay, but we wanted to keep that up for a little while, I thought you just said, with the BATTERY A. To get a coarse align on the LM.
574625
EECOM
Well, maybe there's a bit of confusion here.
574627
FLIGHT
Yeah. You just gave - you don't want to turn the IMU off until we get a coarse align on the LM, right?
574632
EECOM
That's affirm, FLIGHT.
574632
GNC
That's affirm, FLIGHT. And we'll support a battery until you get that.
574634
FLIGHT
Okay. CAPCOM, we want to power on down the CSM only. We want to put BAT A on - about now? EECOM?
574641
EECOM
Negative, not yet, FLIGHT. We'll let you know.
574643
FLIGHT
We're going to put BATTERY A on - can you put it on while it's charging?
574647
Maroon EECOM
No. We'll have to take the charge off.
  • Starting here, two EECOMs are active on the loop. Maroon EECOM is John Aaron.
574648
EECOM
Negative.
574649
FLIGHT
We want to take -
574651
EECOM
We'll have to power down the charger and put it on MAIN A.
574654
FLIGHT
Alright.
574702
TELMU
The VHF is not required, FLIGHT.
574705
FLIGHT
No VHF.
574709
FLIGHT
Well.
574723
FLIGHT
TELMU and CONTROL.
574725
CONTROL
Go ahead.
574725
FLIGHT
Look, it's unclear enough to me that I'm going to try to get a coarse align in the LM. You know where we are, then, right, Will?
  • GUIDO Will Presley.
574730
FLIGHT
Alright. Now, what do I have to do to get it?
574732
CONTROL
Okay, I'm getting you that step right now, FLIGHT.
574735
FLIGHT
Okay. CAPCOM, FLIGHT.
574736
CAPCOM
Go ahead.
574737
FLIGHT
When we get a little lower, we're going to have them pull BAT A off, and we'll get him to put it on MAIN BUS A. We are then going to try to hold up the IMU long enough to get a coarse align in the LM, and then we'll see whether we're going to keep that coarse align up or not, but for right now we're running the profiles and we'll have to determine that.
574752
CAPCOM
Okay.
574752
FLIGHT
Think that's the course of action, let Jack know that much.
574754
CAPCOM
Okay. And he wants to know what he's going to see and what he should do when he sees it happen to FUEL CELL 2.
574801
FLIGHT
We're interested in keeping up the IMU and the lights, for him to see. That's all.
574807
FLIGHT
EECOM, GNC: everything else goes off? INCO?
574812
GNC
That's affirm, FLIGHT.
574813
INCO
Good plan.
574813
FLIGHT
GNC? Anything else goes off?
574814
GNC
Roger, FLIGHT.
574816
EECOM
The only concern we have, FLIGHT -
574818
FLIGHT
I just - yeah, go ahead.
574820
EECOM
- is the IMU heater power. And - for the CSM.
574825
FLIGHT
Well? What do you want?
574826
EECOM
Well, if you want to maintain the IMU for re-entry, we've got to have the heater power on.
574830
FLIGHT
How much is that?
574831
EECOM
Standby, we'll take a look.
574843
EECOM
FLIGHT, EECOM, we can take it off at any time.
574844
FLIGHT
Take it off now, Jack.
574846
FLIGHT
Take it off.
574850
CAPCOM
Okay, I need some LM IMU align procedures.
574853
FLIGHT
Yeah.
574855
EECOM
FLIGHT, EECOM.
574856
FLIGHT
Go.
574856
EECOM
We need to go ahead and start that power down any time.
574900
FLIGHT
Okay, do you want me to put BATTERY A on yet?
574902
Maroon EECOM
Negative, FLIGHT.
574902
EECOM
Negative, we'll give you a cue on that.
574903
FLIGHT
Okay. Where do you want me to tell them to start, Clint?
574906
EECOM
Keep your lights up and everything else has got to go.
574909
FLIGHT
Everything else except the IMU.
574911
Maroon EECOM
That's affirm, FLIGHT.
574911
EECOM
Roger.
574912
FLIGHT
Okay. Say again?
574914
EECOM
That's affirmative.
574914
FLIGHT
How about the COMM? We don't have COMM yet with the LM.
574918
INCO
As soon as you take that POWER AMPL off we're going to lose data.
  • The downlinked telemetry feed.
574921
FLIGHT
Okay, well let's - yes, let's be clear what we're doing here.
574925
FLIGHT
We're discontinuing BATTERY A.
574929
FLIGHT
Okay, so far I've got the IMU and the POWER AMPL up. Anything else?
574937
INCO
That should do it, FLIGHT.
574939
FLIGHT
How about COMM?
574939
INCO
Leave the PCM up, too. Leave the COMM configuration alone.
574942
FLIGHT
Yeah, leave the COMM configuration alone, CAPCOM, until we get COMM with the LM.
574948
TELMU
FLIGHT, TELMU.
574949
FLIGHT
Go.
574950
TELMU
Okay, we've got one more - we want to make sure his SUIT FAN 1 is - our SUIT FAN is positioned to 1.
  • In both spacecraft, the suit fans were run open-circuit with the entire cabin to scrub the air when the astronauts were not wearing suits. This is the answer to the oxygen request from earlier.
574958
CONTROL
FLIGHT, CONTROL.
575000
TELMU
And the - on panel 11 we want ECS SUIT FAN 1 breaker closed.
575005
FLIGHT
Okay, you want SUIT FAN number 1 on.
575007
TELMU
Yeah.
575008
FLIGHT
With the breaker. Go ahead, CONTROL.
575009
CONTROL
Okay, FLIGHT, here's what we need.
575011
FLIGHT
Alright, standby. CAPCOM, in the LM we need the SUIT FAN number 1 and its circuit breaker on to get flow, and CONTROL's coming to me with the IMU procedure. Go, CONTROL.
575023
CONTROL
Panel 11. LGC/DSKY closed.
575027
FLIGHT
That's the circuit breaker?
575028
CONTROL
Yes.
575029
FLIGHT
Panel 11 closed; yup.
575031
CONTROL
Okay. Then go to Activation page 25, do steps 1, 2, and 3.
575036
FLIGHT
1, 2, and 3? And what will that get us?
575039
CONTROL
Okay, that'll get everything up and running and the platform turned on.
575043
FLIGHT
And will that get us a coarse align?
575044
CONTROL
Negative, that'll put you in P00.
575045
FLIGHT
Okay, and then do -
575046
CONTROL
Go to Activation 37.
575048
FLIGHT
Okay.
575048
CONTROL
Docked IMU coarse align procedure is there for you.
575051
FLIGHT
Okay. Got it, CAPCOM?
575052
CONTROL
Excuse me - 30. That's Activation 30, FLIGHT.
575055
FLIGHT
Okay.
575056
CAPCOM
Okay. I've got LGC/DSKY close, Activation 25 steps 1, 2, and 3, Activation 30.
575102
FLIGHT
Okay, TELMU, one more question. Are we bringing up glycol flow here?
575106
TELMU
We brought up circulation. We have not activated the boiler.
575108
FLIGHT
Should we?
575109
TELMU
I don't know; we're working on it, FLIGHT.
575110
FLIGHT
Alright.
575112
EECOM
FLIGHT, EECOM.
575113
FLIGHT
Go.
575113
EECOM
Okay, when we go through this power down when we bring BAT A up, we want them to go through the fuel cell shutdown procedure for fuel cell 2, just in case the pressure should recover and we would still have a fuel cell later. Which is not likely, but it's not going to cost us anything to do it except a little time.
575129
FLIGHT
FUEL CELL 2 shutdown; that closes the reactants?
575132
EECOM
I'm - I'm sorry. STANDBY. STANDBY's the word.
575135
FLIGHT
Yeah. Okay.
575140
FLIGHT
You want me to put fuel cell number 2 on STANDBY when? After we put BATTERY A on?
575144
EECOM
That's affirmative.
575145
FLIGHT
How close are we to doing that?
575147
EECOM
Well, we're looking for it any time now.
575149
FLIGHT
Alright.
575201
FLIGHT
Have we got anybody over in the LM yet, Jack? Can you tell? Somebody climbed over there? They're both over there?
575206
CAPCOM
Yeah, we've got them both over there, and they've just taken the procedure for the activation of the IMU.
575213
FLIGHT
Yeah. Okay. I don't know how long we'll be able to keep that up, but at least we'll have something.
575219
CAPCOM
Okay, and what other things you've got to go up that I missed while I was talking?
575236
CAPCOM
Have we given them the signal on the battery yet?
575242
FLIGHT
Uh, no.
575242
EECOM
Negative on that.
575243
Maroon EECOM
About another 20 psi, FLIGHT.
575244
FLIGHT
Yeah, GNC, FLIGHT. What do you want on the heater? Circuit breakers?
575248
GNC
I have them still working on that, FLIGHT. We're trying to get it - find out if we can power them down and bring the platform up later on, whether we've really got a problem there or not.
575256
FLIGHT
Alright. Go ahead. Well you'll have BMAGs.
575259
GNC
Roger.
575316
EECOM
FLIGHT, EECOM.
575317
FLIGHT
Go ahead.
575318
EECOM
We can turn the GLYCOL PUMP off anytime.
575326
EECOM
FLIGHT, EECOM.
575327
FLIGHT
Go ahead.
575327
EECOM
BYPASS on the primary rads.
  • Radiators, which cooled the water/glycol coolant.
575329
Maroon EECOM
Turn the GLYCOL PUMP off.
575331
FLIGHT
CAPCOM, he can turn the GLYCOL PUMP off in the CSM.
575335
CAPCOM
Okay.
575336
EECOM
BYPASS on the rads.
575337
FLIGHT
BYPASS on the rads, and then turn the pump off, huh?
575340
EECOM
Roger.
575340
Maroon EECOM
In that order.
575341
FLIGHT
Okay. BYPASS, and then PUMP off.
575343
TELMU
FLIGHT, TELMU.
575344
FLIGHT
Go.
575345
TELMU
Okay, we should be okay thermally in the LM vehicle until we get telemetry, and we'll watch it until we tell you to turn on the boiler.
575354
FLIGHT
Okay, fair enough. You can look at TM before you tell me about the sublimators. Thank you.
575357
TELMU
Roger that.
575359
FLIGHT
BYPASS and the GLYCOL PUMP coming off.
575410
CAPCOM
Okay, FLIGHT. Anything else I missed while I was talking to them there?
575413
FLIGHT
Uh, I don't know, Jack. I haven't been following everything you've said, you did tell them that we're going to be putting BATTERY A on to keep the IMU up. I don't know how much time we've got here; another 20psi was the last I heard.
575425
CAPCOM
Yeah, and I'm standing by for a mark on that.
575427
FLIGHT
Yeah. How much power have we got left on in the CSM, EECOM? We haven't got a lot on -
575432
EECOM
We've got about 40 amps.
575433
FLIGHT
Okay. What else can we take off right now?
575436
EECOM
We passed the list to CAPCOM while we had the IMU heaters - IMU on it. Everything on that list but the IMU.
575443
FLIGHT
Yeah. Got it, Jack? You want them to start powering that stuff down, right Clint?
575450
EECOM
Roger.
575451
FLIGHT
Okay, Jack. Everything but that IMU.
575510
EECOM
FLIGHT, EECOM.
575511
FLIGHT
Go.
575512
EECOM
Oâ‚‚ TANK 2 FANS off.
575515
FLIGHT
You're giving up there, huh?
575516
EECOM
Giving up.
575517
FLIGHT
CAPCOM, Oâ‚‚ FANS 2 off.
575520
CAPCOM
Say again, please?
575521
FLIGHT
Oâ‚‚ TANK 2 FANS can go off. There's nothing happening there.
575525
EECOM
That's confirmed. All FUEL CELL PUMPs off, FLIGHT. That's 1, 2, 3.
575529
FLIGHT
You want to shut 2 down, now?
575530
Maroon EECOM
That's affirm.
575531
EECOM
Just the pumps. Just turn the pumps off.
575532
FLIGHT
Oh. Just the pumps. Okay. All FUEL CELL PUMPs off, CAPCOM. That may be a verify.
575536
CAPCOM
Okay, verify all FUEL CELL PUMPs off, and -
575539
FLIGHT
Fans off.
CAPCOM
- fans off in Oâ‚‚ TANK 2.
575541
FLIGHT
Yeah.
575600
INCO
FLIGHT, INCO, we have the LM downlink coming in.
  • Good news; the beginning of communications with the Lunar Module.
575608
CAPCOM
We don't want them fans and heaters in TANK 1, do we?
575612
FLIGHT
EECOM, you don't want anything on in TANK 1, do you? Or do you?
575615
EECOM
Roger, we want them all on.
575617
FLIGHT
Leave them all on in TANK 1, CAPCOM.
575619
EECOM
That's affirmative.
575619
CAPCOM
Okay.
575624
FLIGHT
I'm still seeing 40 amps. What all have we got on there, EECOM? CMC? IMU?
575629
EECOM
Roger, FLIGHT.
575631
FLIGHT
And some COMM.
575632
EECOM
IMU and CMC still up right now.
575633
FLIGHT
And SUIT FAN.
575635
FLIGHT
Now, EECOM, FLIGHT.
575637
EECOM
Go ahead, FLIGHT.
575637
FLIGHT
Look, I'm worried about shutting this thing down so that it's safe when we want to repower it from the entry batteries.
575642
EECOM
Roger. We don't - we're going to ask you to bring up BAT A whenever we see the voltage begin to drop off.
575646
FLIGHT
I understand that, I still want some kind of closeout configuration. Okay?
575650
EECOM
Affirmative.
575651
FLIGHT
GNC, same with you. And I haven't heard from you on the heaters yet, on the IMU.
575655
GNC
Roger, FLIGHT. Preliminary look at it, looks like we can pull all the circuit breakers - power down the heaters. But we're still trying to get a handle on it.
575702
FLIGHT
We may well have no choice.
575703
GNC
That's a fact.
575705
FLIGHT
I don't know - how many amps do they take?
575707
GNC
10.
575708
FLIGHT
Aw! 10 amps!?
575709
GNC
Roger.
575710
FLIGHT
I got - I'm looking at a hundred and - I'm looking at - fif, sixt, 80 hours!
575714
GNC
Okay. Roger.
575716
FLIGHT
That's academic!
  • Given the LM had a total battery capacity of around 2,250 amp-hours, running the heaters at 10 amps for 80 hours (10 amps × 80 hours = 800 amp-hours) was too much to even consider.
575717
GNC
I understand.
575718
CAPCOM
And FLIGHT, CAPCOM.
575720
FLIGHT
Go ahead.
575720
CAPCOM
Okay, I've got a procedure for COMM activation; 28 on the panel here. It came from somewhere, is this something you want to go up?
575728
FLIGHT
INCO, is that the COMM activation in the LM?
575729
INCO
Negative, FLIGHT, the COMM activation is the same as you've got over there, except we want to change to NORMAL VOICE when he gets squared away. I gave him some steerable angles in case we want to activate it. So I have it - and that's the procedure.
  • CAPCOM
  • Angles to point the steerable S-Band antenna at.
575739
FLIGHT
Can we go on the OMNI right now?
575741
INCO
Roger. As we come up around to Goldstone with the 210 we'll be alright.
  • The Goldstone MSFN site in Southen California.
575744
NETWORK
We have AOS with the 210 now, FLIGHT.
  • For the last 10 seconds or so noise has been creeping into the audio. This is the link with the LM coming in. The cause of that noise will become a critical question and problem in the coming hours.
575746
FLIGHT
We'll stick with the OMNI, yeah, Jack. So don't do anything with that.
575749
NETWORK
FLIGHT, we have OMNI data on the LM right now.
575751
FLIGHT
We have AOS on the LM.
575754
GNC
FLIGHT, GNC.
575755
FLIGHT
Go ahead.
575755
GNC
We've got a better number on that heater power; it only draws about 0.8 amps. So we'd like to leave that up.
575802
CONTROL
FLIGHT, CONTROL.
575804
FLIGHT
Go ahead.
575804
CONTROL
The temp looks good. 129.9.
575806
FLIGHT
Okay. 0.8 amps for the rest of the mission is going to cost me 64 amp-hours. GNC, FLIGHT.
575814
GNC
Go ahead, FLIGHT.
575815
FLIGHT
It's going to cost me 64 amp-hours.
575821
FLIGHT
I can't afford that! Can't I bring it back up without them? Is that absolutely known?
575828
GNC
Yeah, I think you can, FLIGHT, but the platform's way off -
575831
FLIGHT
EECOM, FLIGHT.
575833
EECOM
Go, FLIGHT.
575833
Maroon EECOM
Go ahead, FLIGHT.
575834
FLIGHT
Turn around here a minute. He's talking about the IMU heater, it's going to cost me 0.8 amps, I'm - 142 hours at landing - I'm 80 hours away. That's 64 amp-hours.
575845
EECOM
Forever?
575846
FLIGHT
Can you hack that out of the entry batteries?
575849
TELMU
FLIGHT, TELMU.
575849
EECOM
We might hack it transferring power back from the LM to the CSM, but we can't hack it on the batteries.
575854
Maroon EECOM
FLIGHT, EECOM. Since it's only 0.8 amps let's hack it for a little while here. Then we -
575857
TELMU
FLIGHT, TELMU.
575858
FLIGHT
Go ahead, TELMU.
575859
TELMU
Okay, FLIGHT. It looks like they are still on low-volt taps. We need to get the Activation step 12 substep 3 and go to high taps on the LM batteries, 1 through 4.
575911
FLIGHT
Got it, Jack?
575913
CAPCOM
You want the high taps on the batteries, 1 through 4?
575915
TELMU
Roger, that's Activation 12 step 3. Looks like they're still on low taps.
575959
FLIGHT
CAPCOM, did you give them that about the high taps?
580002
CAPCOM
I gave them that about the high taps and heard them going through it -
580007
TELMU
FLIGHT, looks like we're going to high taps.
580010
FLIGHT
Alright.
580013
INCO
FLIGHT, INCO.
580015
FLIGHT
Calling, FLIGHT.
580016
INCO
INCO. We'd like to get normal voice on the LM on panel 12. FUNCTION switch to VOICE.
580024
FLIGHT
It's coming at you now.
580025
INCO
Okay.
580026
FLIGHT
Okay. Everybody in the room, how about sitting down a minute, and just keeping it a little bit quiet?
580033
CONTROL
FLIGHT, CONTROL.
580033
FLIGHT
Go ahead.
580034
CONTROL
All our systems look real good on LOW BIT RATE.
  • Not that low bitrate is good, but that with the limited data they have on low bitrate things look healthy.
580036
FLIGHT
Thank you.
580037
TELMU
FLIGHT, we look good.
580038
FLIGHT
TELMU's good.
580039
TELMU
We need SUIT GAS diverted to CABIN.
580042
FLIGHT
SUIT GAS diverted to CABIN in the LM, CAPCOM.
580058
FLIGHT
Okay, they're doing the coarse align now. CONTROL, can you see your platform?
580102
CONTROL
Negative. We're on LOW BIT RATE.
580106
GUIDO
FLIGHT, GUIDANCE.
580106
CONTROL
We don't have resolvers.
580108
FLIGHT
Say again?
580109
GUIDO
FLIGHT, GUIDANCE.
580110
FLIGHT
Go.
580110
GUIDO
Okay, we want them to go all the way through to the fine align, past the angles test so we can get a good alignment with the CSM because that CSM is continuing to move.
580118
FLIGHT
Which step do you want to get to?
580120
GUIDO
We want to go all the way through to step 7 in the LM Activation.
580123
CAPCOM
What page?
580124
CONTROL
31.
580125
GUIDO
On page 31.
580127
CAPCOM
Okay, step 7, page 31.
580129
FLIGHT
All the way through that, Jack, that's what he means.
580130
GUIDO
That's affirm.
580143
EECOM
FLIGHT, EECOM.
580144
FLIGHT
Go.
580145
EECOM
Okay, we expect to put the battery on any time now. We're still going to give you a cue on it.
580150
FLIGHT
Okay.
580203
FLIGHT
EECOM, FLIGHT.
580205
EECOM
Go ahead, FLIGHT.
580205
FLIGHT
While they're working the problem, do you want me to leave BATTERY A on MAIN BUS A?
580213
EECOM
When we give you the cue, we'll put -
580213
FLIGHT
For that IMU heater?
580217
FLIGHT
Is that what your plan is?
580218
EECOM
Until we get - until we get through to the LM, that's right.
580221
FLIGHT
Okay. Now, doesn't - GNC, I wanted to hear from both you guys whether you want to leave that on the whole time, but we can stand 0.8 for now on the entry bat.
580229
GNC
Roger, FLIGHT. We're - we feel like we'd probably be able to power it down.
580233
FLIGHT
Okay.
580233
GNC
Preliminary look at it.
580235
CONTROL
FLIGHT, CONTROL.
580236
FLIGHT
Go ahead.
580237
CONTROL
We indicate he still has the LDG RDR HEATERS on; he can open those up if he desires - panel 11 row 3.
580242
FLIGHT
Okay.
580244
FLIGHT
They're in the middle of the align.
580245
CONTROL
Roger.
580246
FLIGHT
But remind me again in a minute, CONTROL.
580247
CONTROL
Okay.
580323
CAPCOM
Are we still a ways from the mark on BAT A?
580325
FLIGHT
I don't know. EECOM, how far away from BAT A?
580328
EECOM
FLIGHT, any time now, but the voltage is still up. We'll cue you.
580332
FLIGHT
Okay, well, I'm afraid it'll go fast, aren't you?
580335
EECOM
Well, we - it'll go pretty fast when it gets there.
580338
FLIGHT
CAPCOM, you primed Jack about BAT A, haven't you?
580341
CAPCOM
I told him we'd give him a mark on BAT A. He wanted to know what to watch for. He'll see the voltage drop but we'll give him the mark.
580348
Maroon EECOM
FLIGHT, EECOM.
580349
FLIGHT
Go ahead.
580349
Maroon EECOM
O₂ to N₂ ∆P is dropping; let's turn BATTERY A on.
  • The drop in nitrogen pressure, which was used to regulate differential pressures in the fuel cell, indicates the oxygen supply pressure is failing.
580352
FLIGHT
CAPCOM, BATTERY A on.
580357
FLIGHT
Tell him to hurry.
580400
FLIGHT
He got it. Good boy.
580408
FLIGHT
GUIDANCE, copy the numbers.
580414
FLIGHT
GUIDANCE, copy those numbers.
580416
GUIDO
Roger, FLIGHT.
580434
FLIGHT
You got BATTERY A on there, EECOM? 11 amps.
580436
EECOM
That's affirmative, FLIGHT. It's on.
580449
FLIGHT
GUIDANCE, FLIGHT.
580450
GUIDO
Go, FLIGHT.
580451
FLIGHT
Let me know when they're all done and you've got what you want in the LM, because I want to get that CSM powered down.
580456
GUIDO
Okay. We can't watch the LM, FLIGHT, we don't have the HIGH BIT RATE.
580458
FLIGHT
Okay, but from the voice.
580459
GUIDO
Okay. Roger.
580501
INCO
FLIGHT, INCO.
580501
FLIGHT
Go.
580502
INCO
We can get HIGH BIT RATE from the LM.
580506
FLIGHT
Does it cost me any power?
580508
INCO
No. We'd like for him to go to panel 12; we'd like to go FUNCTION switch to VOICE, and HIGH BIT RATE on PCM.
580515
FLIGHT
CAPCOM, got that?
580516
Maroon EECOM
INCO, EECOM. Meet me on number 1.
580517
CAPCOM
Say again, please?
580518
FLIGHT
They want to go to HIGH BIT RATE in the LM. Won't cost us any power. And they can tell a little more.
580541
CAPCOM
And, FLIGHT, we checking his arithmetic? On the -
580545
FLIGHT
GUIDANCE, arithmetic?
580547
GUIDO
Go, FLIGHT.
580548
FLIGHT
How's the arithmetic?
580551
GUIDO
Standby, we'll check it.
580557
Maroon EECOM
FLIGHT, EECOM.
580558
FLIGHT
Go.
580558
Maroon EECOM
If we can get LOW BIT RATE with the POWER AMPL off, let's turn the PRIMARY POWER AMPL off on the COMM system. There's no sense in -
580604
FLIGHT
INCO? Can we do that?
580605
INCO
Yes. Let's try it.
580607
FLIGHT
CSM POWER AMPL off?
580608
INCO
LOW BIT RATE. DOWN VOICE BACKUP.
580611
FLIGHT
You need him to do that?
580612
INCO
Yes.
580613
FLIGHT
Okay, CAPCOM. LOW BIT RATE. DOWN VOICE BACKUP, and POWER AMPL OFF in the CSM.
580620
CAPCOM
Okay.
580621
Maroon EECOM
INCO, EECOM. Meet me on number 1.
580626
TELMU
FLIGHT, TELMU.
580627
FLIGHT
Go.
580627
TELMU
We need to get the SUIT GAS DIVERTER to CABIN.
580630
FLIGHT
Yes.
580638
FLIGHT
CAPCOM, LM: SUIT GAS DIVERTER to CABIN.
580648
FLIGHT
GUIDANCE, how's that arithmetic?
580650
GUIDO
It looks good, FLIGHT.
  • Not nearly the snappy slide rule action seen in the film.
580652
FLIGHT
The arithmetic is go?
580653
GUIDO
Roger.
580654
FLIGHT
CAPCOM, the arithmetic's good.
580657
FLIGHT
Does that mean we've got an alignment now?
580700
GUIDO
A coarse align.
580701
Other GUIDO
We've got a coarse align, FLIGHT.
580702
FLIGHT
Okay. CAPCOM -
580710
FLIGHT
Okay.
580730
FLIGHT
As soon as we've got the alignment and we're finished with it we're going CMC OFF, IMU OFF, we'll leave the heater circuit breakers on and power them from - BATTERY A. Until you tell me whether we need to keep them up or not.
580743
CAPCOM
How come we're getting so much noise on the COMM?
  • Again, an important question.
580746
FLIGHT
Don't know. INCO?
580750
INCO
We'd like them to do a COMMAND RESET on the CSM so we can get the LOW BIT RATE.
  • An answer to a completely different question.
580756
FLIGHT
I thought we just told them that.
580758
INCO
We did, but the way the commands work and everything -
580801
FLIGHT
Alright. They're in the middle of it, I'll get it in a minute.
580804
INCO
Okay.
580858
FLIGHT
We're turning off some more of the instrumentation, gentlemen.
580902
FLIGHT
GUIDANCE, have they got the fine align down to where you want it, yet?
580905
GUIDO
FLIGHT, we need him to read the angles to us. We've lost CSM data; we don't know what the CSM got on the 06 20.
  • VERB 06 NOUN 20
580913
FLIGHT
Okay, you really need that, huh?
580914
GUIDO
Right.
580915
FLIGHT
CAPCOM, they need a VERB 06 NOUN 20 on the CSM. We lost it.
580926
FLIGHT
Here they are.
  • Turns out, Jim is already on it.
580948
GUIDO
Copy, FLIGHT.
580949
FLIGHT
Yup.
581006
FLIGHT
You got everything you need, GUIDANCE?
581011
EECOM
FLIGHT, EECOM.
581011
FLIGHT
Go.
581012
EECOM
We're ready to go ahead and power down the CMC now.
581015
FLIGHT
Wait a minute. I want to be sure the guidance is alright.
581017
EECOM
Okay.
581027
FLIGHT
GUIDANCE, can one of you tell me if you've got everything you need?
581030
GUIDO
FLIGHT, GUIDANCE, we got everything.
581034
Other GUIDO
We're working on it now, FLIGHT.
581035
FLIGHT
Now - my question really is: when can I turn the CMC off? Are we that far enough through the procedure that we can turn it off? Yes or no, that's all I'm -
581045
GUIDO
Roger, FLIGHT. We are, FLIGHT.
581046
FLIGHT
You are.
581047
GUIDO
Right.
581047
FLIGHT
Okay.
581048
INCO
FLIGHT, INCO.
581049
FLIGHT
Go.
581049
INCO
If you get us that COMMAND RESET we'll get some data; we're blank here.
581052
FLIGHT
Okay. Well - in the CSM, you mean?
581054
INCO
That's affirmative.
581055
FLIGHT
We're turning it down anyway, right now, Ed.
581058
FLIGHT
CONTROL and GUIDANCE, one more time. You've got everything you need through to fine align and we can proceed to power down the IMU in the CSM, correct?
581104
GUIDO
That's affirmative, FLIGHT.
581105
CONTROL
That's affirmative, FLIGHT.
581106
FLIGHT
Okay, and we'll leave the heaters on. Heater power circuit breaker on in the CSM.
581109
CONTROL
Check the LM LDG RDR heater breaker also.
581112
FLIGHT
Yeah. CAPCOM, for the CSM. We've got the fine align data and everything is set up so therefore we can start powering down the CMC and the IMU. For now leave the heater circuit breaker on, and the BATTERY A on the bus like it is. We're running that IMU heater to ground to see whether we need to leave that on or not. And here's the - paper -
581132
GNC
FLIGHT, GNC.
581133
EECOM
FLIGHT, EECOM.
581134
GNC
We got the go ahead to turn the heater power off.
581136
FLIGHT
Say again?
581136
GNC
IMU HEATER power to OFF.
581138
FLIGHT
And we'll still have it?
581139
GNC
That's right. We feel that we have a real good chance of bringing the platform up in good shape.
581143
FLIGHT
Now, do you want more time to debate it? I'm willing to give you 0.8 of an amp.
581146
GNC
I don't really know how much debate really needs to be done on that.
581150
EECOM
FLIGHT, EECOM. We need some data. We need to get the LOW BIT RATE - I think we need COMMAND RESET.
581156
FLIGHT
CS - CAPCOM, CSM COMMAND RESET, and then give them those instructions. We've got enough, we might as well save what we can on the battery now, and power down.
581205
CAPCOM
You want the CMC and IMU powered down?
581207
FLIGHT
Yeah.
CAPCOM
And heater circuit breaker -
581209
FLIGHT
Yeah.
CAPCOM
- heaters off. Off on the -
581210
FLIGHT
And all the heaters, etc.
581212
EECOM
And COMMAND RESET.
581213
FLIGHT
And COMMAND RESET before they -
581215
CAPCOM
And you want BAT A, huh?
581216
FLIGHT
Yeah.
581303
TELMU
FLIGHT, TELMU.
581304
FLIGHT
Go.
581305
TELMU
Okay, we've been watching glycol temps and I guess we'd better go ahead and crank up the water boiler. This is Activation 20 - - Activation -
581316
FLIGHT
Listen. Listen.
581317
TELMU
And Activation 21 step 3.
581335
FLIGHT
Do you want to leave BATTERY A on? EECOM? Is that still the story? For how long?
581339
EECOM
That's affirmative, FLIGHT.
581340
FLIGHT
How long will you want to do that?
581341
EECOM
Until we get squared away with the LM.
581342
Maroon EECOM
FLIGHT, EECOM.
581343
FLIGHT
Okay.
581343
Maroon EECOM
Let's get all RCS AUTOs OFF, the 16 plus the 2 FDAIs OFF.
  • Overlooked is that between turning the CMC, IMU, and RCS all off, the spacecraft loses all attitude maintenance as the LM systems are not yet fully activated.
581347
FLIGHT
Yeah. Got that, CAPCOM?
581351
Maroon EECOM
I'll get it to him.
581352
FLIGHT
Alright.
581403
FLIGHT
Yeah. Before we turn his thrusters off in the CSM, CAPCOM, you'd better verify they've got some control in the LM.
581410
CONTROL
FLIGHT -
581410
FLIGHT
Plus, they need to bring up the water boiler. Go ahead, calling, FLIGHT.
581414
CONTROL
This is CONTROL. You mentioned them powering up the RCS; is that right?
581419
FLIGHT
Well -
581421
CONTROL
We're going to have to do that.
581422
FLIGHT
Yeah, okay.
581428
INCO
CSM data - CSM data, FLIGHT
581437
EECOM
FLIGHT, EECOM.
581437
FLIGHT
Go ahead.
581438
EECOM
Heaters, fans, Oâ‚‚ TANK 1 off.
581441
FLIGHT
CAPCOM, all TANK 1 off.
581446
EECOM
FLIGHT, EECOM.
581446
FLIGHT
Go ahead.
581450
EECOM
Disregard, FLIGHT.
581451
FLIGHT
Yeah, have him go and get that stuff off.
581500
FLIGHT
Okay.
581508
FLIGHT
AUTO - all the AUTO RCS and the heaters in TANK 1.
581544
EECOM
FLIGHT, EECOM.
581544
FLIGHT
Go ahead.
581545
EECOM
They've got to get the power off as soon as they can.
581547
FLIGHT
Yeah. Well, we just handed it to the CAPCOM.
581604
TELMU
FLIGHT, TELMU.
581605
FLIGHT
Go.
581605
TELMU
Okay, did you copy we need to crank up the glycol loop?
581609
FLIGHT
Yeah -
581609
TELMU
Activation 20.
581611
FLIGHT
Activation 20?
581612
TELMU
Under glycol loop activation. And Activation 21 step 3.
581619
FLIGHT
Down to step 3 or step 3 only?
581620
TELMU
No. Step 3 only.
581621
FLIGHT
Activation 20 and Activation 21 step 3 only.
581624
TELMU
That's affirmative.
581625
FLIGHT
Okay.
581647
FLIGHT
20 amps.
581705
FLIGHT
CAPCOM, FLIGHT. For the LM, he needs to get his sublimator up -
581711
FLIGHT
Yeah.
581714
EECOM
FLIGHT, EECOM.
581714
FLIGHT
Jack, the LM needs to get the sublimator up. Activation 20, and 21. For 21, step 3 only. Go ahead, EECOM.
581721
EECOM
You can go ahead and get those Oâ‚‚ TANK 1 heaters off soon. That's a big chunk.
  • Of the 20 amps still being drawn.
581725
FLIGHT
Yeah, Oâ‚‚ -
581728
CAPCOM
You want Oâ‚‚ TANK heaters off -
581729
FLIGHT
Yeah.
581731
CAPCOM
Okay. And Activation 20 and 21 step 3.
581734
FLIGHT
Yup. Get the sublimator up.
581737
CONTROL
FLIGHT, CONTROL.
581738
FLIGHT
Go ahead.
581739
CONTROL
We need to get our RCS heaters on. Start those warming up. And get the RCS system pressurized, if we're going to be going out of CSM control here very shortly.
581750
FLIGHT
Yeah, we are.
581752
CONTROL
That needs to be taken care of before she goes.
581754
FLIGHT
Okay.
581800
TELMU
That's affirmative.
581824
FLIGHT
CAPCOM -
581824
EECOM
Oâ‚‚ TANK 1 heaters and fans.
581827
FLIGHT
Yeah. Oâ‚‚ TANK 1.
581832
FLIGHT
TANK 1.
581848
Maroon EECOM
FLIGHT, EECOM.
581849
FLIGHT
Go ahead - that was to the - that was for the CSM, that FDAI.
  • FLIGHT (incorrectly) thinks the crew misinterpreted the circuit breaker pull request as an instruction for the LM. In fact, the given abbreviated procedures never power up the LM FDAI in the first place.
581902
FLIGHT
And for the LM, CAPCOM, we need RCS heaters on, they need to pressurize the RCS to have control. And for the water sublimator, Activation 20 and 21 step 3.
581912
CAPCOM
Okay. I gave them 20 and 21 step 3 already -
581915
FLIGHT
Okay.
CAPCOM
- and you want RCS heaters on in -
581918
FLIGHT
Yeah, RCS pressurize - we didn't tell him to pull the FDAI in the LM.
581922
Maroon EECOM
No, that was the CSM.
581923
FLIGHT
Yeah. Does he understand that? Does that - Jim, does - has he -
581947
FLIGHT
CONTROL, do you want them to power the balls up and RCS?
581952
CONTROL
Definitely the RCS, FLIGHT.
581953
FLIGHT
Well, they need the ball to tell where they are.
581955
CONTROL
Roger.
581955
FLIGHT
CAPCOM, yeah, get a ball up in - one ball up and RCS heaters. And press.
  • Pressur[ize].
582000
CONTROL
And they need to have all of the circuit breakers in for the ISOL VALVES and the main SOVs, FLIGHT. On panels 11 and 16.
582008
FLIGHT
Okay.
582010
CAPCOM
Okay, in an orderly fashion, please. Ready. What you want, FLIGHT?
582015
FLIGHT
Okay, how's the CSM? Anything for the CSM?
582019
FLIGHT
EECOM?
582019
Maroon EECOM
FLIGHT, EECOM.
582020
FLIGHT
Go.
582020
Maroon EECOM
I think we're ready to power the main buses down. If everybody's ready.
582023
GUIDO
They don't have attitude control in the LM, FLIGHT.
582025
FLIGHT
Let's be sure we have control in the LM. Although he's probably out of jets right now. GNC, you got anything for the CSM?
582031
GNC
Negative, FLIGHT.
582032
FLIGHT
Okay, CAPCOM. For the LM, we think he ought to have an eight-ball, and we ought to get his RCS heaters on, his RCS pressurized, and he needs to get all his circuit breakers on 11 and 16 closed for control.
582044
CONTROL
Yeah, and Jack, what we're talking about is the QUAD HEATER breakers, the MAIN SOVs, and ISOL VALVE breakers on panels 11 and 16.
582053
CAPCOM
Don't you have an Activation page I can just tell them to turn to?
582056
CONTROL
Yeah, if you want to close all those dadgum breakers. On that page. And then he can go back and open them all up later, the ones he doesn't need. That's Activation 22 and 23.
582121
FLIGHT
EECOM, GNC, copy his question?
582124
EECOM
Negative, FLIGHT.
582127
FLIGHT
Jack wants to know how we wanted to proceed with the SCS. Go ahead, John.
582144
FLIGHT
CONTROL, FLIGHT, you giving us something for getting your RCS up?
582147
CONTROL
Yes sir, FLIGHT.
582148
FLIGHT
Hurry up, will you please?
582149
CONTROL
Yeah.
582150
FLIGHT
We've just got a lot of traffic for the CAPCOM, that's all.
582152
CONTROL
Roger
582216
GNC
Okay, FLIGHT, GNC. The CMC and the IMU are completely powered down at this time.
582220
FLIGHT
Okay.
582241
FLIGHT
Copy all that, CONTROL?
582242
CONTROL
FLIGHT, put the TCA breakers in last. The TCA breakers in last.
582248
FLIGHT
Okay. TCA breakers in last.
582306
FLIGHT
Yup. That works.
582307
CONTROL
Copy, FLIGHT.
582332
FLIGHT
Okay. CONTROL, do you understand the configuration we're getting into?
582336
CONTROL
Say again, FLIGHT?
582337
FLIGHT
Do you understand the configuration we're getting into?
582340
CONTROL
Right now, as I understand it, we're getting into a PGNS attitude control mode -
582344
FLIGHT
Okay -
CONTROL
- it'll be ATTITUDE HOLD.
582346
FLIGHT
Okay. My point is - let's be careful with what we're telling the CAPCOM to do here; try to give him as clear instructions by switches or Activation pages as we can, okay? Now -
582356
CONTROL
Okay, but the circuit breakers -
582357
FLIGHT
I know.
CONTROL
- are all botched together on these charts, FLIGHT -
582359
FLIGHT
I know. Okay, you're ready to power down the inverters, the BATTERY RELAY BUS, and you're ready to pull the entry battery off.
582406
Maroon EECOM
That's right. Now, that's not what gets him completely configured to do it, but I think we've got to get off entry battery and then do it with voice, FLIGHT. Through the LM. COMM. That's going to kill COMM and everything.
582415
FLIGHT
Yeah. You're ready to do that. Is everybody ready to kill COMM in the CSM? GNC?
582420
GNC
Go, FLIGHT.
582421
FLIGHT
You ready to kill COMM in the CSM?
582422
GNC
Roger, FLIGHT.
582423
FLIGHT
GNC. GUIDANCE?
582427
GUIDO
Go, FLIGHT.
582428
FLIGHT
We're going to turn down the CSM.
582430
GUIDO
Roger.
582435
FLIGHT
Yeah; I want to be sure we've got control somewhere. I'm not satisfied we do yet. Attitude control.
582448
CAPCOM
FLIGHT, CAPCOM.
582449
FLIGHT
Go ahead.
582450
CAPCOM
Okay. We haven't got ourselves into a position here where we have no attitude control in either vehicle, have we?
582456
FLIGHT
I'm waiting to see when we get attitude control in the LM. Would they - would you ask them to call us when they have attitude control in the LM, and then we'll power the inverters, et cetera down in the CSM?
582506
CONTROL
FLIGHT, CONTROL.
582507
FLIGHT
Go ahead.
582507
CONTROL
Okay, once they get control established, we're going to do some setup work as far as loading the DAP to get his -
582511
FLIGHT
Oh, yeah, yeah. Okay.
582514
FLIGHT
I just want to get attitude control first.
582516
CONTROL
Roger. He's had to put his PGNS MODE control switch to ATT HOLD.
582520
FLIGHT
Oh yeah. Okay.
582537
FLIGHT (off loop)
Say again?
582545
CAPCOM
Hey FLIGHT, they don't have attitude control in the - we don't have CM/SM -
582550
FLIGHT
Yeah. Okay. Well, they're trying to get it up, right?
582553
CAPCOM
Yeah, they are.
582554
FLIGHT (off loop)
Okay. I just - what you want to know - pardon -
582614
CONTROL
FLIGHT, CONTROL.
582615
FLIGHT
Go.
582615
CONTROL
We're getting pretty close into gimbal lock, as I understand it. We need to get that RCS pressurized and on the line -
582620
FLIGHT
Yeah, well, they're on the way of doing it.
582628
FLIGHT (off loop)
He didn't have a ball to do it with.
582630
CONTROL
He's got the DSKY, FLIGHT.
582634
FLIGHT
No - who he? CSM or the LM?
582636
GUIDO
The LM.
582639
GNC
FLIGHT, GNC.
582640
FLIGHT
Go ahead - wait a minute, GNC. Yeah, we're having a control problem. What's the best way to get it; are you saying the LM, CAPCOM?
582648
FLIGHT
Alright.
582651
GUIDO
He can go DIRECT RCS, FLIGHT.
582653
FLIGHT
CAPCOM, have him go DIRECT RCS and hold attitude in the CSM.
582736
TELMU
FLIGHT, TELMU.
582738
FLIGHT
Can you wait a minute?
582739
TELMU
We're going to have to have AC here, for this.
582742
FLIGHT
For what?
582743
TELMU
For the balls.
582744
FLIGHT
CAPCOM, they need AC.
582759
TELMU
Both of them go in, FLIGHT.
  • LOGIC POWER
582805
FLIGHT
Did you copy, TELMU?
582806
TELMU
Roger, his LOGIC POWER breakers should be in. A and B.
582809
FLIGHT
A and B LOGIC should be in.
582840
CONTROL
RCS is pressurized.
582841
FLIGHT
Alright.
582845
TELMU
Okay, FLIGHT, we've got a procedure here for the AC coming at you.
582858
FLIGHT
CAP - he needs AC for the eight-ball - CAPCOM. We need to get AC powered up in the LM. I'm sure they know the procedure, but there it is.
582920
FLIGHT
TELMU, FLIGHT.
582920
TELMU
Go, FLIGHT.
582921
FLIGHT
What's our current level in the LM?
582923
TELMU
41 amps.
582925
TELMU
Okay, FLIGHT, TELMU.
582929
TELMU
FLIGHT, TELMU.
582930
FLIGHT
Go.
582930
TELMU
We show him still armed. We'd ask him to go MASTER ARM off.
582934
FLIGHT
Okay.
582958
TELMU
Okay, we've got AC, FLIGHT. Looks good.
583002
FLIGHT
Okay.
583014
TELMU
We see the pyros are disarmed now, FLIGHT.
583017
FLIGHT
Okay.
583048
FLIGHT
TELMU - er, CONTROL?
583049
CONTROL
Go ahead. I copy.
583051
FLIGHT
Do you want him to do that?
583052
CONTROL
The checkout? There's no need for it, FLIGHT. All we need to do is -
583056
CAPCOM
He wants to know if you want him to go down Activation 37.
583059
CONTROL
Negative.
583101
FLIGHT
Is he - has he got control now?
583103
CONTROL
Negative, he does not. I don't think he has his TCA breakers in yet.
583106
FLIGHT
Okay. But what do you want him to do?
583108
CONTROL
I want to get his TCA breakers in after he's got everything else configured, and then he can be in - he'll be in PGNCS ATTITUDE HOLD.
583115
FLIGHT
Okay, there's no -
583116
CONTROL
5 degree deadband.
583131
FLIGHT
Anything needs to be done in the DAP?
583133
CONTROL
Yeah, we're going to have to load the DAP, FLIGHT.
  • This trickle of piecemeal this-then-that is why FLIGHT indicated a preference for the prewritten procedures.
583136
FLIGHT
Well, do we want to be in PGNCS ATTITUDE HOLD? Before we load it? Come on, now -
583142
CONTROL
We've got the TCAs in now, and everything looks real good right now, FLIGHT. We can load the DAP with no problem.
583145
FLIGHT
Okay, what numbers you want them to put to get it?
583147
CONTROL
DAP data load is for - this configuration is 30120.
583153
FLIGHT
30120.
583154
CONTROL
Right. And we'll have to give you some weights; we don't have those yet.
583203
FLIGHT
Approximately.
583214
FLIGHT
Do we need a weight to go in there?
583220
CAPCOM
What do we have on weight?
583221
CONTROL
CSM weight: 63400.
583223
FLIGHT
63400.
583224
CONTROL
That's CSM weight.
583225
FLIGHT
CSM.
583244
CAPCOM
Okay, are we ready to go to PGNCS ATTITUDE HOLD now?
583247
FLIGHT
CONTROL?
583248
CONTROL
Go ahead, FLIGHT.
583248
FLIGHT
You ready for PGNCS attitude control now?
583250
CONTROL
He's in P00 now, he - he's in ATTITUDE HOLD right now, FLIGHT.
583253
FLIGHT
Okay.
583257
CAPCOM
How about it?
583258
FLIGHT
Yeah.
583304
FLIGHT
Tell - be sure he tells Jack that.
583331
CONTROL
FLIGHT, CONTROL.
583332
FLIGHT
Go.
583333
CONTROL
Couldn't really copy - did he mention he was having a problem firing his jets?
583336
FLIGHT
I don't know. I didn't hear.
583339
FLIGHT
He's asking if he's firing.
583341
CONTROL
Need to - make sure his ATCA (PGNS) circuit breaker is in.
583347
CAPCOM
Okay, what other control circuit breakers do you want in?
583350
FLIGHT
If he's having trouble, check his ATCA (PGNS) circuit breaker.
583352
CONTROL
ATCA (PGNS) breaker on panel 11, row 3.
583359
CAPCOM
ATCA (PGNS) and what else?
583400
CONTROL
And the ATTITUDE DIRECT control breaker - he's got that if he's got DIRECT right now.
583432
FLIGHT
Okay. That must have been what it was.
583435
CONTROL
That should have it.
583443
CAPCOM
Okay, can we check the switch configuration circuit breakers and the black boxes to make sure everything's configured correctly for attitude control?
583449
FLIGHT
Yeah. I'd like to be sure the LM is okay while we power the CSM down, now.
583500
FLIGHT
Okay.
583500
CAPCOM
Okay - yeah, I heard him holler up the tunnel.
583502
FLIGHT
Yeah. CONTROL, are you okay?
583504
CONTROL
Yeah, we've got one TCP switch failure -
583506
FLIGHT
Okay. But are you okay?
583507
CONTROL
Well, we look okay now, and we'll need another DSKY entry here very shortly to inhibit our upward-firing jets.
583512
FLIGHT
Alright. TELMU, are you okay?
583515
TELMU
Roger, FLIGHT, we're doing pretty good. I've got to get with you in a little while on -
583518
FLIGHT
Okay.
TELMU
- high ASCENT Oâ‚‚ pressure.
583520
FLIGHT
Yeah, okay. GUIDANCE, you okay? We're good in the LM?
583522
GUIDO
We're good, FLIGHT.
583524
FLIGHT
Okay. GNC and EECOM. We're going to power down. You ready?
583527
GNC
We're ready, FLIGHT.
583527
EECOM
EECOM is go.
583536
CAPCOM
Okay, FLIGHT. They've got attitude control in the LM now. What do you want to do with the CSM?
583540
FLIGHT
Okay, here it is, right behind you, Jack. For powering it down. There's the paper.
583610
FLIGHT
EECOM, FLIGHT.
583612
EECOM
Go, FLIGHT.
583612
FLIGHT
Are there any switches you want in the off position before we power down? Like, for example, compressors or anything?
583617
Maroon EECOM
No, FLIGHT. Let's just power - this down, we'll fix it later -
583619
FLIGHT
Okay. Okay.
583754
FLIGHT
TELMU, FLIGHT.
583755
TELMU
Go, FLIGHT.
583755
CAPCOM
You want them to open-circuit fuel cell 2, right?
583758
Maroon EECOM
That's affirm, if he hasn't done it.
583801
TELMU
FLIGHT, TELMU.
583814
FLIGHT
CAPCOM, FLIGHT.
583816
CAPCOM
Go, FLIGHT.
583816
FLIGHT
We okay there with them? Right now?
583821
CAPCOM
Okay, open -
583827
Maroon EECOM
Just close the REAC valves, FLIGHT.
583830
FLIGHT
Just close them. Just close the REACs.
583852
NETWORK
FLIGHT, NETWORK.
583853
FLIGHT
Go.
583854
NETWORK
We lost both CPs. We'll be up in a minute.
583857
FLIGHT
Hurry up.
583859
FLIGHT
We just lost data in the building, gentlemen. It's the CPs. Standby.
583908
FLIGHT
TELMU, FLIGHT.
583910
TELMU
Go, FLIGHT.
583910
FLIGHT
My problem, next, when I get around to it with you guys, is going to be what configuration to power down to.
583917
TELMU
Roger.
583918
FLIGHT
At the present time I'm thinking I'd like to keep the LM IMU up through the burn -
  • The PC+2 burn around the far side of the Moon.
583927
FLIGHT
- we're up on the CPs. But that's about as far as I've thought it through. Everybody's running power profiles, and Jim McDivitt's people have those set of numbers right now.
583938
TELMU
Okay, FLIGHT, we're working on it.
583959
FLIGHT
EECOM, are you all the way down yet?
584003
EECOM
We think the inverter went off, FLIGHT. So he's in the process.
584006
FLIGHT
Alright.
584020
FLIGHT
Copy, CAPCOM. Thank you.
584035
FLIGHT
Okay, look, gentlemen -
584041
FLIGHT
We - good LM data? EECOM? TELMU.
584045
TELMU
That's affirmative, FLIGHT.
584046
NETWORK
- here it is.
584047
FLIGHT
Yeah, we have it.
584048
INCO
FLIGHT, INCO, we've got a problem.
584101
FLIGHT
We going to have good data here for a while?
584104
INCO
In and out, FLIGHT. We've got a different problem. By turning off the CSM, we end up without any good tracking data. There's no way we can get any tracking data. That LM data is biased because of the uplink shift, and data select cannot use that tracking data.
  • Normally, the telemetry signal contains a base frequency carrier signal whose doppler shift can be read to help track the spacecraft's position through a ranging system. But they had to shift that base frequency -
584119
INCO
Consequently, somewhere in here we're going to have to bring up some kind of tracking on the CSM again.
584125
FLIGHT
FDO, FLIGHT.
584126
FDO
Go, FLIGHT.
584126
FLIGHT
Would you figure that out?
584128
FDO
Roger.
FLIGHT
We're well clear now of the Moon, right?
584132
FDO
Roger that. As far as we can tell we are, FLIGHT.
584134
FLIGHT
And we need to - why can't we track this LM? Because of this LM interference - this IU interference -
  • - because the radios on the LM and the IU on the S-IVB boost stage (also on its way to the Moon) operated on very similar frequencies, which caused interference. Normally, the LM would not be powered up until the S-IVB was out of range (in this case, it would have impacted the Moon) so this would not be a problem.
584140
INCO
That's right, because we had to bias off the up frequency to change it down, making a bias in the data; that data's no good.
  • Ultimately, this frequency shift allows communication but precludes that tracking methodology.
584146
FLIGHT
Is it possible to go back to the original and just leave this - IU -
584149
INCO
We already tried it, FLIGHT. We tried -
584150
FLIGHT
Didn't work, huh?
INCO
- it already. Doesn't work.
584152
FLIGHT
Okay, Ed. Thank you.
  • If you want more background on this problem, this Honeysuckle Creek article starting about halfway down the page is an excellent, detailed account. The rest of it is also worth reading, generally speaking. As well, this article goes into some more of the technical specifics.
584155
FLIGHT
Mrrh. Okay.
584159
FLIGHT
Okay, everybody, look. We've got a number of long-range problems right now. We have the burn to do, which is at about 79 hours: 28 hours from now. And that's one business. We have to get the track up as we need it to take care of that burn. Hopefully we won't need to do too much with that, although I don't know how many amps that's going to take.
584218
FLIGHT
However, right now, I want to be sure that we get the whole situation stabilized with the LM and the CSM. We've got to start bringing the LM power down some, and get any non-required stuff off the line so we don't use up any of these amp-hours that we don't need to give away. And I want you to pay attention to the configuration we're currently in and get the people offline working on the longer-range problems, especially the lifeboat problems now associated with the LM.
584243
FLIGHT
You know, LiOH, etc.
584247
FLIGHT
Let's get all that figured. But right now I want the guys who are in the room to concentrate on keeping this thing right now going along all right, and watching it.
584257
FLIGHT
Alright.
584300
CAPCOM
FLIGHT, CAPCOM.
584301
FLIGHT
Go ahead.
584302
CAPCOM
Okay, are my gyro torquing angles still good?
584305
FLIGHT
GUIDANCE, are those gyro torques still good?
584307
GUIDO
Roger, FLIGHT.
584308
FLIGHT
And the crew wants those?
584309
GUIDO
Roger. We ought to go ahead and fine align that platform.
584311
FLIGHT
There you go, CAPCOM.
584313
CAPCOM
Okay, and on these - Fred asked the question, he'd like to pull some circuit breakers on displays and have us watch them; is he clear to do that?
584322
FLIGHT
CONTROL and TELMU.
584324
CONTROL
Go ahead, FLIGHT.
584324
FLIGHT
Do you have good data there, and we can pull the display circuit breakers in the cockpit?
584329
CONTROL
Roger, FLIGHT. Just about ready.
584330
FLIGHT
Okay. Yes, gentlemen.
584331
CAPCOM
Okay. I want you to tell me what circuit breakers to pull, and I want them - defined as to panel and so forth, just like we did in the TCP, so there's no misunderstanding there. Okay?
584343
FLIGHT
CONTROL?
584344
CONTROL
Yeah, we copy.
584345
FLIGHT
Once you get them, TELMU.
584421
CONTROL
That's Activation 40, FLIGHT.
584423
FLIGHT
Activation 40, Jack.
584529
CAPCOM
Okay, FLIGHT. Do you want them to proceed with IMU fine align as outlined on page 40?
584534
FLIGHT
GUIDANCE?
584534
GUIDO
Roger, FLIGHT. That's what we want them to do.
584536
FLIGHT
Affirm.
584550
FLIGHT
TELMU, FLIGHT. Did you come up with those circuit breaker labels?
584553
TELMU
FLIGHT, we're working on them right now.
584555
FLIGHT
What do you mean? Don't you know what the circuit breaker numbers - names are?
584558
TELMU
Yeah, there's a whole slew of them -
584600
FLIGHT
Oh, okay.
TELMU
- what we're going to do is just give you a page of them with -
584602
FLIGHT
Okay.
584603
TELMU
- breakers: open circled.
584605
CAPCOM
Okay, I'm looking for panel - system - breaker name.
584610
FLIGHT
Yeah, they're going to give you a picture of the panel with -
584611
TELMU
We're just going to give you a picture -
FLIGHT
- them circled -
TELMU
- with the breakers circled.
584615
CAPCOM
Beautiful.
584617
CAPCOM
Do it just like TCP at the Cape.
584624
FLIGHT
TELMU, FLIGHT.
584625
TELMU
Go, FLIGHT.
584626
FLIGHT
While you're doing that, have somebody else figuring out what we might take off here to save some current.
584632
TELMU
Okay.
584634
FLIGHT
CONTROL, same with you.
584635
CONTROL
Go ahead, FLIGHT.
584636
FLIGHT
Same with you - we're going to want to save some power here, so -
584639
CONTROL
Right. We're working on it.
584640
FLIGHT
Figure out some suggestions.
584729
FLIGHT
CAPCOM, FLIGHT.
584731
CAPCOM
Go, FLIGHT.
584731
FLIGHT
Jack, would you let me know the conclusion of whatever discussions you guys had about - alignments? When you get - come to one?
584738
CAPCOM
Yessir.
584739
FLIGHT
Thank you.
584740
FLIGHT (off loop)
Okay. I'll wait until you -
584921
RECOVERY
FLIGHT, RECOVERY. Did you call?
584923
FLIGHT
No.
585038
GUIDO
FLIGHT, GUIDANCE.
585039
FLIGHT
Go.
585039
GUIDO
Okay, we'd like to have an E-MOD DUMP for the LM, FLIGHT.
585042
FLIGHT
Okay.
585043
GUIDO
And we're ready for it at the site.
585045
FLIGHT
Okay. We'll let - give them a little while, here.
585048
TELMU
FLIGHT, TELMU.
585049
FLIGHT
Go ahead.
585049
TELMU
Okay, we're tracking a little problem here on ASCENT Oâ‚‚ TANK 2 -
585052
FLIGHT
GUIDANCE, remind me of that in a little bit.
585054
GUIDO
Okay.
585054
FLIGHT
ASCENT TANK 2, what is -
585056
TELMU
The pressure is up higher than it should be, what we need to do is open ASCENT -
585103
FLIGHT
Before you go through the valves, what are you trying to accomplish?
585106
TELMU
We're trying to use the ASCENT TANK 2 pressure instead of the DESCENT tank.
585110
FLIGHT
Is it close to venting?
  • Most of the tanks had a rupture disc that would blow out at a high pressure, in a way that would be more controlled than the tank bursting entirely.
585113
TELMU
No, it doesn't - it's not venting, now.
585116
FLIGHT
Is it close to venting?
585118
TELMU
It can't vent -
585119
FLIGHT
Yeah, okay.
TELMU
- unless it's broken.
585121
TELMU
And it's not broken. Okay, what we're trying to do is relieve the pressure in that tank, so we want to close the DESCENT Oâ‚‚ TANK VALVE and open ASCENT Oâ‚‚ TANK 2.
585137
FLIGHT
Oâ‚‚, tank 2 - how high is it?
585139
TELMU
It's up to 901.
  • psi.
585140
FLIGHT
What's it at normally?
585142
TELMU
Around 830.
585143
FLIGHT
And you just want to use some of that and then we'll go back -
585146
TELMU
That's right.
FLIGHT
- to normal configuration, huh?
585153
FLIGHT
Okay. Got that, Jack?
585157
CAPCOM
Okay -
585158
FLIGHT
TANK 2 looks a little high, so they want to use some of it.
585201
CAPCOM
Okay. I got that.
585203
FLIGHT
ASCENT TANK 2 -
585203
CAPCOM
Close the DESCENT Oâ‚‚ and open ASCENT -
585206
FLIGHT
Oâ‚‚ tank number 2.
585208
CAPCOM
Number 2; right.
585229
FLIGHT
TELMU, FLIGHT.
585230
TELMU
Go ahead, FLIGHT.
585231
FLIGHT
Is it a good idea to close the DESCENT Oâ‚‚ VALVE now?
585234
TELMU
Yeah, it's okay.
585240
TELMU
He had to go that way, FLIGHT.
585242
FLIGHT
Yeah, I know that, but I'm worried about it coming back open.
585256
TELMU
Okay, we copy.
585304
CONTROL
FLIGHT, CONTROL.
585305
FLIGHT
Go.
585307
CONTROL
FAO pointed out here - we are drifting around here on this middle gimbal angle - he's in MIN IMPULSE right now, and I'm assuming that's where he wants to be, but if he doesn't watch it close he can get himself into gimbal lock again real easy.
585322
CONTROL
He's not in an automatic ATTITUDE HOLD mode right now, he's in a drifting flight mode.
585327
FLIGHT
Yeah. He may be looking for stars, that may be -
585329
CONTROL
Okay, but it might be worth a confirmation - okay, he knows that he's in there because he's hitting the ACA right now. Okay.
585336
FLIGHT
Okay. How's he doing on the middle gimbal?
585339
CONTROL
Okay.
585341
FLIGHT
Alright. Is he away from it?
585343
CONTROL
Yes.
585343
FLIGHT
Okay. Well, keep your eye on it, Hal. That's good.
585345
CONTROL
Okay.
585347
FLIGHT
Just sing out if you think he's getting close and we'll pass it up.
585349
CONTROL
Roger.
585355
CONTROL
FLIGHT, CONTROL.
585356
FLIGHT
Go.
585357
CONTROL
If you get a minute, I've got one little item here.
585359
FLIGHT
Okay. How many amps are we taking out there - standby.
585424
FLIGHT
Okay.
585602
FLIGHT
CONTROL, did you have something for me?
585603
CONTROL
Yes, sir. When we pressurized the RCS here, we noticed we got some - about a 5 psi or so change in the ASCENT OX and FUEL tank pressures - an increase, okay? We noticed that shortly thereafter. And what we'd like to do is to make sure they've got the ASCENT FEED VALVEs actually seated in the closed position. And when they get time, it'll - close two circuit breakers and cycle the switches for us to the closed position to make sure they are closed.
585634
FLIGHT
Would you write down the procedure and -
585636
CONTROL
Roger.
FLIGHT
Bring it over, please.
585637
CONTROL
Okay.
585640
FLIGHT
They're talking about display circuit breakers right now. We'll let that get settled.
585645
CAPCOM
They're having to go up and look up some data books, but how about stowage-wise, FLIGHT? Do we have to worry about passing some gear back and forth? Maybe FAO ought to think about that.
585658
FLIGHT
Bob? FAO? You got people working on that?
585701
FAO
Say again, FLIGHT. Working on what?
585703
FLIGHT
Stowage - what might want to get passed to the LM? Or from the LM to the CSM?
585708
FAO
Okay. We'll have it.
585755
FAO
FLIGHT, I've got -
585810
CAPCOM
FLIGHT, CAPCOM.
585812
FLIGHT
Go ahead.
585813
CAPCOM
Okay, I have this abort PAD, and I've got some gimbal trim angles. Pitch and roll are - are these the ones that were preset, or are we going to have to jimmy these around?
585823
FLIGHT
The preset ones probably were from docked. But let me check. RETRO?
585832
FLIGHT
RETRO?
585833
FLIGHT
FLIGHT.
585835
RETRO
Go ahead, FLIGHT.
585836
FLIGHT
These LM DPS trims, are they different than the ones in the vehicle right now?
585841
RETRO
That's affirm. This is based on -
585843
FLIGHT
Docked burn?
RETRO
- docked burn.
585844
FLIGHT
And the ones they have on board are undocked, right?
585846
RETRO
That's affirm. For PDI.
585848
FLIGHT
Okay.
585848
CONTROL
FLIGHT, CONTROL. We've got some updates on those trims.
585850
FLIGHT
Oh. Okay. Well, come on in with them.
585854
CONTROL
Okay, I can give them to you right now.
585856
CAPCOM
This is a coordination problem on these gimbal angles and I guess we're going to have to think of a procedure to coordinate the setting of those angles.
585907
GUIDO
FLIGHT, GUIDANCE.
585909
FLIGHT
CAPCOM, you talking to me? I don't know what you mean -
585910
CAPCOM
That's affirm.
FLIGHT
- which gimbal angles?
585912
CAPCOM
The DPS trim angles.
585914
FLIGHT
Yeah.
585915
CAPCOM
Okay, they can't - they can't read them out on board - set them on board. They have to run them and then have us verify down on the ground. Right?
585925
FLIGHT
Yeah, well we can watch them trim it. I'm not sure I know what you're asking me, Jack.
585930
CAPCOM
We're going to have to, say - tweak it a little more and then we're going to have to, say -
585934
FLIGHT
No, they can trim it automatically, then load it. And run it through the program.
585938
CAPCOM
But we have to verify because there's a different time that -
585940
FLIGHT
Oh yeah. Yeah, we can verify the number.
585942
CAPCOM
Okay.
585943
FLIGHT
And we're getting some new ones, so hold up on those - GUIDANCE, you calling me?
585946
GUIDO
Roger. The middle gimbal angle's getting big, FLIGHT.
585949
FLIGHT
Getting close?
  • To gimbal lock.
585950
GUIDO
About 60 degrees.
585951
FLIGHT
CAPCOM, have him watch his gimbal angle.
585954
CAPCOM
Okay, I think I hear him doing that. What do you want him to do, just -
585957
FLIGHT
Well, in case he hadn't noticed, it's getting close.
590120
FLIGHT
Could I get the people in the room to be quiet?
590123
FLIGHT
CAPCOM's talking.
590132
TELMU
CAPCOM -
590134
FLIGHT
Standby, CAPCOM. Hey TELMU, he's talking.
590138
CAPCOM
We have any on panel 16?
590254
FLIGHT
CONTROL, FLIGHT.
590255
CONTROL
Go ahead, FLIGHT.
590256
FLIGHT
Hope you've got somebody working on a PTC procedure.
590259
CONTROL
Right. We have one already worked out, but it's an AGS-type procedure, FLIGHT.
590302
FLIGHT
That's okay.
590306
FLIGHT
I say that, I'm not sure if I mean that - but okay.
590312
CAPCOM
Got some angles?
590314
TELMU
FLIGHT, TELMU.
590314
FLIGHT
Go.
590315
TELMU
The CAPCOM read up the circuit breakers to open on panel 11; I don't believe he turned the page over. There's some on Panel 16 also.
590324
FLIGHT
Just a minute, TELMU. RETRO and CONTROL, FLIGHT. The COAS angles you have N/A, are they not - are they not available?
590333
FLIGHT
RETRO, FLIGHT.
590335
RETRO
Go, FLIGHT.
590335
FLIGHT
What does this N/A mean? For the COAS?
590339
RETRO
GUIDO said it was not available.
590343
FLIGHT
What do you mean, not available?
590344
RETRO
Not - not applicable. He said not available.
590350
RETRO
You might talk with GUIDO if you want more verification on that.
590353
FLIGHT
GUIDANCE?
590359
FLIGHT
GUIDANCE, FLIGHT.
590400
GUIDO
Go, FLIGHT.
590400
FLIGHT
Don't you want to add a COAS star to this PC+2? The CAPCOM asked why not.
  • Perhaps he did so off-loop.
590412
GUIDO
FLIGHT, we'd have to know which axis that thing's mounted along right now.
590416
FLIGHT
Okay. You don't have enough data to figure that out, is that right, right now?
590420
GUIDO
Well, I don't know if he's got it mounted along the Z-axis or the X-axis, FLIGHT.
590423
FLIGHT
Okay. That's what I'm saying. Okay.
590432
FLIGHT
TELMU, write down what you want us to do, please, on the circuit breaker - I didn't hear you last time.
590438
TELMU
The CAPCOM only read one side of that circuit breaker opening - we gave him a sheet, there's circuit breakers on panel 11 and 16 to open.
590447
FLIGHT
Okay.
590448
TELMU
He only read up one side.
590449
FLIGHT
He only read up panel 11?
590450
TELMU
Yes.
590451
FLIGHT
Okay.
590452
GUIDO
FLIGHT, GUIDANCE.
590453
FLIGHT
Go ahead.
590453
GUIDO
We can go ahead and compute one for along the Z-axis and if it's not mounted there he can move it and mount the COAS over on the Z-axis.
590500
FLIGHT
Okay. Go ahead.
590500
GUIDO
Okay. We'll do that.
590553
FLIGHT
CONTROL, FLIGHT. You copying that?
590554
CONTROL
Go ahead -
590556
CONTROL
Just caught the tail end of it.
590558
FLIGHT
Do you see any venting anywhere?
590602
CONTROL
Negative. We've got a lot of drops in and out of data.
590607
FLIGHT
Okay. He's having some difficulty with it, so look for reasons why.
590610
CONTROL
Roger.
590630
FLIGHT
It's 133 hours. To the AOL, to the Atlantic.
  • In the end, it would be closer to 143 hours.
590635
FLIGHT
You might let them know we're copying the VOX, too, Jack.
590732
FLIGHT
GUIDANCE, FLIGHT.
590733
GUIDO
We have a load, FLIGHT, but INCO says we can't COMMAND.
590737
FLIGHT
Why not? INCO?
590739
INCO
We can COMMAND if we go to LOW BIT RATE.
590742
FLIGHT
Let's give them the numbers, then they'll punch in, Jack.
590744
INCO
Sorry?
590745
FLIGHT
Let's just give them the numbers to punch in.
590747
GUIDO
We'll read it up to him, FLIGHT.
590748
FLIGHT
Yeah.
590838
CONTROL
FLIGHT, CONTROL.
590839
FLIGHT
Go.
590840
CONTROL
Okay, I've got this list of stuff here for this ascent feed.
590843
FLIGHT
Okay. Bring it over please. Have somebody hand it on.
590851
CAPCOM
And FLIGHT, did we come up with something with regards to his - uplinking a time?
590857
FLIGHT
We'll have trouble uplinking the time. We'd have to go to LOW BIT RATE - can he easily punch it in the DSKY there, GUIDANCE?
590902
PROCEDURES
FLIGHT, PROCEDURES.
590903
FLIGHT
Go ahead.
590904
PROCEDURES
Okay, stand by on that. We're trying an uplink mode that might give us COMMAND -
590906
FLIGHT
Okay.
PROCEDURES
- and VOICE and HIGH BIT RATE.
590908
FLIGHT
Alright.
590909
FLIGHT
CAPCOM, FLIGHT.
590910
CAPCOM
Go.
590911
FLIGHT
For your information, the problem is that we've had to deviate some of the frequencies because of the proximity of the IU frequency, and that thing's still alive. Copy?
590920
CAPCOM
Okay.
590921
FLIGHT
And that's - so it's a little bit nonstandard in that regard.
590925
CAPCOM
Okay.
590926
FLIGHT
But they're seeing what they can do. Why don't you give them a GET hack, though, eh? And let them know we're reading that VOX.
590940
PROCEDURES
FLIGHT, PROCEDURES.
590941
FLIGHT
Go ahead.
590942
PROCEDURES
Roger. We're on a COMMAND UPLINK mode along with VOICE, and we've got HIGH BIT RATE data.
590946
FLIGHT
Okay. P00 and DATA and we can give him a time - wait a minute. GUIDANCE, you ready to give them a time?
590950
GUIDO
Roger, FLIGHT. We've got the LOAD.
590951
FLIGHT
Okay.
590955
FLIGHT
We're ready to go, Jack.
590959
INCO
FLIGHT, INCO.
591000
FLIGHT
Go ahead.
591001
INCO
He's got his UPDATA LINK OFF.
591015
FLIGHT
CAPCOM.
591024
GUIDO
FLIGHT, GUIDANCE. We've got the LOAD to go ahead and do it now.
591026
INCO
FLIGHT, INCO.
591027
FLIGHT
Yeah, I know. We've got another problem. Go ahead, INCO.
591029
INCO
I think it would be better if we go to FORWARD OMNI on the LM now. This uplink.
591042
FLIGHT
You want FORWARD OMNI?
591043
INCO
Roger.
591049
FLIGHT
CAPCOM, FLIGHT.
591051
INCO
Hurry.
591054
FLIGHT
CAPCOM, you need to - going to need to get FORWARD OMNI in the LM.
591059
INCO
I believe he's already done it, FLIGHT.
591101
FLIGHT
Okay. Oh, it's already done. Hm. Okay.
591104
CAPCOM
Okay, and he's going to write a mission time into the LGC.
591114
FLIGHT
Can you do this when you don't have a DSKY? Time?
591127
FLIGHT
That'll give him his clock, will it, RETRO?
591131
RETRO
That's affirmative.
591132
FLIGHT
Okay.
591132
CONTROL
FLIGHT, CONTROL.
591133
FLIGHT
Go ahead.
591134
CONTROL
Okay, if he wants to turn his inverters off, we can monitor his middle gimbal angle here for him. One other suggestion I have is that he -
591140
FLIGHT
Wait, wait a minute. Let me - let me hear the COMM, here.
591244
RETRO
FLIGHT, RETRO. They've got a good clock update.
591246
FLIGHT
Okay.
591253
INCO
FLIGHT, INCO.
591254
FLIGHT
Go ahead.
591255
INCO
When we get a chance here, we'd like to take and change our offset on the two vehicles, on how we're getting telemetry, to try to solve this tracking problem. To do that we're going to have to drop the LM uplink and break lock for maybe 5 to 10, 20 seconds, there.
  • INCO and his team want to move the S-IVB IU frequency below the LM frequency to solve the tracking problem. The frequencies could be changed by dragging them with a emitted signal from the ground once the link was locked in. But if the signals dragged across each other, both vehicles would snap together and become inseparable. Because the S-IVB link couldn't be restarted remotely, the LM would have to discontinue their link while the other signal passed through its range.
591309
FLIGHT
Okay. Well, let's just standby on that a minute.
591310
INCO
Okay.
591316
FLIGHT
Okay. Now, before we get into that one -
591325
GUIDO
FLIGHT, GUIDANCE.
591326
FLIGHT
Go ahead.
591327
GUIDO
We'd like to have a VERB 74 some time when they can skip the DSKY.
591330
FLIGHT
Okay, GUIDANCE. CAPCOM, we're ready for an E-MEMORY dump. They'll give us a VERB 74, that's what you're talking about, isn't it, GUIDANCE?
591337
GUIDO
Roger, FLIGHT.
591338
FLIGHT
We're getting an E-MEMORY dump.
591349
FLIGHT
CONTROL, FLIGHT. You saw an increase in the ascent tanks, is that right? Pressure?
591353
CONTROL
Yes.
591353
FLIGHT
And you want to be sure, what, that the ascent feeds are closed -
591356
CONTROL
Yeah. Close those breakers and cycle those valves closed. Do not cycle to the open position, just to the close position.
591403
CAPCOM (off loop)
- when he pressurized the -
591403
FLIGHT
Yeah, RCS. And we want to do an E-MEMORY dump whenever they can get around to it, we're all ready to receive it.
591410
CONTROL
Okay, I've got one item, FLIGHT.
591413
FLIGHT
Say again?
591413
CONTROL
This is CONTROL. We want to power down his inverters -
591419
CAPCOM
Coming at you.
CONTROL
- and in order to do that, we're going to have to look at his middle gimbal angle for him on the ground. And to make it easier, he needs to get out of this MIN IMPULSE mode. He needs to go to - PGNS MODE CONTROL to AUTO when he gets to an attitude that he likes.
591433
FLIGHT
That's - yeah. Okay.
591436
FLIGHT
But now, wait a minute. Before we do any of that, I want to hear what it is control configuration we're going to be in, and whether we can keep the PGNS up or whether we're going to bring the AGS up, etc.
591448
CONTROL
Okay.
591449
FLIGHT
I want to get the holes dug before we start doing more things to this.
591452
CONTROL
Roger.
591454
FLIGHT
Let me see if - have you heard that one of the suggestions is to align the AGS to the PGNS, power the PGNS down, use the AGS, and then bring the PGNS back up and do a P52 for the burn?
  • The AGS was limited but sufficient for maintaining the platform and generated less heat (and thus used less coolant) than the PGNS.
591507
CONTROL
That's right, FLIGHT.
591508
FLIGHT
Okay. Well, I'd like to get that whole complex of control modes and what we're going to do in currents sorted out before we do start changing things.
591515
CONTROL
Okay.
591516
FLIGHT
Or we'll be doing this all night. Okay, Hal?
591519
CONTROL
Roger.
591520
FLIGHT
And I'm open to any suggestions here as to what the reasonable course of action - the last I heard from -
591528
FLIGHT
- staff is that they're going to try to run that again in the simulator, I believe.
591532
CONTROL
Okay.
591620
PROCEDURES
FLIGHT, PROCEDURES.
591621
FLIGHT
Go ahead.
591622
PROCEDURES
Roger, we're going to have to write a RESTART. 10 second loss of data.
591625
FLIGHT
Okay, everybody. Stand by for 10 second loss of data.
591703
FLIGHT
- yeah. CONTROL, FLIGHT.
591705
FLIGHT
Hal? CONTROL, FLIGHT.
591709
CONTROL
Go ahead, FLIGHT.
591710
FLIGHT
Hal, Tom Stafford's coming over. Would you chat with him about this thing?
591714
CONTROL
On the - PGNS/AGS?
591716
FLIGHT
Yeah.
591716
CONTROL
Roger.
591717
GUIDO
FLIGHT, GUIDANCE.
591718
FLIGHT
Go ahead.
591719
GUIDO
We got a good E-MOD, FLIGHT.
591720
FLIGHT
Okay, CAPCOM. We got a good E-MOD. Do they need to terminate anything, GUIDANCE, or does it terminate?
591726
GUIDO
No, it terminates.
591727
FLIGHT
Okay.
591814
FLIGHT
And that's the Atlantic, too, Jack, for their info. That's the Atlantic.
591833
FLIGHT
Yeah - we haven't made our mind we want to go there, but that's the PAD - that's the abort data he has in board.
591844
FLIGHT
It's the minimum return.
591849
FLIGHT
Yeah.
591856
GUIDO
FLIGHT, GUIDANCE.
591857
FLIGHT
Go ahead.
591858
GUIDO
We'd like to send him a REFSMMAT sometime, FLIGHT. If he gives P00 and ACCEPT.
591903
FLIGHT
What kind of REFSMMAT?
591904
GUIDO
It's the one that they're aligned to. They were carrying one pre - prelaunch, and it's not the one that they're aligned to right now. We're going to give them the right matrix.
591915
FLIGHT
Okay, and then what does he do? Align to it?
591917
GUIDO
No, no. He's fine. We just need to get it in there.
591921
FLIGHT
Oh, so he has it on board?
591922
GUIDO
Right.
591925
FLIGHT
Okay. Okay, CAPCOM - are you ready to do that now?
591928
GUIDO
Roger, FLIGHT.
591928
FLIGHT
Do you want to send them a state vector, too, by the way?
591930
GUIDO
Negative, FLIGHT. We want to hold off on that.
591932
FLIGHT
Okay.
591932
GUIDO
I'm not sure what the LM will do with it. We're having MIT run the hybrid, and see what it would do with this kind of -
591937
FLIGHT
Oh, that's right, because it doesn't navigate out here.
  • Away from the moon.
591939
GUIDO
That's right. So, we're having them run it on the hybrid, and check it out -
591942
FLIGHT
The REFSMMAT - I'm not - GUIDANCE, say one more time why you want them to have a REFSMMAT, because he doesn't have one -
591948
GUIDO
He doesn't have the one he's aligned to right now, FLIGHT -
591950
FLIGHT
Okay.
GUIDO
- he aligned to the PTC and he was carrying another one.
591952
FLIGHT
Okay.
591955
FLIGHT
Yeah. We want him to have the one he's aligned to.
591957
GUIDO
And we're also going to stick a T-ephem in, FLIGHT.
592003
CAPCOM
Alright, you want P00 and DATA now? You ready to go?
592004
GUIDO
That's affirm. We're ready.
592032
FLIGHT
Go ahead, GUIDANCE.
592033
GUIDO
Roger, FLIGHT. We're picking up.
592052
INCO
FLIGHT, INCO.
592053
FLIGHT
Go.
592053
INCO
Can we try that procedure now?
592058
FLIGHT
Just a minute, Ed. Let me see what else is cooking, I don't have any -
592100
GUIDO
FLIGHT, GUIDANCE.
FLIGHT
- reason why not to. Go ahead, GUIDANCE.
592103
GUIDO
We don't have the DUA. He gave us P00, but he didn't give us the DUA.
592109
FLIGHT
Okay, we need the DATA position, right?
592111
INCO
Roger.
592112
GUIDO
Roger.
592112
FLIGHT
CAPCOM. CAPCOM, FLIGHT.
592116
CAPCOM
Go, FLIGHT.
592116
FLIGHT
We got Program 00 but he needs to go to DATA first to get the load in.
592129
FLIGHT
Okay. We're loading the REFSMMAT -
592138
INCO
That's probably what it is, FLIGHT.
592139
FLIGHT
Okay.
592142
FLIGHT (off loop)
Yeah, they'll have to.
592150
INCO
We've got it, FLIGHT.
592151
FLIGHT
Okay.
592152
GUIDO
We're picking up, FLIGHT.
592157
FLIGHT
Okay. We're loading the REFSMMAT. We've got the VERB 74. CONTROL, FLIGHT, did you see him cycle the valves on the ascent feed?
592205
CONTROL
Go ahead, FLIGHT.
592206
FLIGHT
Did he cycle the valves on the ascent feed? Jack says he did it.
592209
CONTROL
Okay, we can't see that he did it, FLIGHT, on TM.
592211
FLIGHT
Okay, but he did do it.
592212
CONTROL
Okay, fine, thank you.
592214
FLIGHT
Okay. He cycled the ascent feeds - -
592221
FLIGHT
Okay, now, we're working on what we're going to do with the configuration. We need to get some kind of PTC going for us here, and we need to decide what we want to do with our control configuration - you're working all that, huh, CONTROL?
592232
CONTROL
Trying my best to, FLIGHT.
592233
FLIGHT
Okay.
592236
INCO
FLIGHT, INCO. We're coming up on AFT OMNI for the LM.
592239
FLIGHT
Do you want us to switch now?
592240
INCO
Right.
592241
FLIGHT
We're right in the middle of a load.
592242
INCO
Okay, we'll - hold as long as we can.
592247
INCO
He got it pretty quick on there anyway.
592739
GUIDO
FLIGHT, GUIDANCE.
592740
FLIGHT
Go.
592740
GUIDO
We're through COMMANDing to the LM.
592742
FLIGHT
Through COMMANDing, CAPCOM.
592746
TELMU
FLIGHT, TELMU.
592747
FLIGHT
Go.
592748
TELMU
I'd like to go ahead and get that DUA off the line.
592750
FLIGHT
Okay. We're through COMMANDing, CAPCOM, and they can take that circuit breaker - the DUA circuit breaker out again.
592755
TELMU
And FLIGHT, TELMU.
592756
FLIGHT
Go.
592758
TELMU
We'd like to get as much gear off here as we can. We'd like for you to think about turning this inverter off.
592805
FLIGHT
Again, here? Which inverter?
592807
TELMU
The LM inverter. Inverter 2.
592809
FLIGHT
It's running the eight-ball. Yeah, I need to tie that together with how we're going to fly this thing, Merlin - I'm waiting to get this whole thing.
592817
TELMU
Understand, but -
592818
FLIGHT
I understand what you're saying.
592819
TELMU
Okay.
592820
FLIGHT
How many amps are we taking with that?
592822
TELMU
Well, we're pulling about 2 amps.
592824
FLIGHT
Okay.
592825
TELMU
Every little bit helps.
592826
FLIGHT
Well, I know. I agree with you.
592829
TELMU
Let me get -
592829
FLIGHT
Let me - ah, okay.
592832
TELMU
The water rate right now, we're pulling about 7 pounds per hour. And at current capabilities, about 34 hours. Descent water.
  • Water/glycol coolant.
592842
FLIGHT
Say again?
592842
TELMU
About 34 hours on the descent water at the present rate.
592852
FLIGHT
Oh, okay. Okay, but we should be able to take the PGNS and and the IMU off -
592855
TELMU
That's right.
FLIGHT
- at some point.
592910
FLIGHT
Okay. I'd like to get everybody up here a minute. RETRO, GUIDANCE, CONTROL, TELMU, GNC and EECOM, and CAPCOM. INCO and FAO. Is everybody on the loop, give me an amber, please.
  • Each controller had a little status light they could toggle at request; these were used for go/no go callouts, for example.
592925
FLIGHT
RETRO, you up?
592929
FLIGHT
GUIDANCE, get a RETRO up in the loop, will you please?
592930
RETRO
Go ahead.
592932
FLIGHT
Look. As I see it, we've got a number of things to do. No big hurry right now. We've gotta maintain COMM here, of course, with the LM. But we need to see what we need to do about setting up a PTC attitude and an arrange - a control mode. And what that means relative to the AGS and the PGNS configuration as to powering the AGS down, etc. Now, CONTROL, you're working that problem, right?
592957
CONTROL
Roger.
593003
FLIGHT
And I'm proceeding now just staying put until we get that whole story put together - and how long is it going to take you, do you think, to come to some conclusion on that, Hal?
593012
CONTROL
I don't have an estimate right now, FLIGHT. We're trying to get it to you as soon as -
593015
FLIGHT
About an hour?
593016
CONTROL
Yeah.
593017
FLIGHT
Alright. Now, so - so we'll just standby on that. We are interested, though, in this also from the point of view of the power configuration. TELMU, I assume you're working out all the consumable options, and as soon as CONTROL's got a mode here you're going to be able to lay out a power profile to tell us where we stand on all your Oâ‚‚, and your water, and your power, right?
593041
TELMU
Wilco.
593042
FLIGHT
But can you say something generally, now? Generally, we can come all the way home at 25 amps, right? On the LM?
593050
TELMU
Not with this water usage right now, FLIGHT.
  • Again, water/glycol coolant.
593053
FLIGHT
No, but if we go down to 25 amps all of that will help us, won't it?
593058
FLIGHT
Oh, I see what you're saying. 25 amps - not much.
593100
TELMU
Yeah, that's not going to help us that much, FLIGHT.
593103
FLIGHT
Okay. Well, what do we have to get down to? For example?
593110
TELMU
Standby - I would think about 15 amps or so.
593112
FLIGHT
From the point of view of the water then we've got to get down that low -
593114
TELMU
Yeah. About 15, I think.
593117
FLIGHT
Can we do that? In a life support/COMM mode?
593120
TELMU
Say again, FLIGHT?
593121
FLIGHT
We could be at 15 amps in a life support/COMM mode, could we not?
593124
TELMU
That's affirmative.
593125
FLIGHT
Alright. Now, we need to figure out something also for your COâ‚‚ scrubbing, right?
593129
TELMU
Right.
593130
FLIGHT
And - and EECOM needs to know how he's going to do that over in his vehicle if we have to get into that. I've got a note up here that I don't quite understand, it says LM LiOH is 48 man-hours. That doesn't sound quite right to me.
593145
TELMU
That's on the cartridge - standby, we'll get you consumables.
593150
FLIGHT
Alright. But TELMU, I'd like some people to start running consumable profiles out, making a couple of different assumptions and not standing by, waiting for everything - and please have somebody run it out grossly, you know, so that we continue to have at least a story even though it's not the most accurate one; you can continue to refine it as you go along.
593209
TELMU
Roger.
593209
FLIGHT
I'd like to relatively soon here get some idea how we stand and what we're - boxes we're running into and when we've got to start deciding things, okay?
593217
TELMU
Wilco.
593219
FLIGHT
Okay, does anybody have anything else besides those areas that they want to bring to our attention right now?
593226
INCO
INC - FLIGHT, INCO.
593227
FLIGHT
Yes. INCO.
593228
INCO
If we can get that change done, where we get some tracking data for FDO, we'd hope. If you'll let us drop the uplink and the downlink from the LM for about 25 seconds.
593237
FLIGHT
And then re-establish it?
593239
INCO
Right.
593241
FLIGHT
Okay.
593241
INCO
We'd like you to alert the crew that they're not going to have contact for a few seconds.
593244
FLIGHT
Okay. Let me go around, Ed, and then we'll pick that up. Does anybody have anything else? Let me go around the room. Trench - RETRO? FDO? GUIDANCE?
593254
GUIDO
Negative, FLIGHT.
593254
FLIGHT
GUIDANCE, you okay? Well, go back green then, please. CONTROL, you got anything else?
593258
CONTROL
Negative, FLIGHT.
593259
FLIGHT
Okay. TELMU?
593302
TELMU
Negative, FLIGHT.
593303
FLIGHT
Okay. I want to start hearing from you, TELMU, on these consumables.
593305
TELMU
Say again, FLIGHT?
593306
FLIGHT
I want to start hearing from you as you get some -
593308
TELMU
Roger. We're cranking.
593310
FLIGHT
Okay, go back green, then. GNC?
593312
GNC
Negative, FLIGHT.
593313
FLIGHT
EECOM?
593313
EECOM
Negative.
593314
FLIGHT
Green, please. CAPCOM, Jack, can you think of anything we ought to be working on other than those mentioned?
593320
CAPCOM
I didn't get all you mentioned, but are we working on bringing the AGS up?
593324
FLIGHT
Yeah, that's a possibility, you know? As to whether we gotta do that for the PTC, and do what Tom suggested here.
593332
CAPCOM
Well, we could bring it up and have it there, and it'd be a good idea to make sure it's working.
593337
FLIGHT
Yeah. I just don't want to use any more power right now, or any more water.
593341
CAPCOM
Okay.
593343
FLIGHT
As soon as we know a little more about what we really ought to do, then we'll proceed to spend the consumables to do that. Anything else that you can think of?
593352
CAPCOM
I'd like to have a little more information upon the crew's trajectory with relation to the Moon that we could pass up.
593359
FLIGHT
Yes, and INCO is gonna - at the end of this go-around the room, we're going to ask the crew to standby for about 25 seconds of COMM loss while we do some reconfiguring in an attempt to get tracking on the LM. Okay? But we still think they're still close - FDO, FLIGHT? What -
593417
FDO
Go, FLIGHT.
593418
FLIGHT
What closest approach are you estimating right now on the LM?
593422
FDO
Still looking at about 60 miles, FLIGHT.
593423
FLIGHT
You're still looking at 60, Jack.
593425
CAPCOM
60 miles.
593426
FLIGHT
Yeah.
593427
CAPCOM
And -
593428
FLIGHT
And this COMM thing we're going through is to try to re-establish tracking on the LM; right now, we don't have tracking.
593435
CAPCOM
Okay, thank you.
593436
FLIGHT
You can go back green, then, if you will. Okay - SURGEON, you have anything?
593439
SURGEON
Yeah, two things. We're figuring, looking at this COâ‚‚ problem with you - at what point in time we'd arrive at various levels of COâ‚‚ in the LM configuration. The other thing is, Glynn, we - at some point in time we'd like to get that BIOMED switch on in the LM - it's in the OFF position.
593500
FLIGHT
Okay. Okay, you want to go back green, then? INCO, anything besides that COMM -
593511
FLIGHT
INCO, anything else? Go back green, then. AFD?
593514
AFD
Negative, FLIGHT.
593516
FLIGHT
FAO, you have anything you're working on - that's stowage, right?
593519
FAO
That's affirmative, FLIGHT.
593520
FLIGHT
Any suggestions we might have as to what they might move to the LM, or move to the CSM.
593524
FAO
That's right. We're working on that. I think it'll be minimal anyway.
593528
FLIGHT
Okay. And NETWORK, you got anything?
593531
NETWORK
Well, we hope to have Honeysuckle 210 up by 62 hours for voice only.
  • Honeysuckle's big dish was being used for another experiment and had to be repurposed on very short notice for the rescue effort.
593536
FLIGHT
Okay.
593537
NETWORK
We hope to have them up by then.
593539
FLIGHT
Okay. RECOVERY? You got anything?
593542
RECOVERY
Negative, FLIGHT. Present efforts are to identify ships on the Atlantic and the Indian Ocean.
593546
FLIGHT
Okay. NETWORK, you want to go back green, then? Okay, there are the subjects, and we need to start getting some - closed out on some of them here, gentlemen. So. Let us bend our efforts to get that done.
593604
INCO
Got a GO, FLIGHT?
593605
FLIGHT
Yeah. CAPCOM, would you call the crew and tell them we're going to drop COMM for half a minute here while we try to establish tracking?
593613
CAPCOM
Okay.
593613
FLIGHT
And let them know that our best estimate of the EC's got a 60 mile perigee right now.
  • Technically, pericynthion. Perigee refers to Earth.
593618
INCO
And FLIGHT, if you'll confirm AFT OMNI.
593621
FLIGHT
And you want AFT OMNI?
593622
INCO
Affirm.
593623
FLIGHT
Okay. Got that, CAPCOM?
593700
FLIGHT
Okay, INCO. We've told them. Go ahead.
593702
INCO
Thank you, FLIGHT.
593949
(note)
<< An off-loop conversation is partially caught here, which appears to pertain to powering some elements of the CSM off the LM, possibly to use its life support system. Additional conversation discusses a burn - possibly the one that occurs in the final chapter of this audio to bring the crew back onto a free-return trajectory to Earth as soon as possible, rather than waiting until PC+2 at 79 hours. >>
594136
FLIGHT
EECOM, you copy that?
594139
EECOM
That sounds okay here, FLIGHT.
594140
FLIGHT
Okay with us, Jack.
594147
EECOM
We agree with all of that.
594155
FLIGHT
CAPCOM, FLIGHT.
594156
CAPCOM
Go, FLIGHT.
594157
FLIGHT
As a matter of fact, Jack, why don't you let them know that we're currently - since it's so quiet from here - trying to figure out what's the best configuration to do here relative to maintaining control, maintaining some kind of PTC, staying in the posture that we can do the burn properly, and playing that against the consumables. And as soon as we get a reasonably coherent story we'll brief them in full on it. Okay?
594224
CAPCOM
Okay. How about - are we getting a flight plan worked out, modified, so forth?
594231
FAO
We are working on that, FLIGHT.
594232
FLIGHT
Yeah, working on it. And you might also tell them that we've got Gene Cernan and the guys over in the simulator checking stars, etc, in this configuration.
  • Gemini veteran, Apollo 10 LMP, and eventual Apollo 17 commander.
594242
CAPCOM
Okay.
594243
FLIGHT
And anything that they would like us to run, we can proceed to do it.
594301
TELMU
FLIGHT, TELMU.
594303
FLIGHT
TELMU, let me hear the COMM. Okay? Can we hear it? Do you need something?
594308
TELMU
We've got to power down, here, pretty quick.
594310
FLIGHT
Okay. TELMU, go.
594314
TELMU
We ought to - recommend turning the power off - POWER AMPL off, going to LOW BIT RATE, and getting his AC off, and probably bringing the AGS up on standby.
  • Alternating current inverters
594330
FLIGHT
Okay. What consumable are you running into trouble with, TELMU?
594333
TELMU
Water and electric power.
594337
FLIGHT
Okay. Can you relate some facts to me, here?
594342
TELMU
Like I said, the water is - present rate, we've only got 34 hours left.
  • With splashdown predicted for 133 hours, they would come up nearly 40 hours short here at the present rate of usage.
594355
FLIGHT
Go ahead. Power?
594358
TELMU
Standby 1.
594417
TELMU
Okay, the power is 67.5 hours, FLIGHT.
594421
FLIGHT
Is that ascent and descent?
594422
TELMU
That's affirm.
594423
FLIGHT
At the present load, is that right?.
594425
TELMU
That's right.
594430
TELMU
That's what I - I think we just need to get some things powered down ASAP.
594434
FLIGHT
Okay. Now what are you suggesting, again?
594436
TELMU
I'm suggesting POWER AMPL -
594438
FLIGHT
POWER AMPL. How much does that save?
TELMU
- and LOW BIT RATE - that's about 2.5 amps.
594443
FLIGHT
Alright.
594446
TELMU
And the AC, which is about 2 amps.
594448
FLIGHT
Well, that loses his ball; then we don't have anything. Right? I mean, we don't have the data on the ground - do you have IMU data on the LOW BIT RATE there, CONTROL?
594458
CONTROL
All we'd have is resolvers. It's good enough.
594501
FLIGHT
You can watch it?
594502
CONTROL
Yeah, we can watch the gimbal angle.
594503
FLIGHT
What control mode is he in now?
594505
CONTROL
He's in PGNS MIN IMPULSE.
594506
FLIGHT
So he's still flying it around.
594508
CONTROL
Yes.
594513
FLIGHT
I think it's kind of difficult to talk them through, isn't it?
  • What FLIGHT is referring to here is: say the spacecraft is nearing gimbal lock. How do you describe the direction to rotate toward to avoid it?
594520
FLIGHT
He'd have to bring the ball up to fly it, I'd think.
594523
TELMU
Well, my thought on that a while ago, FLIGHT, was if he goes to an ATTITUDE HOLD mode now, and out of this drifting flight mode, he'll hold the attitude he's in now.
594528
CONTROL
Okay, then you don't have to worry about it.
594530
FLIGHT
Was that what you want to start - recommend, and EECO - TELMU's getting in a hurry, here.
594536
CONTROL
Yeah, well, I don't blame him.
594537
CAPCOM
What's going on with the COMMs, FLIGHT?
594538
FLIGHT
I don't know.
594547
FLIGHT
What else, TELMU, have you got anything else to suggest?
594550
TELMU
Negative, FLIGHT.
594553
FLIGHT
CONTROL, FLIGHT.
594553
CONTROL
Go ahead.
594554
FLIGHT
Now, how about you? What can you do to help? What do we need to do to decide whether to go to the AGS or not, here?
594603
CONTROL
Well -
594604
FLIGHT
Do we know whether or not the - results of this star business in the simulator worked?
594608
CONTROL
That was a request I've got in to SPAN, to extrapolate the measured drift rates on this particular platform to see what it would look like when we got out to 79.5 hours.
594619
FLIGHT
Okay. But if we can see stars, we can do a P52.
594622
CONTROL
Yes, if he can see the stars, then that kind of falls out, you know? And if that - if he can do a 52 align we'd definitely recommend to transfer the alignment into the AGS and turn the AGS on, turn the PGNS down.
594634
FLIGHT
CAPCOM, FLIGHT.
594635
CAPCOM
Go.
594635
FLIGHT
What are you getting out of the star sighting discussions?
594639
CAPCOM
Well, the last thing I heard was that the sunlight reflected off the thrusters - made it so as they couldn't see the stars and they also had a lot of debris still floating around with them, so they are unable to -
594649
FLIGHT
Couldn't see them out of what? Out of the window? Or out of the AOT?
594654
CAPCOM
Out of the window.
594654
FLIGHT
Have they tried the AOT yet, do you know? The reason I'm asking is that we're running low on water. I mean, we're going to run out of water in 34 hours at the current power level.
594734
FLIGHT
How about going to LOW BIT RATE? The POWER AMPL OFF and the LOW BIT RATE? CONTROL? Can you do that now?
594738
CONTROL
That's fine, FLIGHT.
594739
FLIGHT
GUIDANCE, can you do that now?
594741
GUIDO
Roger, FLIGHT.
594743
FLIGHT
INCO, okay with you?
594745
FLIGHT
INCO?
594746
INCO
Say again, FLIGHT?
594747
FLIGHT
Okay with you if we turn the POWER AMPL OFF and go to LOW BIT RATE?
594751
INCO
Well, why don't you let us get ourselves swung in, here, and see how we're going to work out with this problem? We're -
594755
FLIGHT
What just happened?
INCO
- in the midst of that procedure, there.
594756
FLIGHT
Oh, okay. You're still in the middle of that.
594758
INCO
Right.
594758
FLIGHT
Okay.
594800
CAPCOM
I don't have any COMM with them, FLIGHT.
594804
FLIGHT
INCO, FLIGHT. Do we have no uplink right now?
594809
FLIGHT
How come? We still - I thought that was only going to take 30 seconds.
  • Of course, 30 seconds would be if all went well. It didn't, and the LM and IU frequencies got accidentally locked together. It would take quite some time to get a narrower-beam antenna to target just the IU and control its frequency separately.
594840
INCO
FLIGHT, INCO. I don't think he's got an uplink COMM mode right now.
594843
FLIGHT
Well, can we get one?
594844
INCO
Yeah, he's coming through right in that spot that I told you about, there. We're trying to force that lock now, and as soon as we get it we'll give you a call.
594851
FLIGHT
Okay.
594852
CAPCOM
Are we tracking them yet, FLIGHT?
594854
INCO
For reference, going to POWER AMPL OFF on an OMNI in LOW BIT RATE -
594857
FLIGHT
Wait a minute, wait a minute, Ed. The CAPCOM wants to know when we're going to have COMM. Is it coming back shortly?
594903
INCO
I'll give you a call. It'll be back shortly.
594905
FLIGHT
Alright. Okay, now the POWER AMPL.
594907
INCO
If we turn the POWER AMPL OFF, go to LOW BIT RATE and stay on an OMNI, if we go to DOWN VOICE BACKUP; we may be able to make it. It'll be very close.
594916
FLIGHT
Make what?
594917
INCO
Voice.
594919
FLIGHT
Up or down?
594920
INCO
Both.
594923
INCO
It's going to be marginal.
594930
INCO
I'd like to give it a try, though.
594933
FLIGHT
Okay, well let's finish up your test. Are you finished with that test?
594935
INCO
No, they're not quite finished yet. Standby.
595012
FLIGHT
TELMU, FLIGHT.
595014
TELMU
Go, FLIGHT.
595014
FLIGHT
Merlin, I've got your problem, and I appreciate your concern. Right now we're trying to get the COMM back - we kind of have to get his assessment of this thing to see whether we can bring the PGNS down now.
595026
TELMU
Okay. What about the AC? Did - you still kicking that around?
595030
FLIGHT
Well, that's a problem. I don't know what we're going to do for PTC yet. I'm waiting for CONTROL. Without the - we can't just sit there in ATTITUDE HOLD. And I don't know about setting up a PTC in the LM.
595044
TELMU
Okay.
595054
FLIGHT
CONTROL, FLIGHT.
595056
CONTROL
Go ahead, FLIGHT.
595056
FLIGHT
Are his attitudes moving around some? Or is he essentially fixed?
595101
CONTROL
Essentially static in attitude.
595105
CONTROL
He's moving just a little bit but not a heck of a lot.
595138
TELMU
FLIGHT, TELMU.
595139
FLIGHT
Suit - go ahead.
595141
TELMU
This ASCENT TANK 2 pressure has gone back down to a nominal value. We'd like to go back to the DESCENT Oâ‚‚.
595148
FLIGHT
Okay.
595148
TELMU
Close TANK 2 and open DESCENT TANK.
595151
FLIGHT
Okay. CAP - INCO, are we anywhere near back in COMM yet?
595156
INCO
FLIGHT, if you just hang on a couple of more seconds here, maybe we can get this thing squared away so we get the tracking data that the FDO needs. That's what we're after, here.
595204
FLIGHT
I understand that.
595205
INCO
No, we're not - we don't have a good COMM mode at this time.
595207
FLIGHT
Alright.
595209
FLIGHT
CAPCOM, when you get COMM back, we can go back to DESCENT Oâ‚‚. You got that, Jack?
595234
FLIGHT (off loop)
Is it the same procedure?
595253
FLIGHT
GNC and CONTROL, FLIGHT.
595257
CONTROL
CONTROL here.
595257
FLIGHT
Is somebody working me out a PTC procedure?
595300
CONTROL
Yeah, we're trying to get pulled together. We've got one for the AGS right now, FLIGHT.
595303
FLIGHT
Okay.
595326
INCO
FLIGHT, INCO.
595327
FLIGHT
Go ahead.
595328
INCO
It looks like we're getting it slowly, here. We're just about there. As soon as you get it, we'd like to go to FORWARD OMNI.
595334
FLIGHT
Okay.
595412
FLIGHT
TELMU, FLIGHT.
595413
TELMU
Go, FLIGHT.
595413
FLIGHT
Merlin, how many amps are we using with the LGC and the IMU?
595417
TELMU
Just about 12 amps.
595418
FLIGHT
Total?
595419
TELMU
Yeah.
595425
TELMU
It's 10 amps, FLIGHT.
595427
FLIGHT
Total. So we still have about 20 amps, huh?
595429
TELMU
Yeah.
595432
FLIGHT
But they're the - they would be the big coolant items, wouldn't they?
595435
TELMU
Yeah -
595435
FLIGHT
That ought to improve the coolant picture a heck of a lot more than 30 percent.
595438
TELMU
Yup.
595538
FLIGHT
INCO, can we talk yet?
595542
NETWORK
That's a negative, FLIGHT. There's no uplink.
595546
FLIGHT
INCO, have I got an estimate?
595549
INCO
FLIGHT, let me tell you what's happened. While we were trying to lock it up, we've drifted around into FORWARD OMNI country. So right now we're in FORWARD OMNI, we've got AFT selected, and he doesn't know because -
595559
FLIGHT
How so?
INCO
- he has his display breaker pulled. So if I can bear on your indulgence to wait until we swing all the way around to the AFT OMNI, then we can get this -
595606
FLIGHT
We're not exactly swinging, you know?
595608
INCO
Yes, we are, FLIGHT.
595608
FLIGHT
Are we? We moving around?
595609
INCO
We sure are.
595611
FLIGHT
Like this? As far as you can -
  • Sadly, the loops do not record hand gestures.
595613
INCO
No, like this.
595616
FLIGHT
Pitch? Kind of?
595618
INCO
Roll. LM Yaw.
  • The CM and the LM had different axis labels, as the CM flew "forward" with its nose, while the LM axes were optimized for the crew's vantage point while landing on the Moon.
595623
FLIGHT
Command Module roll.
595624
INCO
Look at channel 32.
595631
FLIGHT
Yeah, okay, well - I don't know how to read that one. Is that roll?
595637
CONTROL
FLIGHT, we are pitching right now.
595639
FLIGHT
Pitching, you said.
595640
CONTROL
Roger.
595641
FLIGHT
Okay.
595641
CONTROL
60 degrees, now.
595642
TELMU
FLIGHT, TELMU.
595643
FLIGHT
Well, wait a minute. You guys have data? We should - should we be able to get through then, on the COMM?
595646
TELMU
Roger.
595648
FLIGHT
CAPCOM, you should - INCO, do you think we've got COMM now?
595651
INCO
Give it a try, and get him to say FORWARD OMNI if he shows anything.
595655
FLIGHT
Okay, CAPCOM.
595658
TELMU
FLIGHT, TELMU.
595700
FLIGHT
Go ahead.
595700
TELMU
I'll come up a minute.
595702
FLIGHT
Come ahead, Merlin.
595706
INCO
Jack, say FORWARD OMNI.
595736
FLIGHT
CAPCOM, as soon as you get a hold of him, would you get him to say what he wants to say about the starfield? And you can tell him to go back to the DESCENT Oâ‚‚. CONTROL, from FLIGHT.
595746
CONTROL
Go ahead.
595747
FLIGHT
I'm becoming convinced that we don't have any choice here, but that we've got to go to some kind of AGS mode, here.
595752
CONTROL
That's right; I'm taking the procedure now.
595753
FLIGHT
Okay. You getting it all written up?
595755
CONTROL
I'm getting it - priority out of the Activation checklist.
595758
FLIGHT
Okay.
595807
FLIGHT
The - procedure - procedure is available from these - from CONTROL for the AGS PTC, and I think we're running out of choices. We're probably just going to have to -
595818
INCO
CAPCOM, you might try it now.
595900
FLIGHT
CAPCOM, have you - have you got them yet?
595905
CAPCOM
No, I haven't got them yet.
595907
FLIGHT
There he is. Okay, everybody. Here's COMM.
595923
FLIGHT
It's probably due to our configuration.
595933
INCO
FORWARD OMNI.
595936
FLIGHT
And we need FORWARD OMNI.
600003
INCO
Okay.
600013
CAPCOM
He's been on it, and he is on FORWARD OMNI, and the COMM has a lot of background noise from Houston.
600018
FLIGHT
Okay. What can we do, INCO?
600020
INCO
Okay, let me just try one more thing, we'll be with you.
600022
FLIGHT
Alright. Hurry.
600031
FLIGHT
CAPCOM, FLIGHT.
600033
CAPCOM
Go, FLIGHT.
600034
FLIGHT
Look. When we get them, you get the Oâ‚‚ business straightened out. But tell them that we have to, very soon, decide to bring the AGS up, and do things with that.
600102
FLIGHT
INCO -
600120
FLIGHT
INCO, FLIGHT. What are we getting?
600126
FLIGHT
What are we getting?
600153
FLIGHT
INCO, FLIGHT. Are we going to get COMM back? I'm going to knock off the tracking here in a minute. That 30 second -
600156
INCO
That's - FLIGHT, we're going -
FLIGHT
- test has run too long.
600159
INCO
Right. We're going back to the normal mode. Standby.
600210
FLIGHT
CONTROL, you write -
600234
TELMU
And close ASCENT.
600235
FLIGHT
Yeah.
600247
FLIGHT
CAPCOM, does he have anything to say about stars and P52 yet?
600255
CAPCOM
No, I haven't heard any word. I can't ask him a question because he can't read me.
600258
FLIGHT
Yeah. INCO, have we reconfigured yet?
600309
INCO
Go ahead, FLIGHT.
600309
FLIGHT
We reconfigured yet?
600311
INCO
Negative.
600312
FLIGHT
How long?
600313
INCO
No estimate. I'll get it for you soon as we can.
600331
INCO
FLIGHT, we have a 2 minute estimate.
600334
FLIGHT
Okay.
600438
INCO
Negative, FLIGHT.
600439
FLIGHT
It was us, Jack.
600442
FLIGHT
It was the ground configuration.
600531
INCO
FLIGHT, INCO. We need AFT OMNI.
600557
INCO
FLIGHT, INCO. AFT OMNI.
600558
FLIGHT
CAPCOM, AFT OMNI.
600602
FAO
And FLIGHT, FAO.
600603
FLIGHT
Go ahead.
600604
FAO
If he wants to try the method John's been talking about, we can give them an attitude to go to.
600614
INCO
FLIGHT, that's the IU frequency. Just say AFT OMNI and we'll be in there, I think.
600631
FLIGHT
CONTROL, FLIGHT. How are you doing?
600633
CONTROL
We're just about there, FLIGHT, on this AGS turn-on procedure.
600636
FLIGHT
Okay. Okay.
600638
TELMU
FLIGHT, TELMU.
600638
FLIGHT
Go ahead.
600639
TELMU
Can we go ahead and get the POWER AMPL off?
600643
FLIGHT
I'm afraid to do anything to the COMM right now, until we have this discussion with them about what we want them to do, Merlin.
600655
FLIGHT
- I sure do. And I want to get it off as bad as you do.
600700
TELMU
Right.
600720
FLIGHT
Can - TELMU, FLIGHT.
600724
FLIGHT
TELMU, FLIGHT.
600725
FLIGHT
TELMU, FLIGHT.
600727
FLIGHT
TELMU, FLIGHT.
600734
FLIGHT
TELMU, FLIGHT.
600736
TELMU
Go, FLIGHT.
600736
FLIGHT
Is there much of a difference to you to operate on the AGS, with the PGNS down? Water-wise?
600741
CAPCOM
Still want FORWARD OMNI?
600742
TELMU
Well, it's about - about 3 amps, but primarily the AGS does run a little cooler, and you'd be bringing up a new piece of gear. So, it'd be a different thermal load, there.
  • That hasn't been running and is therefore starting cold.
600753
FLIGHT
Yeah. Well, I want to get into this configuration and try it.
600756
TELMU
Yeah.
600757
FLIGHT
Has he said anything about the stars yet? Jack?
600800
CAPCOM
No, he hasn't. We can't even ask him a good question. You still want FORWARD OMNI?
600805
FLIGHT
FORWARD OMNI, INCO?
600807
INCO
No. AFT OMNI, FLIGHT.
600810
INCO
But you're not going to get through.
600813
INCO
FLIGHT, INCO.
600814
FLIGHT
Go ahead.
600815
INCO
They're having trouble grabbing ahold of the S-IVB to push it out of the way, is what the problem is.
  • Somewhere in their frequency tuning, they managed to get both spacecraft tangled together. Unfortunately, the fallback frequencies both craft default to when a link can't be established are also very close to each other. So the only way to separate them is to use a dish precise enough to physically target just one with its beam -
600820
FLIGHT
Okay, well, we had COMM before. Can we get back to there?
600822
INCO
That's what they're trying to do. We're not having any luck. There's one suggestion we can do. We can turn the LM transceiver completely off for about 2 to 3 minutes, and let them grab ahold of the S-IVB, push it out of the way, and then bring it back up.
  • FLIGHT must be wary of these time estimates by now.
  • - or, to turn the LM COMM completely off and talk just to the S-IVB to move it aside on the frequency band.
600838
FLIGHT
Is that what we have to do now? We can't talk to them to tell them to do that.
600840
INCO
Well. That's right. But if we can get up ?? here, just say: "turn your transceiver off for 3 minutes. Then turn it back on." And I'll try to give you a call if I think you can get through.
600855
FLIGHT
Okay.
600914
FLIGHT
What's the proper terminology over there? On the switch.
600917
CAPCOM
You want the TRANSMITTER/RECEIVER?
600917
INCO
TRANSMITTER/RECEIVER to OFF. Panel 12.
600921
FLIGHT
For 3 minutes.
600928
CAPCOM
You want S-BAND XMTR/RCVR OFF?
600931
FLIGHT
Is that our best step here, INCO?
600933
FLIGHT
INCO, FLIGHT. Is that our best step to get COMM back?
600941
FLIGHT
INCO, FLIGHT.
600942
INCO
Go ahead.
600943
FLIGHT
Is that our best step now to get COMM back?
600945
INCO
That's our best step. Right.
600947
FLIGHT
CAPCOM, give them that. We'll try.
600948
INCO
He's not going to hear you, FLIGHT, right now.
601008
FLIGHT
CONTROL, FLIGHT.
601009
CONTROL
Go ahead.
601010
FLIGHT
Now, how close are you to having this thing - you're proposing an AGS PTC mode and a -
601016
CONTROL
Well, we just got input - what I'm going to do you - with right now, is a procedure for turning the AGS on and aligning it to the PGNS, so we can turn the PGNS off.
601023
FLIGHT
Yes.
601024
CONTROL
And that'll leave us in an AGS ATTITUDE HOLD mode.
601026
FLIGHT
Yes.
601027
CONTROL
And I just got word from SPAN, the procedure we had for the PTC in AGS, Carlton Hanaway has been, he's - it's not going to work. He's working feverishly to get one that will. Just got that input.
601040
CONTROL
You might be able to handle it without the PTC, save the attitude that we at - are now at, and then just change attitudes over some time schedule.
  • This ended up being the approach, after the end of this audio record.
601050
FLIGHT
Okay.
601051
CAPCOM
Do you recommend we simulate this procedure over in the LMS before we ship it up?
601057
FLIGHT
Which procedure, Jack? What we're proposing is an AGS ATTITUDE HOLD that we change periodically.
601105
FLIGHT
Since they don't have a PTC, as such, that works.
601108
CAPCOM
Well, that's what I mean -
601109
FLIGHT
Yes.
CAPCOM
- we've got a procedure that will give us PTC in AGS, try it in the simulator first.
601114
FLIGHT
They - they don't have a procedure to get a PTC in AGS. They had one -
601117
CONTROL
We had one -
FLIGHT
- it doesn't work.
CONTROL
- but it doesn't work. Somebody thinks it won't, so we're not going to try it. Unless you want to try that one in the simulator.
601123
CAPCOM
Okay.
601125
CONTROL
I would say no on that.
601253
FLIGHT
INCO, sing out as soon as you think we've got COMM over there, will you please?
601256
INCO
Yes sir.
601258
FLIGHT
What are we doing now?
601300
INCO
They're trying to bring up an uplink carrier to the LM so we can get some voice to them.
601332
FDO
FLIGHT, FDO.
601333
FLIGHT
Go ahead.
601334
FDO
I'll bring you up to speed on what I've been doing down here.
601336
FLIGHT
Say again?
601336
FDO
I'll bring you up to speed on what I've been doing down here. Looking at a maneuver in the vicini - in the present time range, and on the vector that I've got now, looking at about 16 feet per second to get free-return.
  • What FDO is talking about here is the plan to be shortly executed. Rather than wait all the way around the Moon to 79 hours (PC+2) to get the spacecraft back on track to return to Earth, they will initiate a burn with a ∆V of 16fps (11mph; 17.5km/h) very soon, after which they can power down the PGNS and feel good about being roughly on track.
601349
FLIGHT
Yeah; that's what I'm hearing over here in my other ear, Bill.
601351
FDO
Alright. And, I've got some selects down here working on a vector right now. This is on the CSM doppler after the glitches.
601359
FLIGHT
Mmhmm.
601359
FDO
And we're not sure whether it's going to be any better than what we've got now.
601403
FLIGHT
Uh huh.
601404
FDO
So, I guess what I've got to say is that in about 10 minutes, I can have a maneuver ready - I'll be able to compute a maneuver; time range of 61:30. And we can make our decision with that - ∆V will be around, like I said, about 16 or 17 feet per second.
601420
FLIGHT
And that's a free-return.
601421
FDO
That's affirm. So you can work with that number.
601424
FLIGHT
Thank you.
601427
GUIDO
FLIGHT, GUIDANCE.
601428
FLIGHT
Go ahead.
601429
GUIDO
Okay, we've got a good G&N now, if we - probably get a real good burn off now. Go ahead and do it with this good G&N -
601434
FLIGHT
Uh huh.
GUIDO
- get a free-return.
601558
FLIGHT
FDO, FLIGHT.
601559
FDO
Go, FLIGHT.
601600
FLIGHT
Can we - how long would it take you to get a free-return maneuver - could you get one at 61 hours?
  • Lunney is anxious to get the PGNS off.
601607
FDO
Roger that. I can. It's just a question of which vector we want to do it on, FLIGHT.
  • Whether to use the current guess of the spacecraft position, or to wait for tracking data which may give a better idea.
601611
FLIGHT
Well, get one at 61 on the best vector you have.
601614
FDO
Roger that.
601714
FLIGHT
EECOM, FLIGHT - TELMU, FLIGHT.
601716
EECOM
Go ahead, FLIGHT.
601717
TELMU
Go, FLIGHT.
601717
FLIGHT
Merlin, how much water does it cost us to keep the PGNS up for another hour?
601723
TELMU
How much water -
601723
FLIGHT
You got an hourly rate on it?
601726
TELMU
Standby.
601814
INCO
FLIGHT, I think you've got COMM.
601816
FLIGHT
Jack, we have COMM.
601834
TELMU
FLIGHT, TELMU.
601835
FLIGHT
Go ahead.
601836
TELMU
That's about - cost you about 3 pounds of water.
601839
FLIGHT
3 pounds of water to keep it up for another hour.
601841
TELMU
Right.
601841
FLIGHT
Out of how many pounds?
601843
TELMU
About 230.
601846
FLIGHT
That's - seems to me to be worth it.
601848
?? (off loop)
Yeah, right, I think we gotta keep it up.
601850
TELMU
Okay.
601850
?? (off loop)
Get into free return and then power it down -
601851
FLIGHT
Yup. Then power it down, let it drift, and we'll do what we want to tomorrow.
601855
TELMU
Okay, but can we go ahead and turn the POWER AMPL off?
601859
FLIGHT
POWER AMPL. What will that do to my COMM?
601900
INCO
FLIGHT, INCO.
601901
FLIGHT
Go ahead.
601902
INCO
We lost it again. Standby.
  • Lunney loses his cool a bit off loop here.
601907
FLIGHT
Gentlemen, we're going to proceed to do a free-return maneuver here. At 61 hours, assume that; as soon as we get COMM with the crew we'll see how they feel about doing it there. It's going to be about 16 feet a second, Jack. We want to get on a free-return so we can get powered down. And we'll still kick it at PC+2, if - all - if we can get everything back up and aligned properly. But, with the way it is, we want to get back on free-return; cost us an hour's time here with the PGNS powered up, that's 3 pounds of water and we'll spend that. Okay?
  • Speed up the return with another burn.
601941
FLIGHT
Now, FDO, get me a PAD, pronto.
601944
FDO
Copy.
601945
FLIGHT
And we'll run a couple of them in case we get behind on time, here. GUIDANCE, what do we need - how do we need to burn this thing? We don't have a vector in there; it's not going to be a guided burn, is it?
  • The LM's computer, despite having identical hardware, was not set up in software to perform calculated maneuvers outside the Lunar reference frame.
601955
GUIDO
FLIGHT, I'm going to MIT run it in a hybrid and see if it can take a vector, if it'll work alright -
601959
FLIGHT
If it can't, how do we do it?
GUIDO
- that's what I'm working on right now. If it can't, we'll do it in ATTITUDE HOLD. P47.
602004
FLIGHT
Alright. I think that's the way we want to do it anyway, that mode will get you all that -
602007
GUIDO
Yeah, that's what we know will work right now, I think. But we're going to look at the other.
602026
FLIGHT
INCO, let me know as soon as we get COMM, will you?
602028
INCO
Roger.
602049
FLIGHT
INCO, what do you think my chances are getting COMM back here shortly are?
602055
INCO
Starting to look a little better here, FLIGHT.
602057
FLIGHT
Okay. FDO, you got an estimate on that PAD?
602100
FDO
Say again, FLIGHT?
602100
FLIGHT
You got an estimate on that PAD?
602102
FDO
5 minutes, FLIGHT.
602103
FLIGHT
Thank you.
602106
FLIGHT
And while you're at it, and get - while you get that one out, run a couple more at 15 minute increments. Run one at 60:45, and run one at 61:15, etc. Okay?
602118
FDO
Copy.
602119
FLIGHT
But get the 61 hour one out pronto.
602122
FDO
Roger.
602124
FLIGHT
CONTROL, FLIGHT. You copying me?
602127
CONTROL
Go ahead, FLIGHT.
602127
FLIGHT
We're going to do a little burn here, 16 feet a second and get back on free-return -
602132
CONTROL
Roger.
FLIGHT
- as soon as we can get COMM, we're shooting for 61 hours.
602136
CONTROL
Roger.
602139
FLIGHT
GUIDANCE is doing something to see how the equations are going to work, but I'm inclined to say we ought to do it in ATT HOLD PGNS. Consider that, and consider everything else you want to think about and tell me any changes you'd want to make. And where we ought to pick up the checklist, etc; and let's refer to the - as best we can from the pilot's books, Hal. Tell them where to pick up from where they are now.
602200
CONTROL
Roger.
602240
INCO
FLIGHT, INCO.
602242
FLIGHT
Go ahead.
602243
INCO
It looks like you've got it.
602244
FLIGHT
COMM, Jack. Okay, everybody, let's be quiet. We have COMM. We've got a lot of business to do.
602327
FLIGHT
Figure something out.
602337
FLIGHT
After the midcourse.
602413
FLIGHT (off loop)
No, I don't - wait a minute!
602414
FLIGHT
We can give them another 15 minutes if - yeah, we can give another - get a suggestion from him. We can figure it out whenever he wants it.
602424
FLIGHT
Get a suggested Tig time from him, Jack, that he's comfortable with. Yeah, it's not going to cost us much water.
602459
FLIGHT
FDO, stand by on a Tig time.
602507
FLIGHT
61:20. Is that okay? 61:25.
602513
CAPCOM
How about 61:30?
602514
FLIGHT
Okay.
602529
FLIGHT
That's right.
602533
FLIGHT
Okay, FDO. You got that Tig?
602539
FDO
Go, FLIGHT. FLIGHT, FDO.
602544
CONTROL
Affirmative.
602545
FLIGHT
Affirmative.
602547
FLIGHT
FDO, you got the Tig time?
602549
FDO
Copy. 61 +30.
602550
FLIGHT
Okay. Proceed.
602638
FLIGHT
Okay.
602712
FLIGHT
Okay. CAPCOM, I don't think he ought to do any special maneuvering to find this out right now, do you? Don't talk them into that.
602739
FLIGHT
Okay. Let's concentrate on the burn.
602821
FLIGHT
I didn't hear all of his question. John?
602824
CAPCOM
How much can he use the TTCA?
602829
FLIGHT
FDO, FLIGHT. Have you got tracking on the LM?
602832
FDO
Standby, FLIGHT.
602840
FDO
That's affirm, FLIGHT.
  • Good news: all the radio work was worthwhile.
602841
FLIGHT
Okay. Are you seeing anything? He's using his translation controller for attitude control. With the stack. You understand?
602848
FDO
I'll check.
602848
FLIGHT
And now are you seeing that in the trajectory? Have you got a good, solid trajectory?
602853
FDO
I'll check now.
602900
FLIGHT
GNC, FLIGHT - CONTROL, FLIGHT.
602903
CONTROL
CONTROL here.
602904
FLIGHT
GNC?
602908
GNC
Go ahead, FLIGHT.
602909
FLIGHT
Consider doing a 16 foot-a-second with the Command Module RCS. Service Module RCS - tell me what that means to me.
602917
CAPCOM
FLIGHT.
602918
FLIGHT
Go ahead.
602918
CAPCOM
Okay, he's wanting us to follow him through on the 2-hour activation. And so I want some people -
602924
FLIGHT
Okay.
CAPCOM
- standing by to go with it on me.
602926
FLIGHT
CONTROL, TELMU, GUIDANCE. FLIGHT.
602928
CONTROL
Go.
602928
TELMU
Go.
602928
FLIGHT
Stand by on the loop here -
602930
GUIDO
Go, FLIGHT.
FLIGHT
- we're going to follow through the activation.
602931
CAPCOM
Okay, are we - down through 1. Step 1 on page 1.
602942
INCO
FLIGHT, INCO.
602946
FLIGHT
Go ahead.
602946
INCO
I'd like you to ask him to manage the OMNIs as he's talking.
602950
FLIGHT
Does he have his meter up?
602952
INCO
Yeah, it seems as though he still has that display breaker in, so the meter must be up.
602956
FLIGHT
Okay.
602956
INCO
It appears from my CAL curve that he's up.
602959
CAPCOM
Okay. Let's go. He's gotta hurry to get this 2-hour Activation done in 1 hour. So why don't we -
603004
FLIGHT
Okay, everybody. Quiet in the room, please, and let's walk through with Jack on the Activation. Everybody got their book out, ready to follow. CONTROL, TELMU, thumbs up -
603013
CONTROL
Roger, FLIGHT.
FLIGHT
- GUIDANCE. Go, Jack.
603015
CAPCOM
Okay. We're on page 1, step 1. And he's going to be talking back.
603039
TELMU
TELMU. Concur.
603057
TELMU
Concur. Okay.
603110
TELMU
FLIGHT, TELMU.
603113
FLIGHT
Go ahead, TELMU.
603115
TELMU
Okay, we do not want to INVERTER 1 CLOSED.
603117
FLIGHT
You what?
603119
FLIGHT
Say again, TELMU?
603120
TELMU
We do not want INVERTER 1 breaker CLOSED in step 5, here.
603123
FLIGHT
Okay. CAPCOM, we do not want INVERTER 1 circuit breaker CLOSED in step 5. Do not.
603135
TELMU
And omit step 6.
603137
FLIGHT
And omit step 6.
603214
TELMU
Roger.
603222
TELMU
FLIGHT, we recommend leaving the caution/warning off.
603225
FLIGHT
Caution - recommend that, huh? He says recommend leaving caution and warning off, Jack.
603256
TELMU
We got the time.
603300
TELMU
We got the time, here.
603302
FLIGHT
You got it?
603303
TELMU
We got it.
603310
CONTROL
FLIGHT, CONTROL.
603311
FLIGHT
Go ahead.
603312
CONTROL
Okay, on step 1 did I understand he left the - that he did close ENGINE CONTROL breaker?
603319
FLIGHT
What is your question?
603320
CONTROL
Did he activ - did he close the ENGINE CONTROL breaker under item 1, page 3? Last entry.
603327
FLIGHT
I don't know.
603337
RETRO
FLIGHT, RETRO.
603338
INCO
FLIGHT, INCO. We need AFT OMNI.
603351
RETRO
FLIGHT, RETRO.
603353
FLIGHT
Can you wait a minute, RETRO?
603401
FLIGHT
Satisfied, CONTROL?
603402
CONTROL
That's not it, FLIGHT. That's not it.
603408
INCO
AFT OMNI, FLIGHT.
603409
FLIGHT
And we need an AFT OMNI, Jack. We'll lose COMM.
603422
CONTROL
We got it, FLIGHT.
603426
FLIGHT
Okay, CONTROL?
603427
CONTROL
Roger.
603441
CAPCOM
Okay, you want the circuit breaker -
603444
FLIGHT
Okay. Copy these, guys.
603454
TELMU
That's good.
603501
CONTROL
Break, break.
603513
FLIGHT
Okay. Have him standby right there, Jack. What is it, CONTROL?
603515
CONTROL
Okay. On row 1, we need -
603521
FLIGHT
Circle it, we'll get it at the end.
603641
FLIGHT
Okay, standby, we have a comment. CONTROL, you have a comment.
603643
CONTROL
Yes, on row 1, DECA GIMBAL under AC BUS A needs to be closed.
603649
CAPCOM
Hey, there's a lot of breakers that aren't closed that we have called out in the checklist here. Do you want them to close all those that are outlined?
603704
CONTROL
We'll catch the DECA POWER later on.
603709
CONTROL
We'll catch that later.
603710
FLIGHT
We'll remind him of that later.
603712
CONTROL
It's in the procedure.
603713
FLIGHT
It'll come up in the procedure later, Jack.
603720
CAPCOM
How about the rest of these breakers? You want them to close them and open them as outlined in the checklist, here, or you going to have them hold up? Looks like we're going to screw up our procedure here if we don't do it just the way it's outlined.
  • CAPCOM doesn't like the seat-of-the-pants verification that's happening.
603733
FLIGHT
I didn't hear you, Jack, I was getting other input.
603735
??? (off loop)
They're really going to give you a lot of data you don't need - displays and stuff you're not going to get.
603739
CAPCOM (off loop)
You rather -
603742
FLIGHT (off loop)
Yes.
603748
FLIGHT (off loop)
Yes.
603748
CAPCOM (off loop)
- they're supposed to be in that are not now in -
603750
FLIGHT (off loop)
Yes.
CAPCOM (off loop)
- aren't we going to call those out now?
603752
FLIGHT
TELMU and CONTROL, do you want these that aren't closed to be closed?
603757
FLIGHT
TELMU and CONTROL?
603758
TELMU
No. TELMU.
603801
FLIGHT
Say again?
603803
TELMU
Negative from TELMU.
603804
FLIGHT
CONTROL, how about you?
603806
CONTROL
Negative from us, FLIGHT.
603807
FLIGHT
Well, why are you saying that? Why don't we just do it by the book?
603809
CONTROL
Well - that's the quickest thing in my mind, to do it - just do it by the book.
603813
FLIGHT
Well, why aren't we doing that?
603816
CONTROL
Well. It may take a little more power than what we need - than what we've got to spare.
603822
FLIGHT
Well, I'm willing to spend that right now.
603824
CONTROL
Okay.
603825
CAPCOM
Use the reviewed procedures? We want to -
603827
FLIGHT
Yeah. I think we'd better stick with what we know works.
603830
CAPCOM
- I think we ought to stick to the procedure as-written.
603832
FLIGHT
Yup. I agree, Jack. Let's go ahead.
603834
CAPCOM
You want me to tell them to push them in as -
603836
FLIGHT
As on the list.
CAPCOM
- outlined on the checklist.
603838
FLIGHT
Yes. I don't want to take any chances with this.
603917
FLIGHT
Okay, everybody, stick with him now. We're going to be moving on to the next steps.
603924
FLIGHT
GUIDANCE, FLIGHT. I want you to have somebody looking ahead. We're going to do this burn in P47. Right?
603930
GUIDO
FLIGHT, GUIDANCE, I don't think we can do it in 47. I don't think we have TVC control in 47.
603936
FLIGHT
What are we going to do it in?
603938
GUIDO
We'll have to do it in 40.
  • P40
603941
FLIGHT
It doesn't - do we know it works?
603943
GUIDO
We're having MIT run it.
603945
FLIGHT
We have to get them a vector then, up. Do we?
  • With the passive P47 burn program, the computer doesn't need to know much. But to do a P40 it would have to know its starting state vector so that it would know that it achieved the desired post-maneuver state vector.
603947
GUIDO
That's affirm.
603949
FLIGHT
I don't really care for that - that's all we can do?
603953
GUIDO
Well, we haven't talked to CONTROL about using the AGS possibly.
603957
FLIGHT
The AGS are not up!
603958
CONTROL
The AGS's not up, and that's strictly a manual operation - that'd be even worse than a 47, probably.
604003
CAPCOM
The procedure as written calls for P40.
604006
FLIGHT
Yeah. The concern, Jack, is that the LM computer, with these funny vectors, we have to verify, see -
  • Again, because the spacecraft is not in the reference frame of the Moon at the moment.
604017
CONTROL
Yes.
604020
GUIDO
Leave the RCS TCAs in.
604022
FLIGHT
Yes.
604025
FLIGHT
GUIDANCE, FLIGHT.
604026
GUIDO
Go, FLIGHT.
604027
FLIGHT
When will the answer come in if it's okay - when are you going to put a vector in, etc?
604036
GUIDO
They're on schedule right now for 61:30?
604038
FLIGHT
Yes.
604039
GUIDO
Okay. We'll - roger. We've got a vector, I think now, that we could go ahead and - but let's standby to get - see if we could get an answer here in the next few minutes. It might be close to there on the hybrid right now.
604052
FLIGHT
Yeah, okay. When am I going to get the answer? Do they know I need it in - you know, 10 or 15 minutes?
604057
GUIDO
Yes, FLIGHT.
604058
FLIGHT
We don't have all night.
604059
GUIDO
They know you need it.
604100
FLIGHT
Alright.
604107
CAPCOM
Okay. And now we can go through this list and see if there are a couple odds and ends we can yank out. Like the tape recorders, he suggests.
604114
FLIGHT
Okay with the tape recorders, TELMU?
604116
TELMU
Roger.
604117
FLIGHT
Yes.
604118
CAPCOM
Any others like that?
604119
FLIGHT
Anything else that's essentially trivial?
604121
CONTROL
We'd recommend opening the RENDEZVOUS RADAR HEATER -
604125
TELMU
They're already opened.
  • But the checklist wants them closed.
CONTROL
- and the LGC. LANDING - excuse me, LANDING RADAR.
604129
FLIGHT
Yeah, that's open too.
604130
CONTROL
Okay.
604131
FLIGHT
All we've got, then, is the recorder, Jack. We agree with that. The others are all okay.
604137
CAPCOM
Okay.
604212
FLIGHT
CONTROL, FLIGHT.
604215
FLIGHT
CONTROL, FLIGHT.
604216
CONTROL
Go, FLIGHT.
604217
FLIGHT
While you're doing that, could you have somebody work with GUIDANCE on - even without TVC, if we trim this gimbal up right, and don't throttle up for 40 feet a second, we ought to be able to have a pretty good controlled burn.
604233
CONTROL
That's right.
604234
FLIGHT
Work that problem in case thing from MIT comes out negative.
604237
CONTROL
Okay. You talking about doing it in 47?
604239
FLIGHT
Yeah.
604240
CONTROL
Okay.
604244
CAPCOM
How about VHF A and B? We want that left off?
604247
INCO
Off.
604247
FLIGHT
VHF A and B.
604248
INCO
Off.
604248
FLIGHT
Off.
604249
CAPCOM
OPEN?
604250
INCO
OPEN, yes.
604250
FLIGHT
OPEN.
604303
INCO
Negative.
604304
FLIGHT
Negative.
604318
INCO
When we need it - when we want it we'll tell him.
604319
FLIGHT
Leave it OPEN; we'll call for it when we want it.
604416
FLIGHT
PROCEDURES, FLIGHT.
604418
PROCEDURES
Go ahead.
604418
FLIGHT
61:30, Jim.
604420
PROCEDURES
Roger that. Thank you.
604421
FLIGHT
You're squeaking.
604425
FLIGHT
CAPCOM, FLIGHT, they're going back over the panel, are they? Okay.
604431
FLIGHT
CONTROL, TELMU, and GUIDANCE, and INCO.
604432
CONTROL
CONTROL here.
604433
FLIGHT
Look ahead a little bit, now, in this thing, and anticipate what you want to be deleted.
604439
GUIDO
Roger.
604448
CONTROL
Negative. Not - negative on the PQGS. Standby.
604451
FLIGHT
Negative on the PQGS. We're checking the REGs.
604502
CONTROL
And negative on the ASCENT HELIUM REGs.
604504
FLIGHT
And how about the SYSTEM ENGINEER X-POINTER?
604507
CONTROL
X-POINTER negative.
604508
FLIGHT
X-POINTER negative.
604523
TELMU
Roger.
604537
TELMU
Negative.
604537
FLIGHT
TELMU, you said no, didn't you?
604538
TELMU
Negative.
604538
FLIGHT
Negative.
604549
FLIGHT
FAO, let me how we're doing on time, will you? How are we doing?
604554
FAO
Roger, FLIGHT, we will. Standby.
604557
FLIGHT
I want you to monitor us here, and see that we're on time.
604600
FAO
Roger.
604612
FLIGHT
CONTROL, no AGS, right?
604613
CONTROL
No AGS.
604613
FLIGHT
No AGS.
604617
CONTROL
We need the ATCA breaker, but no AGS.
604625
FLIGHT
FDO, FLIGHT.
604626
FDO
Go, FLIGHT.
604627
FLIGHT
Now run one for 61:45.
604629
FDO
I'll take it to them.
604639
CONTROL
It's for the gimbals, FLIGHT.
  • Correcting the LMP.
604643
CONTROL
Negative.
604647
FLIGHT
ATCA AGS? Is that what he said?
604649
CONTROL
Affirmative.
604650
FLIGHT
Okay.
604650
CONTROL
He's only reading out the ones he's leaving open, is that right?
604655
CAPCOM
That's affirmative. The ones that are black in the checklist, which he is deviating, he is calling out.
604701
CONTROL
Yeah. Okay. I assume the other ones he didn't mention are closed, if they are blacked in.
604705
FLIGHT
Yes. By the book.
604714
TELMU
No. Close that one.
604715
FLIGHT
You want that one closed?
604716
TELMU
Yeah. It doesn't pull any current.
604718
FLIGHT
CAPCOM, want that closed, it doesn't take any current.
604735
TELMU
Yeah.
604800
FLIGHT
INCO?
604801
INCO
Roger.
604801
FLIGHT
INCO?
604802
INCO
Which circuit breaker is he talking about?
604804
FLIGHT
He said can we leave the steerable off, and operate off the OMNIs?
604807
INCO
That's true. We want the heater circuit breaker left in, though.
604811
FLIGHT
Okay. Are you listening to the loop?
604812
INCO
Yes.
604813
FLIGHT
Yeah, we want the heater circuit breaker in, but we'll stick with the OMNIs.
604816
INCO
Right.
604817
FLIGHT
CAPCOM.
604845
GUIDO
FLIGHT, GUIDANCE.
604846
FLIGHT
Go.
604846
GUIDO
Okay, we've got a - our LOAD's ready to go, here, FLIGHT. We want to load a vector and external ∆V.
  • This is the current ground-based tracking information of spacecraft position and velocity.
  • And this is the burn specification.
604851
FLIGHT
Okay. Have the loads been verified, yet? Is this the same vector that's being run on a hybrid?
604858
GUIDO
Close to it, FLIGHT. Essentially the same thing.
604901
FLIGHT
You're sure of that?
604901
GUIDO
Roger.
604903
FLIGHT
Alright.
604907
FLIGHT
And when they run it and say it's okay, we can assume it is? Is that right?
604910
GUIDO
That's affirm, FLIGHT.
604911
FLIGHT
Alright. Is it the same vector we would have used for this DPS +2 - LI +2 hours, or is it a different one?
604919
GUIDO
Well, it's FDO's present vector, FLIGHT. The only problem that we're worried about is the integration problem on board -
  • The AGC read the IMU several times a second to update the state vector, thus integrating it over time. Once again, the abnormal reference frame is the concern.
604923
FLIGHT
Yeah. Mmhmm.
604925
GUIDO
Okay -
604925
FLIGHT
And the scaling, and all that business.
604927
GUIDO
Yeah, but the vector doesn't really matter all that much what vector it is.
604936
GUIDO
This is - this is essentially the one. We need to load this, though. Even to do a P47 -
604940
FLIGHT
Okay.
GUIDO
- we need to load this vector.
604947
TELMU
Negative.
604948
FLIGHT
Say again, TELMU? Negative?
604949
TELMU
Negative.
604950
FLIGHT
Negative?
604954
FLIGHT
And, CAPCOM, if we get P00 and DATA, we will put a state vector and target LOAD in for him.
605016
FLIGHT
Yes.
605020
FLIGHT
GUIDANCE, you should have it.
605022
GUIDO
Okay, FLIGHT. We'll have to wait until they get the uplink configured. INCO's working on it.
605030
FLIGHT
ORDEAL?
605031
CONTROL
Negative. You don't need it.
605032
FLIGHT
Negative.
605041
TELMU
FLIGHT, TELMU.
605042
FLIGHT
Go.
605043
TELMU
Before we burn here, we should deploy the landing gear so that we don't get any control problems.
605048
FLIGHT
Does that come up somewhere in the procedure?
605051
CONTROL
It comes up, FLIGHT.
605052
FLIGHT
Say again?
605052
CONTROL
It comes up -
605053
TELMU
Yes, it does.
605056
FLIGHT
I didn't hear his question, Jack.
605057
CAPCOM
ASCENT ECA breaker on panel 11, we want it OPEN or CLOSED?
605100
TELMU
OPEN.
605100
FLIGHT
TELMU?
605101
TELMU
OPEN.
605101
FLIGHT
OPEN.
605113
CAPCOM
Okay. Are we happy with the circuit breaker configuration? Do we want them to press on?
605116
FLIGHT
Circuit breaker panel. CONTROL, GO or NO GO?
605120
CONTROL
CONTROL is okay.
605121
FLIGHT
TELMU?
605122
TELMU
GO.
605122
FLIGHT
GUIDANCE?
605123
GUIDO
We're GO.
605124
FLIGHT
INCO?
605125
INCO
We're GO.
605125
FLIGHT
GO, CAPCOM.
605132
CAPCOM
What about the landing gear?
605134
FLIGHT
They'll come to that in the checklist, apparently.
605136
CAPCOM
Okay.
605237
FAO
FLIGHT, FAO. We concur with that.
605239
FLIGHT
We concur.
605241
FLIGHT
FAO concurs.
605244
FLIGHT
INCO, do you have the OMNI for the burn attitude?
605246
GUIDO
FLIGHT, GUIDANCE, we're in the middle of a LOAD right now.
605249
FLIGHT
Oh. Okay. CAP - what do you mean? You don't want them to maneuver?
605252
GUIDO
That's right. Let's hold it.
605253
FLIGHT
CAPCOM, could he hold his maneuver until we finish the LOAD, please?
605312
CONTROL
FLIGHT, CONTROL.
605313
FLIGHT
Go.
605314
CONTROL
MIT recommendation for the maneuver to attitude is to use the TTCA rather than the auto-maneuver. Hand controller.
605322
FLIGHT
Okay. He's been doing that. We'll give it to him.
605324
CONTROL
Okay.
605531
GUIDO
FLIGHT, we're through with the LOAD. They can maneuver.
605533
FLIGHT
Okay.
605536
FLIGHT
And you want TTCAs, right? CONTROL? For the maneuver?
605543
CONTROL
Go, FLIGHT.
605544
FLIGHT
You want TTCAs for the maneuver, right?
605547
CONTROL
To the burn attitude. That's affirm.
605550
CONTROL
That is affirm, FLIGHT.
605623
FLIGHT
CAPCOM, FLIGHT. We're through with the LOADing. He can go ahead with his maneuver. We recommend he uses TTCA.
605631
FLIGHT
We recommend that, and we're through with the LOAD.
605647
FLIGHT
Okay. Everybody in the room, we're back on the checklist.
605656
FLIGHT
Do we want to -
605656
CAPCOM
Are you with us now, on the checklist?
605658
FLIGHT
Do we want to do the self-test? GUIDANCE?
605703
GUIDO
FLIGHT, we did check the E-MOD, his E-MEMORY was GO.
605706
FLIGHT
Do you want to do the self-test?
605711
FLIGHT
Page 6, Activation.
605713
GUIDO
The 2-hour Activation.
605714
FLIGHT
On the 2-hour Activation. Do you want to do the self-test?
605717
FAO
FLIGHT, FAO, you'll get behind if you do it.
605718
GUIDO
It's not - it's not required, FLIGHT.
605720
FLIGHT
Negative.
605721
CAPCOM
Okay, let's go. Let's get in and -
605722
FLIGHT
Let's go. Let's listen to the loop, and answer their questions.
605724
CAPCOM
Answer up on the checklist.
605725
FLIGHT
Negative, CAPCOM.
605736
FLIGHT
Page 7.
605752
TELMU
Affirmative.
605756
FLIGHT
Mmhmm.
605805
CAPCOM
Okay, everybody. We have - we're on page 9 now, right?
605807
FLIGHT
Yup. We scratched the VH - VHF. How about this LGC CMC clock sync T-ephems there, GUIDANCE?
605814
GUIDO
We've already taken care of that, FLIGHT.
605815
FLIGHT
Okay, already done.
605827
FAO
FLIGHT, FAO -
605828
FLIGHT
Go.
FAO
- they can pick up at the landing gear deploy at the bottom of 10.
605832
FLIGHT
Okay. Well, let's walk through it one piece at a time.
605840
FLIGHT
That's good, Spence, but I don't want to skip anything. Let's just let them go through it.
605843
CAPCOM
We need that landing gear out?
605845
FLIGHT
Yes. They want it out.
605851
CAPCOM
And we don't want the steerable.
  • Antenna.
605903
FLIGHT
CONTROL, you want that done, right?
605905
CONTROL
Affirmative.
605905
??
Affirmative.
605909
FLIGHT
Okay. Standby for landing gear.
605940
FLIGHT
Okay, let's watch the power when the - landing gear, there, gentlemen.
605946
TELMU
Okay, power's fine.
605956
TELMU
It looks like landing gear deployed from here, FLIGHT.
610017
CONTROL
You can scratch that.
610022
CONTROL
CONTROL concurs.
610026
CAPCOM
How about AGS?
610028
CONTROL
Delete AGS activation and self-test.
610030
FLIGHT
Okay.
610031
CAPCOM
- ?? complete.
610038
FLIGHT
That's correct.
610040
FLIGHT
And a target, right, GUIDANCE?
610043
FLIGHT
GUIDANCE, FLIGHT.
610045
GUIDO
Go, FLIGHT.
610046
FLIGHT
You got the target loaded also, right?
610047
GUIDO
Roger. He's got it.
610050
GUIDO
He's got it, FLIGHT.
610102
CAPCOM
How about you guys keeping ahead, here?
610107
CAPCOM
How about AGS align, FLIGHT?
610108
CONTROL
We don't need that.
610109
FLIGHT
No AGS align.
610112
CONTROL
Recommend we don't do that, FLIGHT. All we'd do is just close the DECA POWER breaker.
610116
FLIGHT
Okay. You don't want to do the test.
610118
CONTROL
Negative.
610148
CAPCOM
You ready for DPS pressurization and checkout?
610151
GUIDO
FLIGHT, GUIDANCE.
610154
CONTROL
Affirmative.
610154
FLIGHT
Yes.
610155
GUIDO
We need to configure the DAP.
610157
FLIGHT
What - what do you need?
610158
GUIDO
With what we read on the PAD.
610200
FLIGHT
Okay, does he - he doesn't do that, here?
610202
GUIDO
Step 2. Step 2.
610203
FLIGHT
Wait a minute. Step 2. Okay, yeah. Okay, page 14.
610208
CAPCOM
Okay.
610213
FLIGHT
Page 14. Okay.
610217
FLIGHT
How about 3, 4, 5, and 6, there? CONTROL? Although they -
610220
CONTROL
We don't need it. That's - part of - that's what we're deleting.
610224
FLIGHT
Steps 3, 4, 5, and 6?
610226
CONTROL
Right.
610233
FLIGHT
Wait. Wait a minute. We need to do step 2, right, GUIDANCE? Oh, okay. TTCA.
610238
GUIDO
Roger, FLIGHT.
610238
CONTROL
That's caught later on, FLIGHT. The TTCA to MIN.
610240
FLIGHT
Well - okay, but do we do it here? If we do it here, let's do it here.
610243
CONTROL
Okay, fine.
610243
FLIGHT
Yes, CAPCOM.
610245
CAPCOM
You want steps 2 and 3 on page 14.
610247
FLIGHT
No. Nope. They were discussing the last thing on page 13.
610251
CAPCOM
Oh, okay.
610251
FLIGHT
TTCA both throttle to MIN.
610254
CAPCOM
Okay.
610255
FLIGHT
Right? CONTROL?
610255
CAPCOM
Looks like they've got step 3, too.
610300
CONTROL
FLIGHT, CONTROL.
610301
FLIGHT
Go ahead.
610302
CONTROL
Okay - standby -
610306
CONTROL
Affirmative, FLIGHT. He needs to trim the gimbal, not the throttle.
610310
CONTROL
To trim the gimbal, in fact if you want to make it simple, just - you can do the DAP set, gimbal/throttle test steps 1, 2, and you've got it.
610321
FLIGHT
Okay. Do you want to do all of step 1 now, is that what you're saying?
610323
CONTROL
That just sets you up for step 2, that's affirm, FLIGHT.
610325
FLIGHT
Okay. CAPCOM, correction. They want to do all of step 1 and step 2.
610333
FLIGHT
Is that right, now, CONTROL?
610334
CONTROL
That's affirm, FLIGHT.
610335
FLIGHT
GUIDANCE, we're going to do all of step 1 and step 2. Got it?
610338
GUIDO
Roger.
610343
CONTROL
Okay. One other comment, FLIGHT. Down in step 5, he de-arms the DPS, okay?
610348
FLIGHT
Yes?
610349
CONTROL
He has to do that particular item.
610351
FLIGHT
Okay. Well, we're just getting there, we're going through them one at a time, 1 and 2. Okay? Watch him do step 2, there, GUIDANCE. When he gets to it.
610437
CONTROL
We can just go to PGNS MODE CONTROL to OFF.
610440
FLIGHT
To OFF?
610441
CONTROL
Yeah. It'll do the same thing.
610444
CONTROL
He's in MIN IMPULSE now, he shouldn't be firing any jets. Except when he hits the ACA.
610450
FLIGHT
Okay. Why can't he do it in AUTO? Why is this -
610454
CONTROL
Okay. If he goes to AUTO, he goes to an ATTITUDE HOLD mode.
610458
CONTROL
He'll fire jets to go to the attitude. Hold out the attitude he's in right now. Okay, that's no problem.
610505
FLIGHT
What do you want us to do, CONTROL? What do you want us to do?
610509
CAPCOM
You want an OMNI?
610510
CONTROL
Standby 1.
610517
FLIGHT
We're still hung up on step 1, near as I can tell.
610541
CONTROL
FLIGHT, from CONTROL.
610542
FLIGHT
Go ahead.
610543
CONTROL
Let's go to AUTO per the checklist.
610545
FLIGHT
Per the checklist, CAPCOM.
610549
CAPCOM
Okay. You want them to pull his TCA breakers so that he doesn't get any red flags - jets firing, that is?
610555
CONTROL
Well, what's the problem with jets firing?
610559
CONTROL
I don't see any problem with it. He's in a 5 degree deadband.
610603
FLIGHT
And the note expects it.
610605
CONTROL
Yeah.
610605
FLIGHT
And if he gets them it's okay.
610606
CONTROL
Yeah. Just do it per the checklist.
610608
FLIGHT
Okay.
610628
FLIGHT
CONTROL?
610629
CONTROL
Do that and stop.
610632
CONTROL
Go to AUTO and then stop, we'll take a look at it.
610634
FLIGHT
Go to AUTO and then what?
610635
CONTROL
And then stop. That's the question he asked. So he just wants to go to AUTO and then take a look at it.
610639
FLIGHT
Okay.
610641
FLIGHT
And then he gets the thruster firing, and then what?
610643
CONTROL
Okay, you see it - watch it settle down, and then - and then we proceed on to test.
610647
FLIGHT
Alright. That's what you want to do.
610649
CONTROL
Roger.
610650
FLIGHT
Got it, Jack?
610657
FLIGHT
Will they stabilize with the docked configuration all right?
610701
CONTROL
It should, FLIGHT. We've got the DAP set up for it.
610704
FLIGHT
Okay. Okay, let's watch it.
610712
CONTROL
We've got no firings, FLIGHT.
610714
FLIGHT
Okay.
610715
CONTROL
Proceed on the test.
610717
FLIGHT
We're ready to proceed.
610737
CONTROL
Getting a little thruster activity.
610740
FLIGHT
Y'all, GUIDANCE, down there, FLIGHT.
610742
GUIDO
Go.
610743
FLIGHT
You getting that GO, yet?
  • From MIT on the docked/hybrid burn configuration.
610745
GUIDO
Negative. We haven't received it yet, FLIGHT.
610746
FLIGHT
What's your estimate on it? We need it for the burn.
610749
GUIDO
We're getting it right now, FLIGHT.
610752
CAPCOM
Okay, you watch his loading?
610758
FLIGHT
GUIDANCE?
610759
GUIDO
Roger.
610759
FLIGHT
GO.
610807
CAPCOM
Okay, he's loading his gimbal now, let's watch him.
610810
FLIGHT
Okay, watch the gimbal trim there.
610813
CONTROL
Roger.
610825
FDO
FLIGHT, FDO.
610826
FLIGHT
Go ahead.
610826
FDO
Closest approach will be 136.5.
  • miles.
610829
FLIGHT
Thank you.
610842
CONTROL
FLIGHT, CONTROL.
610843
FLIGHT
Go.
610844
CONTROL
He needs to - on step 2, there, when he loads VERB 48 NOUN 46, the DAP load 32021, that was not correct on the DAP. He's got our old DAP mode in right now, he didn't put that in.
610854
FLIGHT
What do you want us to do?
610855
CONTROL
He should go per the checklist, 32021.
610858
FLIGHT
What - okay, where is that?
610900
CONTROL
Step 2, second line.
610901
FLIGHT
Okay.
610902
CONTROL
Page 14.
610903
FLIGHT
CAPCOM, you got that?
610914
CONTROL
Per the book.
610919
CONTROL
He can do that after he gets through the test, no problem.
610922
FLIGHT
Well, okay, but it's there for some reason.
610929
FLIGHT
FAO, how are we doing on time?
610931
FAO
FLIGHT, we are sitting alright. The only other thing we've got left is the DPS press. And -
610939
FLIGHT
And then we go into the 6 minute?
610941
FAO
That's right.
610941
FLIGHT
Alright.
610944
FLIGHT
Keep - keep track of us, here. Spencer, about -
610946
CAPCOM
Okay, you ready for the gimbal?
610947
FAO
Okay.
610947
CONTROL
Ready.
610948
FLIGHT
Ready for the gimbal.
610949
CONTROL
Right.
610955
CONTROL
Got DPS arm.
610957
CONTROL
And we're driving.
611001
CAPCOM
Okay, and one other point that's brought out here, we've got a 4-jet ullage loaded in the DAP, and we've got 2 in the PAD.
611009
FLIGHT
CONTROL?
611010
CONTROL
That's right, FLIGHT.
611011
FLIGHT
What do you want us to do?
611013
CONTROL
Standby on that.
611027
CONTROL
Okay, to get - to make it agree with the PAD, the DAP load would be changed to be 31021.
611032
FLIGHT
Well. Do you want to - why don't we just leave it the way it is?
611036
CONTROL
As far as I'm concerned we can leave it the way it is. If that's fine with FDO.
611037
FLIGHT
RETRO, FDO, you copy that?
611039
RETRO
Say again, FLIGHT?
611040
FLIGHT
You copy that? We're going to do a 4-jet. That's what we've got loaded. That alright with you?
611044
RETRO
Roger.
611046
FDO
Go with the way it is, then, FLIGHT.
611047
FLIGHT
Yeah. CAPCOM, mention that to him so he doesn't think of it later and get confused. We're going with the 4-jet, vice the 2-jet on the PAD.
611055
CAPCOM
Okay. Are we seeing his gimbal go where it's supposed to?
  • In this case, the DPS engine gimbal; the test ensures that it can move about as expected.
611057
CONTROL
Yes. It's over against the stop and coming back now.
611100
FLIGHT
Still on our way.
611101
CAPCOM
Okay.
611133
CONTROL
We're GO on the trim.
611139
CONTROL
FLIGHT, CONTROL.
611139
FLIGHT
Go ahead.
611139
CONTROL
Trim looks okay.
611140
FLIGHT
Okay.
611144
FLIGHT
Looks good.
611203
CAPCOM
What numbers did we actually read out?
611206
FLIGHT
How close were they?
611207
CONTROL
We're within about 0.3. We're - plenty close.
611212
CONTROL
Roger. We're ready.
611213
FLIGHT
The what? Wait a minute, didn't you want the engine arm off?
611217
CONTROL
It is off.
611217
FLIGHT
Okay. Everything else is okay? Steps 3, 4, 5, and 6?
611222
CONTROL
From what I can see, it is.
611226
CAPCOM
Alright. You're ready for pressurization -
611227
FLIGHT
You don't have any question about that, then, do you? CONTROL?
611229
CONTROL
No. Looks fine.
611230
FLIGHT
Alright. Yeah, we're ready.
611235
FLIGHT
Are we coming up on another OMNI?
611311
CONTROL
Pressurized, FLIGHT.
611313
FLIGHT
Okay. Keep your eye on it, okay?
611320
CONTROL
Looks good.
611322
FLIGHT
Okay.
611340
CONTROL
Delete that, FLIGHT.
611341
FLIGHT
Delete all of it?
611342
CONTROL
Affirmative.
611346
FLIGHT
Yeah. We delete it all, CAPCOM.
611351
CAPCOM
How's the DPS look?
611352
CONTROL
Looks fine.
611406
FLIGHT
Okay, everybody. We are holding at about the 6 minute point in the checklist.
611410
CAPCOM
Okay, at the bottom of page 15, we've got a new DAP. We've got 31021. You want that in there?
611415
CONTROL
That's what put us in a 2-jet boot, FLIGHT. That will put us in 2-jet system boot for the ullage.
611419
FLIGHT
Okay. But -
611422
CONTROL
Just leave it alone.
611423
FLIGHT
Yeah. We'll leave it where it is, Jack.
611424
CONTROL
Roger.
611425
FLIGHT
We told him 4 jets, that's what he's got.
611427
CAPCOM
Roger.
611428
FLIGHT
And we - we - has he passed page 15?
611430
AFD (off loop)
Yeah. He's right here -
611431
FLIGHT
He's on 16 now, right? Yeah, he's into it. GUIDANCE, FLIGHT -
611435
GUIDO
Go, FLIGHT.
FLIGHT
- I'm waiting for that GO.
611437
GUIDO
We watched his P30 here, it looks good.
611439
FLIGHT
Yeah, I know. But have you got somebody talking to MIT?
611441
GUIDO
They're still talking to them, haven't got an estimate yet.
611444
FLIGHT
Well, we have 15 minutes to the burn.
611447
FLIGHT
CONTROL, FLIGHT.
611448
CONTROL
Go.
611448
FLIGHT
How do I do this burn if I get a NO GO on - DAP control?
611453
CONTROL
Okay, standby 1, I'll give you a rundown on that, FLIGHT, put my thoughts together.
611457
FLIGHT
Yeah.
611458
GUIDO
FLIGHT, GUIDANCE.
611459
FLIGHT
Go.
611500
GUIDO
I'd recommend going ahead and doing this burn if we don't hear from MIT. They feel it'll work, without the run.
611512
GUIDO
Everybody feels that it will work.
611516
FLIGHT
Okay, well what do we do during it if it looks funny, is my question?
611524
GUIDO
During the burn?
611525
FLIGHT
Yeah.
611542
FLIGHT
CONTROL, FLIGHT.
611544
CONTROL
Go ahead.
611546
FLIGHT
PGN - okay, you want to do a PGNS AUTO or TTCA?
611549
CONTROL
TTCA, FLIGHT.
611550
FLIGHT
TTCA, CAPCOM. We recommend TTCA to the attitude.
611557
FLIGHT
With a TTCA.
611605
FLIGHT
INCO, what's our OMNI for this burn attitude?
611609
INCO
FORWARD.
611611
FLIGHT
Does he have it on there now?
611611
INCO
He's there now.
611612
FLIGHT
Okay.
611615
CAPCOM
That attitude doesn't look like what I've got on the PAD, here.
611624
CAPCOM
FLIGHT?
611625
FLIGHT
Yeah.
611625
CAPCOM
You like that attitude?
611626
FLIGHT
I'm looking at it. Standby.
611634
FLIGHT
GUIDANCE, FLIGHT. You copying that?
611637
GUIDO
What's on the ball right now?
611640
FLIGHT
What angles are you looking at, CAPCOM? You looking at the ball angles?
611644
CAPCOM
I'm looking at all of them. I'm looking at what he's got on the 50 18 on the DSKY, and also what he's got on the FCDUs -
  • VERB 50, NOUN 18, the auto-maneuvering command.
611652
GUIDO
FLIGHT, the pitch and roll look great. The yaw - the only reason it looks different is just because he's sitting there right now.
611700
FLIGHT
Sitting where?
611702
GUIDO
With the attitude he's at presently. The pitch and yaw - and roll are correct.
611708
FLIGHT
Yeah. On the DSKY. Is that right?
611712
GUIDO
Right.
611713
FLIGHT
Yeah. The FDAI is different.
611715
GUIDO
FLIGHT, we're looking at the FCDUs and they're correct.
611718
FLIGHT
Mmhmm. How about yaw? That's the one that's out yet? And is he moving in that axis?
611722
GUIDO
Yaw doesn't matter, FLIGHT, that's about the thrust vector. That's just where he happens to be.
  • One will note, however, that the engine gimbal setting is probably particular to the yaw angle, particularly if they have no TVC.
611726
CAPCOM
Okay, are we ready -
611727
GUIDO
It's not constrained - it's not constrained in yaw.
CAPCOM
- for him to maneuver in the attitude we gave him in the -
611729
FLIGHT
Yup.
611731
FLIGHT
Do you want him to go to a particular yaw?
611734
FLIGHT
GUIDANCE?
611735
GUIDO
Negative, FLIGHT.
611737
FLIGHT
We okay on the OMNI? That we're on?
611745
FLIGHT
INCO, we okay on this OMNI?
611747
INCO
Yes. The OMNI they're on will be good.
611749
FLIGHT
Okay. GUIDANCE and CONTROL, FLIGHT.
611750
GUIDO
Go ahead.
611751
CONTROL
Go, FLIGHT.
611751
FLIGHT
I still have a question as to what you want me to do if somehow or other something turns up in the guidance during this burn.
611757
GUIDO
Okay, I have the recommendation, FLIGHT.
611759
FLIGHT
And it is?
611800
GUIDO
Okay, with tur - setting up the burn, we would turn the ENGINE GIMBAL switch to OFF, we'd go to PGNS ATT HOLD, MIN IMPULSE on the - on the -
611811
FLIGHT
Wait a minute. ENGINE GIMBAL - this - wait a minute. We're in the burn, and this is what you -
611814
GUIDO
Oh. This is during the burn you're talking about?
611816
FLIGHT
Well -
611816
GUIDO
Okay.
611817
FLIGHT
That's when this started. What do you want me to do for -
611819
GUIDO
Okay. If he's in the burn, they'd go ENGINE GIMBAL off and just use the TTCA to hold attitude. And then as he can, to turn the MODE CONTROL switch to ATT HOLD.
  • It's exactly the same recommendation.
611834
FLIGHT
MODE CONTROL to ATT HOLD.
611836
GUIDO
Roger.
611846
FLIGHT
In that order?
611848
GUIDO
Yeah. ENGINE GIMBAL off, MODE CONTROL to ATT HOLD, and utilize the TTCA.
611854
FLIGHT
Okay. So you changed the order.
611857
GUIDO
Well, this MODE CONTROL to ATT HOLD, he can do that - he should do that as soon as he can, but that - the most important thing is he get attitude control, and he has to do that with the TTCA. So it'll probably be a simultaneous thing.
611908
FLIGHT
Okay.
611908
CAPCOM
Okay, FLIGHT. Now, you verify his attitude?
611911
FLIGHT
GUIDANCE? You verify his attitude is okay?
611916
GUIDO
He's not at attitude yet, FLIGHT.
611919
FLIGHT
Is he moving?
611920
GUIDO
Roger. He is moving. When he gets there, he'll be in good shape.
611923
FLIGHT
Is there any way we can check this now, is there a star out of his window or anything?
611927
GUIDO
We're running this - right now, we're running to see if there is a star available at the attitude he's maneuvering to.
611932
FLIGHT
Alright. Hurry up.
611933
GUIDO
There wasn't at the other atti - previous one that we had.
611936
FLIGHT
Alright.
611937
GUIDO
But he's at a different - going to a different yaw, so we're checking it.
612025
FAO
FLIGHT, FAO.
612026
FLIGHT
Go.
612027
FAO
If we don't get to attitude soon, we're going to be running behind here.
612033
FLIGHT
Okay. How far away are we?
612035
FAO
I'm in the same boat as -
612038
FLIGHT
GUIDANCE, what are the DP - IMU attitudes that are on the DSKY that we're looking for?
612043
FLIGHT
GUIDANCE?
612044
GUIDO
The IMU?
612046
FLIGHT
What attitude will you read on the DSKY when he's in-attitude?
612051
GUIDO
15.7 -
612052
FLIGHT
CDU.
GUIDO
- is yaw. Pitch is 178.1, and roll is 4.47.
612100
FLIGHT
How far away is he?
612101
GUIDO
He's just about there. He's right there now, FLIGHT.
612106
CAPCOM
We got any physical reference he can use?
612108
FLIGHT
Okay. Have you seen any star yet?
612114
FLIGHT
Okay.
612116
CAPCOM
Verify the attitude?
612117
FLIGHT
GUIDANCE, you like the attitude?
612120
GUIDO
Looks good, FLIGHT. The attitude looks good.
612127
FLIGHT
Sun is out the forward window. That pretty much obscures a star.
612136
FLIGHT
GUIDANCE, FLIGHT.
612137
GUIDO
FLIGHT, GUIDANCE.
612138
FLIGHT
Have you got anything on confirming the attitude?
  • It's important to remember that the crew still have not been able to perform any kind of alignment on the LM, so they are still counting on the previous platform alignment they transferred over from the CSM, which may have drifted for about a dozen reasons.
612142
GUIDO
Negative, FLIGHT. The only star available is star 86, there.
  • There is no star 86. He is most likely referring to star 46 - the Sun.
612148
GUIDO
FLIGHT, MIT will not have a run on this thing.
612152
FLIGHT
Okay, now - but it is the judgement that it is okay to use?
612155
GUIDO
Roger.
612156
FLIGHT
It is. Alright.
612157
GUIDO
It's the judgement of the software people it's GO - it's good.
612201
GUIDO
That it'll be alright.
612214
GUIDO (off loop)
That's right.
612220
CONTROL
FLIGHT, CONTROL.
612221
FLIGHT
Go.
612221
CONTROL
Okay. Could we possibly look ahead here and get some of these done so it doesn't get too crowded right by the start of the burn? There's a couple of items that need to be taken care of.
612229
FLIGHT
Like what?
612230
CONTROL
Well, we need to get THROTTLE CONTROL to MANUAL; he's in AUTO right now. It's over right - in the 4 minute segment. And we need to get VERB 65 in.
612240
FLIGHT
Okay, what's the matter with him going through the nominal checklist?
612242
CONTROL
Okay.
612242
FLIGHT
He's in attitude, we're at the 6-minute point -
612244
CONTROL
Okay. Very good.
FLIGHT
- that's comfortable. I don't want to change anything, Hal.
612247
CONTROL
Okay.
612310
FLIGHT
CAPCOM, FLIGHT.
612313
FLIGHT
CAPCOM, FLIGHT.
612315
CAPCOM
Go.
612315
FLIGHT
Jack, your opinion: think it would be worth reviewing that if he sees any kind of rates or anything to go ENGINE GIMBAL OFF, MODE CONTROL ATT CONTROL - ATTITUDE HOLD, and TTCA? You think it's worth reviewing with him?
612329
FLIGHT
To finish the burn?
612335
CAPCOM
I don't think it would hurt it to talk it over with him.
612337
FLIGHT
Okay.
612343
CONTROL
That's affirm.
612344
FLIGHT
Affirmative.
612355
TELMU
FLIGHT, TELMU.
612356
FLIGHT
Go.
612356
TELMU
For your information, our water rate's dropped down a little in our favor.
612400
FLIGHT
Thank you.
612403
CAPCOM
FLIGHT? CAPCOM.
612406
FLIGHT (off loop)
Yeah, I just mentioned it to him.
612408
FLIGHT
Who's calling?
612409
CAPCOM
CAPCOM's calling -
612410
FLIGHT
Yeah.
CAPCOM
- I noticed on page 17, MANUAL THROTTLE -
612424
FLIGHT
CONTROL?
612426
CONTROL
Standby 1, FLIGHT.
612427
FLIGHT
Top of page 18.
612433
CAPCOM
He's right.
612434
CONTROL
Negative, FLIGHT.
612435
FLIGHT
No need for that, Jack.
612442
CONTROL
FLIGHT, while he's going through that, you might flag him on page 17 -
612445
FLIGHT
Yes?
CONTROL
- THROTTLE CONTROL AUTO should be THROTTLE CONTROL MANUAL.
612449
FLIGHT
Okay.
612450
CONTROL
And you can delete PQGS turned on at the bottom.
612453
FLIGHT
Okay. CAPCOM, you got that? THROTTLE CONTROL in the middle of that stuff at 4 minutes -
612501
GUIDO
FLIGHT, GUIDANCE.
612502
FLIGHT
How much - how much you want ullage?
612505
CONTROL
We can just let it go ahead and start ullage automatically now, FLIGHT.
612507
FLIGHT
We'll let it go automatically, Jack.
612509
GUIDO
FLIGHT, GUIDANCE.
612509
FLIGHT
Go.
612510
GUIDO
He needs to go ahead and hit ENTER on his program and proceed on the P40.
612514
FLIGHT
Okay. He needs to do an ENTER and proceed on, CAPCOM.
612518
FLIGHT
At this time, or - ?
612518
GUIDO
Just an ENTER, FLIGHT. Just an ENTER.
612522
GUIDO
Oh, he did it, FLIGHT. Standby.
612539
FLIGHT
And propellant quantity down at the bottom, don't worry about it. It's not on.
  • The relevant display.
612541
CAPCOM
No big deal.
612542
FLIGHT
Yeah.
612548
FLIGHT
CAPCOM, would you read them up that takeover?
612552
FLIGHT
If you have it, there. Here it is if you don't.
612602
CONTROL
ENTER, FLIGHT.
612604
FLIGHT
You ready to ENTER?
612604
CONTROL
Right. Do an ENTER.
612605
FLIGHT
ENTER.
612609
CAPCOM
He said, "what is it?"
612615
FLIGHT
What did he say?
612619
CAPCOM
He said, "what is it?"
612620
FLIGHT
What is it, GUIDANCE?
612621
GUIDO
It's for AUTO THROTTLE, FLIGHT.
612623
FLIGHT
It's for AUTO THROTTLE. That doesn't say much to me, GUIDANCE, but -
612630
FLIGHT
We burn MANUAL, you know, GUIDANCE.
612631
GUIDO
He's gotta manual-throttle the thing, FLIGHT.
612633
FLIGHT
Yes.
612634
CONTROL
He needs to put his throttle to MIN, also, FLIGHT.
612639
FLIGHT
Throttle to MIN.
612640
CONTROL
Yes. He's at 29% now, roughly.
612643
FLIGHT
Okay. CAPCOM, he needs to put his -
612644
CONTROL
Standby, disregard that.
612645
FLIGHT
Okay.
612646
CONTROL
I can't tell; he hasn't armed the DPS yet, but he needs to confirm that he does have it at MIN.
612650
FLIGHT
Okay.
612712
FLIGHT
Won't that - CONTROL, FLIGHT.
612715
FLIGHT
ATTITUDE HOLD and TTCA, won't that fight itself?
612718
CONTROL
Negative. He's in MIN IMPULSE, FLIGHT. He goes ATT HOLD, it turns the jets off.
612721
FLIGHT
Alright.
612730
CAPCOM
Okay. How are you set up for 2 minutes?
612733
FLIGHT
What's that Tig counting down to, GUIDANCE, the ullage?
612738
GUIDO
Negative, FLIGHT. Engine ignition.
612741
FLIGHT
Okay. What is - why is our clock counting a different number up there?
612744
GUIDO
For the time delay, FLIGHT, from -
612746
FLIGHT
That's an awful big one.
GUIDO
- you're reading his DSKY.
612749
FLIGHT
Plus, he's ahead of us.
612751
GUIDO
Yeah, he is ahead of us.
612756
RETRO
FLIGHT, RETRO. I've got an ignition time of 1:47. 1:45.
612801
FLIGHT
Is he loaded correctly?
612808
FLIGHT
Say again? GUIDANCE or RETRO? Is he loaded correctly?
612812
FLIGHT
That's the question.
612812
?? (off loop)
The Tig is right.
612813
GUIDO
Tig is right, FLIGHT.
612814
FLIGHT
On board. Thank you.
612817
GUIDO
Wall clock is wrong, FLIGHT.
612818
FLIGHT
Thank you.
612823
CAPCOM
Okay, how do you like his configuration at 1 +30?
612825
FLIGHT
CONTROL, everything okay with you?
612828
CONTROL
We haven't seen the VERB 65, but that's okay if he doesn't get it.
612833
FLIGHT
You satisfied with the throttle, or is he not armed yet?
612835
CONTROL
He's not armed yet, FLIGHT.
612837
FLIGHT
Alright.
612841
FLIGHT
GUIDANCE, okay?
612842
GUIDO
We're good, FLIGHT.
612843
FLIGHT
CONTROL. Okay?
612844
CONTROL
We're okay, FLIGHT.
612845
FLIGHT
TELMU?
612846
TELMU
We're GO, FLIGHT.
612847
FLIGHT
INCO, okay?
612849
INCO
We're good, FLIGHT.
612850
FLIGHT
All good here at 1 minute.
612913
CONTROL
Still on VERB 65, FLIGHT.
612917
FLIGHT
Do you want to tell them?
612919
CONTROL
Yes. Tell him we need ENGINE ARM. He's got it. We're at low throttle point.
612924
FLIGHT
We need a VERB 65 ENTER.
612925
CONTROL
- -
612926
FLIGHT
Is that what you're telling me, CONTROL?
612927
CONTROL
Disregard.
612928
FLIGHT
Thank you.
612941
CONTROL
We have ullage.
612950
CONTROL
We have ignition, low throttle point.
612956
CONTROL
40 percent.
612958
CONTROL
Rates look good.
612959
FLIGHT
Rates are holding good, huh?
613001
CONTROL
Looking okay, FLIGHT.
613002
FLIGHT
Okay.
613016
CONTROL
Still looking good.
613023
CONTROL
Shutdown.
613024
FLIGHT
Yeah.
613026
CAPCOM
Okay, how about what's left over?
613030
FLIGHT
Any requirement to trim?
613034
GUIDO
- - trim, FLIGHT.
613035
FLIGHT
Trim to what?
613037
GUIDO
0.2.
613038
FLIGHT
Well. Kind of hard to do that.
613043
FLIGHT
That's good, isn't it?
613045
GUIDO
That's good enough.
613045
FLIGHT
Good, CAPCOM.
613059
FLIGHT
Yes.
613106
TELMU
FLIGHT, TELMU. He should - MASTER ARM OFF.
613108
CONTROL
And he can go back to MIN IMPULSE when he desires, FLIGHT.
613111
FLIGHT
Okay. Well now, he's got to go through a number of things, right?
613113
CONTROL
Roger.
613121
FLIGHT
Okay, CONTROL. The next question is what control mode, if any, do you want to be in, here? Work with the back room. Do we want to try to set up some kind of PTC in AGS or are we just going to power down, let this thing drift?
613132
CONTROL
Okay. Let me pull my thoughts together for a minute, Glynn.
613134
FLIGHT
Yeah. Okay, but you have somebody work that -
613137
CONTROL
Yes. Roger.
FLIGHT
- I want you to watch the configuration, here.
613202
INCO
FLIGHT, INCO.
613203
FLIGHT
Go ahead.
613204
INCO
You got a minute to talk?
613205
FLIGHT
Just a minute.
613206
INCO
Okay.
613207
CONTROL
FLIGHT, from CONTROL.
613210
FLIGHT
How are we doing? Are we getting configured MASTER ARM?
613212
TELMU
No. We've still got the MASTER ARM ON.
613213
FLIGHT
Yeah, you'd better have them take the MASTER ARM OFF. CONTROL, anything for configuration?
613218
CONTROL
The only thing I might recommend, if he wants to - is a VERB 76 but I'm happy with the way it is right now.
613224
FLIGHT
Okay. We're going to turn the PGNS down here, pronto.
613227
CONTROL
Yeah, we've got to get the AGS turned up, though - and I've got the procedure here to give -
613230
FLIGHT
Well, now, do we? Have to get it turned up?
613235
CONTROL
Standby.
613236
FLIGHT
How about just drifting?
613238
CONTROL
If that's -
613239
FLIGHT
Well, that's what I'm asking you to check.
613240
CONTROL
Yeah, okay. But let's not turn the PGNS off right quick-like. Let me check for you.
613252
FLIGHT
That's what we're going through right now.
613304
INCO
FLIGHT, INCO.
613305
FLIGHT
Go ahead.
613306
INCO
If you're going to do something with powering down, you'd better do it quick, because I'm going to have to make you do a handover here, and it's probably going to cost you COMM for at least 5 minutes.
  • Between MSFN ground stations, as the Earth rotates.
613314
FLIGHT
How soon? Are you going to have to hand over?
613317
INCO
Well, the handover's going to have to go on here in about - 12, 13 minutes.
613321
FLIGHT
Okay.
613321
INCO
And we want to turn off the receiver - transceiver for 5 minutes up here.
613400
FLIGHT
FDO, FLIGHT.
613401
FDO
Go, FLIGHT.
613402
FLIGHT
Do you have any requirement for the PGNS anymore?
613405
FDO
Negative.
613406
FLIGHT
I'm not turning it down now. Look - - - go ahead.
613410
FDO
Go ahead.
613411
FLIGHT
The current situation is - is that we're checking about the PTC. We had - do we have an AGS procedure for setting up a PTC now? CONTROL? That people think might work?
613423
FLIGHT
CONTROL, FLIGHT.
613424
CONTROL
Go ahead, FLIGHT.
613425
FLIGHT
Do we now have a procedure that people think might work in AGS?
613428
CONTROL
Negative. Do not.
613429
FLIGHT
We don't have a procedure?
613430
CONTROL
Not right now. In AGS, for PTC.
613436
FLIGHT
Well. It all rapidly gets academic, then, huh?
613440
CONTROL
That's right.
613444
CONTROL
Standby 1, FLIGHT.
613447
FLIGHT
Jim's checking to see what he wants to tell us about PTC -
613449
CONTROL
We're getting input from SPAN, it looks like no issue here - there's no PTC required.
613453
FLIGHT
Okay, well, we'll wait and see in a minute. If that's so, there's no need in powering the AGS up.
613456
CONTROL
That's right.
613458
FLIGHT
We're waiting for them.
613502
FLIGHT
Okay, and if that's the case, then we'll go ahead down. The only reason I'm delaying powering the PGNS down is to be sure we don't need the AGS. It sounds like we don't know how to use it anyway, but I - give them 2 minutes and we ought to know for sure.
613514
CONTROL
FLIGHT, CONTROL.
613514
FLIGHT
Go ahead.
613515
CONTROL
As I understand it, we're doing another burn at roughly 79 hours?
613518
FLIGHT
Say again?
613518
CONTROL
Are we doing another burn at 79 hours?
613520
FLIGHT
Plan on that. Yes. I don't know whether we are or not -
613522
CONTROL
How are we going to get alignment?
613524
FLIGHT
Plan on that.
613529
FLIGHT
Can you turn off the thrusters -
613531
CONTROL
Affirmative, then he can go MODE CONTROL OFF, whatever he desires.
613536
CONTROL
Stand - standby on that, FLIGHT. Standby on that.
613537
FLIGHT
He asked if he could turn off the thrusters.
613538
CONTROL
Standby on that. One moment, FLIGHT.
613543
CONTROL
FLIGHT, from CONTROL.
613544
FLIGHT
Go ahead.
613544
CONTROL
The reason I ask: if we turn everything down now, and then do another burn at 79 hours, how are we going to get our alignment?
613549
FLIGHT
Yeah, I know. I know.
613555
FLIGHT (off loop)
When is that?
613556
FLIGHT
FAO, when is the shadow of the Moon that we might get a P51 and 2?
613600
FAO
Okay, FLIGHT. Standby and we'll look at that.
613604
FLIGHT
TELMU, FLIGHT. How much does it cost me to keep the AGS up, as a coarse reference?
613611
TELMU
That's going to cost -
613611
FLIGHT
How many pounds of water? And how many amps?
613614
FLIGHT
Say again? Ed?
613655
CONTROL
FLIGHT, CONTROL.
613657
FLIGHT
Go ahead.
613658
CONTROL
Some items that we can actually pull right now and save some power that they don't need is the ATCA breaker, and the DECA GIMBAL and the DECA breaker.
613705
FLIGHT
Now wait a minute. We don't want to be out of attitude control, do we?
613708
CONTROL
That won't - I won't put you out of attitude control.
613713
FLIGHT
Okay. That's right. That's the -
613714
CONTROL
If you - if you want to save some power right now. We may have to put them back in later when we go to AGS, but -
613721
FLIGHT
Okay, which ones were they?
613722
CONTROL
The ATCA on CB 16, and the DECA GIMBAL and DECA POWER.
613732
FLIGHT
Yeah. We can sure turn those off.
613733
CONTROL
Roger. I suggest we do that.
613736
FLIGHT
Let's start with the DECA ones, huh?
613738
CONTROL
Okay.
613740
FLIGHT
CAPCOM, while we're going through this subject, two items for power conservation would be the DECA GIMBAL and POWER circuit breakers on panel - 16? 11.
613750
CONTROL
11 for the DECA GIMBAL and DECA POWER. ATCA is on panel 16.
613758
FLIGHT
What control now do I have if I turn off the ATCA (PGNS) circuit breaker?
613802
CONTROL
Not ATCA (PGNS). Just ATCA.
613804
FLIGHT
Oh, okay. The ATCA on panel 16, huh?
613808
CONTROL
Roger.
613808
FLIGHT
Okay. There are a couple of power items.
613810
CONTROL
Yes.
613810
FLIGHT
While we're figuring out what to do.
613812
CONTROL
Right.
613832
??
Y'all, one thing you can do -
613849
CONTROL
Okay. We confirm they're open, FLIGHT.
613900
FDO
FLIGHT, FDO.
613921
FLIGHT
GUIDANCE, FLIGHT.
613923
FLIGHT
GUIDANCE -
613924
GUIDO
Go, FLIGHT.
613925
FLIGHT
Can you give us star - ball angles, I should say, for a COAS star check in the shadow?
613935
GUIDO
Yeah.
613935
FLIGHT
Pronto.
613937
GUIDO
In the Moon shadow?
613938
FLIGHT
No. No, in the shadow of the vehicles. Looking away from the Sun.
613953
FLIGHT
GUIDANCE, can you get one of those in a hurry? That would give us a check on the reference before we do something with it.
614000
CAPCOM
How about - how about the idea he just gave us about using the Command Module optics in manual? To find stars?
614007
FLIGHT
Well, we can do that now - what's our objective here, to check the platform again?
614017
FLIGHT
I mean, we can do a lot of things. I want to know why we want to do something.
614039
INCO
FLIGHT, INCO.
614040
FLIGHT
Go ahead.
614041
INCO
Okay, look, I'm running out of time.
614042
FLIGHT
Yeah. I know.
614043
INCO
Well, we've got to do a handover here. We don't have any choice. To try to make it as quick as possible, I want to turn down the transceiver for 5 minutes, let us push the IU out of the way, and then bring up the carrier after 5 minutes, when it comes on we'll be able to distinguish the LM. That's the quickest way we know how to try to do it. And we hope it works better than last time.
  • This is the base frequency that the transceiver locks onto.
614107
FLIGHT
Okay. Well you gotta hand over now, do you?
614108
INCO
We don't have any choice. It's going to be one way or another - it's either going to be the hard way or the easy way. I can't guarantee either way.
614115
FLIGHT
Okay. I wish I knew what we wanted to do, here, before we lost COMM.
614120
CONTROL
FLIGHT, CONTROL.
614122
FLIGHT
Go ahead.
614123
CONTROL
I've got a recommendation.
614124
FLIGHT
Go ahead.
614141
FLIGHT
EECOM? We gave him a GO on that, didn't we? He probably didn't hear it. Hook up the side hatch urine dump.
614146
EECOM
Has he got - has he got it hooked up now?
614148
FLIGHT
We don't know. He was -
614149
EECOM
If he hadn't -
614153
FLIGHT
Oh, you don't want to?
614159
FLIGHT
What do you want him to use?
614201
EECOM
Use the normal procedure. Let - - let me explain that.
614206
INCO
FLIGHT, INCO. I've got a degree left. That's it.
  • Before the current dish hits its tracking limit.
614208
FLIGHT
CAPCOM, we're going to have a loss of COMM here while we switch stations. Let them know that, will you?
614213
INCO
FLIGHT, that's not what I want to do. I want him to turn the transceiver OFF for 5 minutes.
614217
FLIGHT
Okay.
614221
FLIGHT
CAPCOM, have him turn off the S-BAND transmitter/receiver.
614225
INCO
5 minutes.
614225
FLIGHT
5 minutes.
614227
CONTROL
FLIGHT, CONTROL.
614229
FLIGHT
Can you wait, CONTROL?
614229
CONTROL
Roger.
614236
FLIGHT
He has to turn off the S-BAND transmitter for 5 minutes while we do a site handover with this COMM situation.
614241
INCO
Transceiver.
614257
FDO
FLIGHT, FDO.
614258
FLIGHT
Go ahead.
614259
FDO
Okay, confirmed burn shows -
614301
FLIGHT
- - FDO, stand by a minute.
614303
FDO
Roger.
614303
FLIGHT
Unless you've got a problem.
614304
FDO
No problem.
614315
INCO
That's affirmative.
614330
FLIGHT
CONTROL, FLIGHT.
614331
CONTROL
Go ahead, FLIGHT.
614345
CONTROL
Affirmative.
614350
CONTROL
That's good enough. That's real good.
614350
CAPCOM
You ready for the TRANSMITTER/RECEIVER?
614353
FLIGHT
You ready for that? They're ready.
614355
INCO
GO.
614355
CAPCOM
On - turn it off now?
614356
INCO
Roger.
614356
FLIGHT
Go ahead, for 5 minutes.
614407
INCO
He doesn't have to touch the POWER AMPL. Just the TRANSMITTER/RECEIVER, and he'd better hurry.
614444
FLIGHT
They want to get some kind of roll attitude going if possible. CONTROL, FLIGHT.
614448
CONTROL
Go ahead, FLIGHT.
614449
FLIGHT
Can you figure out if we point the thing north, can you give us a mode in the AGS that we can set up a low roll rate?
614457
CONTROL
Yeah, we can come up with one, FLIGHT.
614459
FLIGHT
Could I have - could I ask for a little quiet in the room, please? It's getting awful noisy in here.
614505
CONTROL
We can work on that, but I've got something in my mind here, that I think we ought to do first.
614508
FLIGHT
Okay. And that is?
614509
CONTROL
And that is to bring the PGNS - bring the AGS up, take the PGNS alignment to it, turn that PGNS off.
614514
FLIGHT
Yeah.
614516
CONTROL
We're eating power.
614516
FLIGHT
Yeah.
614518
CONTROL
We can do that now.
614519
FLIGHT
Okay. As soon as we get the COMM.
614521
CONTROL
And I've got the procedure for doing it.
614522
FLIGHT
Bring it over, please.
614829
FLIGHT
FAO, FLIGHT.
614831
FAO
Go ahead, FLIGHT.
614832
FLIGHT
When are we going to have the timing that we're in the Moon shadow?
614836
FAO
I'm trying to find out from FDO now, when he's going back to reference with it, FLIGHT.
614840
FLIGHT
Okay. Pronto, okay? As soon as you can?
614843
FAO
Roger.
614844
FDO
FLIGHT, FDO.
614845
FLIGHT
Go ahead.
614846
FDO
Would you like some post-burn data?
614849
FLIGHT
Yes.
614850
FDO
Okay. Closest approach 136.75.
614854
FLIGHT
That's based on the confirmed maneuver?
614856
FDO
That's affirm.
614857
FLIGHT
From the PGNS.
614858
FDO
That's affirm.
614900
FDO
We've got a gamut entry interface of -6.53.
614905
FLIGHT
Okay. I'm - with - that's all coming out nominal, then.
614908
FDO
Roger. What's even better is that the doppler is within 7 cycles.
  • From the ground tracking station.
614914
FLIGHT
So you think the doppler confirms it.
614916
FDO
The doppler says that we're - we did the right things, that's affirm.
614918
FLIGHT
Alright.
614955
FLIGHT
FDO and FAO, when are you going to have the time for me when we're behind the Moon?
  • The idea here, first mentioned some minutes ago, is to give the crew some stars to check while the Moon is between them and the Sun, and thus when the glare problems they are having should be minimal. This would also be pretty close to the PC+2 burn at roughly 79 +30 hours, minimizing the length of time the platform must be maintained.
615058
INCO
Hold on a second now, Jack.
615100
FLIGHT
- - you're on my loop, Ed.
615116
FLIGHT
What's the conclusion? We can keep the IMU up?
615127
FLIGHT
And we've got the water?
615132
?? (off loop)
Well, we may have to turn off some other things.
615150
FLIGHT
TELMU, FLIGHT.
615151
TELMU
Go, FLIGHT.
615152
FLIGHT
Are you guys coming together with what's being discussed up here for a recommendation - I'm being told that we could conceivably leave the IMU up in the LM - turn the LGC, I guess, OFF right now, leave the IMU up, and power down post-PC+2 DPS burn.
615212
FLIGHT
Are you involved in all that?
615213
TELMU
Yeah. I have to look at the total load, there, of course. We've been kind of involved with the EPS concern.
615218
FLIGHT
Bill Peters has been in - Bill, would you, quick, tag in now -
615221
Gold TELMU
Okay.
FLIGHT
- I'd like, quickly, to know what you want done.
615241
INCO
FLIGHT, INCO.
615242
FLIGHT
Go ahead.
615243
INCO
Have at it.
615351
FLIGHT
TELMU, FLIGHT - gentlemen, it's getting noisy in the room.
615354
TELMU
Go ahead, FLIGHT.
615355
FLIGHT
Let's keep down the conversations.
615409
CONTROL
FLIGHT, CONTROL.
615412
FLIGHT
Okay. Go ahead. Calling, FLIGHT.
615414
CONTROL
One - CONTROL. One thing to consider, Glynn, is if we do this, we're going to have to have - implement a method of keeping them out of gimbal lock.
615423
FLIGHT
I guess they're just going to have to watch it.
615424
CONTROL
He's got nothing to watch on board. We're powering everything down.
615427
FLIGHT
No, we're going to leave the IMU up.
615429
CONTROL
Okay. Got to leave the inverters up, then.
615431
FLIGHT
Okay, well that's what I'm waiting for TELMU to tell me.
615434
CAPCOM
We need a DAP load to conserve RCS.
615438
FLIGHT
A DAP load to conserve RCS, CONTROL.
615443
CONTROL
Okay. He wants it right now?
615446
FLIGHT
Yeah.
615447
CAPCOM
Right now.
615502
CONTROL
FLIGHT, CONTROL.
615502
FLIGHT
Go ahead.
615503
CONTROL
Recommend he goes VERB 76 MIN IMPULSE, and then keep his eye on the middle gimbal angle.
615509
FLIGHT
Okay. Is that all you've got to tell them for the DAP?
615510
CONTROL
Yeah, the DAP load's okay. But he needs to go MIN IMPULSE.
615514
FLIGHT
Okay.
615515
CONTROL
VERB 76. And keep an eye on the middle gimbal angle.
615519
FLIGHT
TELMU, FLIGHT.
615521
TELMU
Go, FLIGHT.
615521
FLIGHT
I guess I kind of need to know, here, as much as you do -
615525
TELMU
Roger.
FLIGHT
- if we're okay to leave the IMU up and we can swing it. Then I'd just as soon do that.
615531
TELMU
Yeah. I think that's the way it's looking right now.
615533
FLIGHT
Okay, how long will it take you to conclude that?
615537
TELMU
Just a couple more minutes.
615558
CAPCOM
Do we have a PAD for 79 hours?
615601
FLIGHT
Not yet, I'm sure.
615620
FLIGHT
Okay, gentlemen. The proposal before the room right now is to turn down the LGC and to pick up all the rest of the smaller power items we can. Leave the IMU up; TELMU's within a few minutes of -
615631
TELMU
Yeah.
FLIGHT
- coming in on that subject.
615633
TELMU
We can - we can do that, FLIGHT, with the IMU up and the AC. It looks like it would probably -
615638
FLIGHT
The AC. You mean one ball. Okay. Is that what you mean?
615641
TELMU
Yeah. Inverters. Yeah. Looks like also it would probably be cheaper, power-wise, to turn the steerable on, if we could get COMMs attention here - INCO.
615650
FLIGHT
INCO, you up?
615651
INCO
Yes.
615652
TELMU
Turn the steerable up, since we've got the AC anyway, and power down the POWER AMPL.
615658
FLIGHT
Is that cheaper?
615659
TELMU
It's cheaper power-wise.
615700
FLIGHT
INCO, is that okay with you?
615702
INCO
We'll give it a try.
615704
FLIGHT
That gives us kind of - spotty coverage, doesn't it?
615707
INCO
We're going to have to get into a different attitude.
615709
FLIGHT
We're going to have to roll.
615711
INCO
That's right. We're going to have to get out of the attitude we're in.
615714
FLIGHT
Can you do it on the high-gain, or - you can't switch OMNIs anyway.
  • Remotely.
615718
FLIGHT
But we've got a guy awake.
615719
INCO
He'll have to do it for us.
615720
FLIGHT
We've got a guy awake anyway.
615723
FLIGHT
Well -
615726
FLIGHT
Will we get high-gain coverage, and then we'll drop off, is that what'll happen?
615729
INCO
Yeah, it'll go at the end of blockage or gimbal limits and he'll have to switch to an OMNI.
615733
FLIGHT
Recommend something to me, will you? How many amps do we save?
615736
TELMU
FLIGHT, we'd just save about an amp and a half, so it's not a -
615740
FLIGHT
And it's not a - it's not a coolant item. It's not a water item, is it?
615741
TELMU
No.
615742
FLIGHT
Alright, I'm - let's let that go for tonight anyway. Maybe we'll figure something clever out tomorrow night.
615746
TELMU
Okay, FLIGHT.
615749
FLIGHT
Okay, TELMU. Have you concluded on this LGC?
615754
TELMU
We're going to leave the IMU up, right?
615755
FLIGHT
Yeah, but the computer you want to go down? If we want that, let's get on with it.
615759
FLIGHT
CONTROL, FLIGHT.
615800
CONTROL
Go ahead, FLIGHT.
615801
FLIGHT
You ready? You and TELMU, are you together there -
615803
CONTROL
Yeah, I'm trying to get - get my ducks in a row with him right now, FLIGHT. Standby.
615808
GUIDO
FLIGHT, GUIDANCE.
615809
FLIGHT
Go ahead.
615810
GUIDO
You asked a while ago about some stars. I've got some - I picked out some stars to look - if you - I don't know if he wants to do any maneuvering - the maneuver, it's 180 degrees from the Sun. To center the COAS.
615822
FLIGHT
Okay. Well, standby with it.
615847
CONTROL
FLIGHT, from CONTROL.
615848
FLIGHT
Go.
615849
CONTROL
Did we just tell him to power the computer down?
615850
FLIGHT
No, we're just advising on what the plan's going to be.
615852
CONTROL
Oh, okay.
615853
FLIGHT
But we're waiting.
615854
CONTROL
Yeah, okay.
615956
FLIGHT
TELMU and CONTROL, have you got there yet?
615958
TELMU
Roger, FLIGHT.
615959
CONTROL
Roger, FLIGHT.
620000
FLIGHT
You're GO to power the LGC down?
620000
CONTROL
Right.
620001
TELMU
Yeah. LGC and IMU.
620003
FLIGHT
What do you want to do? Pull the circuit breakers?
620005
TELMU
Standby.
620005
FLIGHT
Did you give me something on it? I think Bob Carlton did, didn't you, Bob?
620009
CONTROL
You said power down or power up?
620011
FLIGHT
Down.
620013
CONTROL
Oh.
620016
FLIGHT
CONTROL?
620017
CONTROL
Yeah.
620017
FLIGHT
I'm talking - we're going to leave the IMU up, then. Are you ready to proceed and power the computer down?
620022
CONTROL
Negative! I do not want to power the computer down.
620024
FLIGHT
Now why not?
620025
CONTROL
I'm being told that we can leave it up for the sleep period and it will keep their attitude for them, keep them out of gimbal lock.
  • Lunney must be near the end of his rope here.
620033
FLIGHT
The computer also?
620034
CONTROL
Yes. That's what I've been told. The LGC.
620042
FLIGHT
Okay. So you'd tell them to leave the computer up also, huh?
620045
CONTROL
Affirmative.
620045
FLIGHT
And that's okay on the profile?
620047
TELMU
That's affirmative.
620049
TELMU
It's about 22 amps total.
620051
FLIGHT
And what kind of control mode do you see them being in, here tonight?
620054
CONTROL
Okay, just in a 5 degree deadband ATTITUDE HOLD.
620058
FLIGHT
Wait a minute. We don't want to be in ATTITUDE HOLD. We want to roll - oh, you want to let roll go?
  • FLIGHT's thinking about a PTC.
620102
CONTROL
You can't let roll go. It's going to be an ATT HOLD.
620107
FLIGHT
Okay, but - Hal, can we fly ATT HOLD the whole time? We're going to burn something up!
620113
CONTROL
I've got the question in, I haven't got an answer on it yet, FLIGHT.
620118
CONTROL
The tentative answer I got was we did not require any PTC.
620124
CONTROL
Yeah, the only problem, Glynn, if - in the other mode, if we just leave the platform up, we may drift through gimbal lock and that would defeat the purpose of leaving it up.
620132
FLIGHT
We have a guy sitting there watching it! We're going to keep a guy up!
620137
CONTROL
Okay. And we'll have to leave the inverters on also, then.
620139
FLIGHT
Yeah!
620140
CONTROL
Okay.
620141
FLIGHT
That's - that was what I thought you were talking about!
620143
CONTROL
Negative. I was out of step with you, FLIGHT. Sorry.
620145
FLIGHT
And we'll set up a roll manually, and we'll let them watch it and we'll do the best we can like we did for Apollo 8.
620149
CONTROL
Okay. If he does it that way, he'll have to use hard-over command on the ACA to stop any perturbations, then.
  • DIRECT.
620157
CONTROL
ATTITUDE DIRECT CONTROL breaker has to be in. Yes, use hard over on the ACA.
620227
CONTROL
FLIGHT, CONTROL.
620231
CONTROL
FLIGHT, CONTROL.
620237
FLIGHT
Go ahead, CONTROL.
620239
CONTROL
Glynn, recommend we go ahead and power the LGC down, leaving the inverter on so we can get an attitude reference off the platform, and leaving - let the guy use the ACA to keep us out of gimbal lock.
620252
FLIGHT
And set up whatever he can in the way of a -
620255
CONTROL
It'll be a PTC, it'll be a pilot yaw -
620257
FLIGHT
Yeah.
CONTROL
- okay? But he's gotta watch his roll.
620301
FLIGHT
He's gotta watch the middle gimbal.
620302
CONTROL
Roger. The middle gimbal.
620303
FLIGHT
Yeah. Okay. Now is that the conclusion and is that - presumably good on the power profile and I want to see that profile by the way, TELMU? You copying what we're doing?
620314
TELMU
Go.
620315
FLIGHT
We're going to put the LGC down and leave an eight-ball up and let them fly it, set up whatever he can with body yaw.
620322
TELMU
Roger.
620322
FLIGHT
Is that - is that the conclusion?
620325
FLIGHT
And you've got a power profile that says I'm okay to do that?
620327
TELMU
Right.
620328
FLIGHT
And you're going to show that to me.
620330
TELMU
Right.
620330
FLIGHT
Now, we're going to proceed then with the LGC power down. What do we do, pull the circuit breaker?
620336
FLIGHT
Did you hand me that paper? I think we gave it to you, did we Jack?
620340
CONTROL
Is that the paper Carlton brought up?
620341
FLIGHT
Yeah. Let - let me see.
620342
CONTROL
That wasn't - that's not what you want, now.
620344
FLIGHT
No, it isn't. You're right.
620347
FLIGHT
You're right. What do I want to pull to power down the LGC?
620357
CONTROL
Okay, you need PROGRAM 6, and then pull the PNGS LGC/DSKY breaker on panel 11.
620405
FLIGHT
You mean put it in PROGRAM 6 -
620407
CONTROL
Yeah.
FLIGHT
- and pull the LGC/DSKY -
620409
CONTROL
PROGRAM 6, hit a PRO.
620412
FLIGHT
Okay.
620412
CONTROL
And then pull, on CB11, the PNGS: LGC/DSKY breaker.
620417
FLIGHT
Okay.
620417
CAPCOM
Do you have a procedure written down in the purpose checklist? G&N dictionary, and if we can refer to it, why I think that would be the way to do it.
620429
FLIGHT
Do you got it there, Spence?
620435
FLIGHT
Okay, does everybody copy what we're doing? TELMU, FLIGHT.
620439
TELMU
Go, FLIGHT.
620440
FLIGHT
Would you check with SPAN one more time and be sure they're satisfied with what we're doing, we'll do the best we can to set up a body yaw and let the awake guy watch it. Okay? Could you check on them, be sure they understand what we're doing?
620452
TELMU
Roger.
620507
FLIGHT
GUIDANCE and FAO, FLIGHT.
620508
GUIDO
Go, FLIGHT.
620509
FLIGHT
Would you let me - give me the ball angles for the pilots to go nose North? CSM nose North?
620516
GUIDO
CMS nose North. Will do.
620518
FLIGHT
That is PTC.
620547
CAPCOM
You ready for me to give them the LGC powerdown procedure -
620549
FLIGHT
Let me get a GO here. CONTROL, you ready? TELMU, I mean - you ready? To get - TELMU, FLIGHT.
620557
FLIGHT
TELMU, FLIGHT.
620558
TELMU
Go, FLIGHT.
620559
FLIGHT
Does SPAN know what you're doing and agree?
620601
TELMU
I can't get in touch with them right now.
620612
INCO
FLIGHT, INCO.
620613
FLIGHT
Go ahead.
620614
INCO
We're ready to give a try at the POWER AMPL and the LOW BIT RATE and the DOWN VOICE BACKUP if you want to try it.
620619
FLIGHT
Wait a minute. Let me get my attitude and everything squared away.
620622
INCO
Okay.
620624
FLIGHT
Having a hard time getting people to agree with the procedure. TELMU, CONTROL, would you get - to see if the people agree with what we're doing?
620632
CONTROL
Say again, FLIGHT?
620633
FLIGHT
I'm trying to get the SPAN people to agree with the course of action we have here.
620636
CONTROL
I can't get a hold of them, FLIGHT.
620637
FLIGHT
LGC OFF, and try to set up a body yaw, and let a man up to watch it.
620643
CONTROL
Roger.
620644
FLIGHT
Can we hustle?
620645
CONTROL
Roger.
620653
FLIGHT
And GUIDANCE, I'm standing by for some ball angles from you.

Apollo 13 Real-time

What you are about to hear is the Mission Control Flight Director's Loop for the first six hours following the Apollo 13 accident.

You will hear the strength and style of leadership of both Gene Kranz and Glynn Lunney, the legendary Flight Directors on-shift during the accident. You will hear problems develop, symptoms get diagnosed, red herrings get chased, and issues get resolved. You will experience the tight teamwork, grace under pressure, endless resourcefulness, and extensive knowledge of the flight controllers on the ground and the crew on-board the spacecraft.

By listening to this real-time playback of the events following the incident, you will come to understand the workings and realities of Apollo spaceflight. Systems are powered up and down, maneuvers and burns are executed, communication is lost and gained, and tricky navigation is performed—all a part of daily Apollo life. And in understanding the workings of the spacecraft more deeply, you will gain an appreciation for how brutally simple yet elegant Apollo was, and what a blunt instrument it was that we sent hurtling through the heavens.

You can jump straight into the recording, or you can peruse the primer first to learn more about Apollo.

Credits

Cryogenic Tanks Quantity O₂ 1 2
O₂ Press Ind
Tank 1 Surge Tank
Cryogenic Tanks Pressure O₂ 1 2
O₂ Flow LB/Hr

Overview

Apollo 13 Real-time is an interactive experience featuring the audio from the Flight Director's Loop and the Air-Ground Loop. This audio was generously made available online through the efforts of John Stoll of NASA Johnson. The first six hours following the accident are available. In addition to the audio, each loop has been transcribed and will play automatically alongside what you hear. Finally, the interactive glossary and this exhibits section should provide enough context for any interested layperson with some memory of basic secondary school physics to be able to understand what's going on.

The Loops

The Flight Director's Loop is a rare gem. Mission Control was wired with numerous audio loops, which you can think of as internal radio channels. Each Flight Controller had their own loop, one for every station you see in the Mission Control Room, which connected them to a back room of their peers who could help them spot, diagnose, and solve problems. The most important, however, was the Flight Director's Loop, to which everybody listened and upon which the most critical questions and decisions were raised and made.

The Air-Ground Loop audio is the actual radio link between Houston and the Apollo spacecraft. With rare exception, only CAPCOM, typically themself an astronaut, was allowed to speak to the astronauts. You will hear decisions get made on the Flight Director's Loop and subsequently passed up on the Air-Ground Loop.

The Exhibits

Copious reference material is provided here. If you are brand-new to Apollo, browsing through the Primer section is highly-recommended. The Overview section provides a somewhat deeper look at various aspects of flying Apollo to the Moon, and will prove helpful if you get stuck understanding the relationship between technical terms and systems while listening to the audio. The Reference Manual section provides even further detail on particular technical subsystems, for those who are interested in understanding exactly what the various switches and valves controlled.

Creating Installations

It is easy to create a kiosk installation of this application, which adjusts the layout for optimal full-screen display on a television, or presents only the exhibit and reference material. For more information, see the readme.

Credits

It is commonly remembered that a request to stir a cryogenic oxygen tank with a fan caused a short in the wiring, literally sparking a fire that quickly developed into an explosion. This is really all the knowledge required to understand the proceedings of the audio here. But we will dig a little bit into the details here for those who are curious for more.

{{figure:o2-tank}}

The cryogenic tank in question was actually originally slated for Apollo 10. It is somewhat generally known that the tank was dropped (about a distance of 5cm/2in), but this was only one step in a long chain of misfortunes that led to the accident. The tank was pulled from Apollo 10 and shelved as result of the drop, but it seemed to work properly upon requalification testing, and so it was installed on Apollo 13.

Only then was it discovered during a pre-flight check about a month before launch that the tank wouldn't drain quite properly due to the drop. This wasn't really a problem for flight, during which the drain was not used, and the technicians proposed to simply boil the undrained oxygen off with the heaters built into the tank. Commander Lovell was asked to okay this procedure, and nobody involved had a problem with it (particularly as replacement would have delayed launch by around a month), and so the operation proceeded.

But the heater was designed to operate off the 28 volt on-board power supplied by the spacecraft, whereas the launchpad systems supplied 65 volt power. The latter was a change made during Apollo's development, and all involved manufacturers were told to ensure either voltage worked, but someone at the tank manufacturer literally didn't get the memo. So while the heaters ran, the overvoltage cooked all the electrical components, including the safety switches that would normally shut the heater off to keep the tank within safe temperatures. Thus, instead of the 27°C (80°F) maximum temperature, the tanks reached a blistering 500°C (1,000°F). This excessive temperature warped and cracked the Teflon insulation protecting the wiring inside the tank.

The timing of the explosion was also an unhappy accident. The tanks' depletion was measured with pressure and temperature sensors, but the slurry-like cryogenic gas within the tank would stratify over time, requiring a stir to redistribute the contents evenly again for measurement. This was typically done in the astronauts' morning, after their sleep period. Unfortunately, the sensors in tank 2 had proven faulty and possibly unreliable. Not fully trusting them, the flight controllers requested an extra measurement before bed, primarily to measure the tank 1 depletion as a way of judging tank 2's state. This meant that it was a harried, tired crew of astronauts that had to deal with the aftermath, instead of a just-rested trio fresh from sleep.

When the fateful call came and the spark was ignited, the equivalent force of 7 pounds of TNT blasted out of the tank and through the Service Module, sending the craft spinning, damaging many unrelated but proximate components, and jarring many valves closed that had been open—and vice versa. It was this very last fact that would later clue Kranz into the severity of the problem.

Fundamentally, the act of traversing outer space to reach the Moon involved being able to point in a particular direction, and apply acceleration in that direction. On Apollo, this was done by the three available main engines, and the Reaction Control System.

Engines

All rocket engines involve a violent chemical reaction of some kind and a way of directing the output of that reaction in a particular direction. As a consequence of this, they also involve the storage of at least two chemical propellants to react. Typically, one chemical is a fuel and the other is an oxidizer. All the engines on board the Apollo spacecraft itself involved hypergolic fuels which ignited spontaneously upon mixing. This simplified the many restart ignitions the engines would have to perform in space, but hypergolic fuels are highly hazardous and corrosive, making them difficult to handle and in some cases making it impossible to actually test the engine before launch.

The propulsion system on the Service Module (called the Service Propulsion System or SPS), the Lunar Module descent engine (called the Descent Propulsion System, DPS), and the Lunar Module ascent engine (Ascent Propulsion System, APS) all burned a fuel mixture of hydrazine and UDMH, and an oxidizer of nitrogen tetroxide. These chemicals are exactly as unpleasant as they sound, but they are stable as liquids at a variety of temperatures, which makes them low-maintenance once in orbit.

Reaction Control System

{{figure:rcs}}

Of course, the spacecraft still needs to be able to orient itself in between burns. This is necessary for a variety of reasons, including communications, thermal control, and avoiding gimbal lock. This task is accomplished via the Reaction Control System (RCS), a series of small jets carefully positioned around the spacecraft to allow precise control of all three attitude axes: pitch, roll, and yaw. In addition, by selectively determining which jets to fire the RCS system could also be used to provide translational rather than rotational force—that is, it could push the spacecraft around rather than turn it. These jets used the same nitrogen tetroxide oxidizer as the main engines, but burned monomethylhydrazine (MMH) fuel instead. Each of the fuel and oxidizer had a primary and a secondary tank for redundancy.

Jets could be fired by the Digital Autopilot (DAP) or by manual crew input. Crew input could either (typically in relatively extreme circumstances) directly engage the solenoids to fire the thrusters, or could be filtered through various selectable input modes via the Stabilization Control System (SCS) to tailor the system to different circumstances. Min Impulse mode, for instance, would fire each jet only once for a 15 millisecond burst each time the stick was pushed.

Ultimately, whether by DAP, SCS, or Direct engagement, the jets were fired by engaging electric solenoids in each propellant feed line that allowed the pressurized propellants to mix and react. Heaters on the lines kept the chemicals from freezing and warmed them to an optimum temperature for reaction.

Mission Profile

{{figure:burn-profile}}

An Apollo mission involved quite a few precision burns. Following launch, the biggest ones were Trans-Lunar Injection (TLI), which brought the spacecraft from a largely circular Earth orbit into a highly elliptical orbit which could reach the Moon, Lunar Orbit Injection (LOI), which recircularized the orbit around the Moon once the spacecraft arrived, and Trans-Earth Injection (TEI), which was the inverse of Trans-Lunar Injection, bringing the spacecraft home.

However, a number of midcourse correction burns (MCCs) were also important, correcting errors in the orbit at predetermined times on the way to and from the Moon. As many as seven midcourse corrections would be executed as necessary. Sometimes they were omitted, and sometimes the required ΔV was small enough to be simply carried out by the RCS system rather than the SPS.

Anatomy of a Burn

{{figure:pad}}

Trajectories and burns would be calculated on mainframes on the ground based on tracking data, and the relevant figures would be transmitted to Mission Control and then to the crew in space in a format called a PAD. The PAD would include, amongst other things, time of burn, attitude, and duration. Prior to a burn, the crew would fine-align the platform with a P52, and run through a checklist of tasks to power up and prepare the various systems needed for the burn.

Just before ignition, the RCS system would fire to push the spacecraft forward and thus the propellants to the back of the tank where the feed lines were; this was known as ullage and could be performed automatically by the computer. In fact, the burn itself was typically performed by the computer, and many of the PAD figures were provided for the purpose of computer input via the DSKY.

After completion of the burn, the spacecraft's tracking and telemetry would be evaluated, and based on the resulting residual errors the crew would sometimes be asked to perform a trim, a small additional adjustment to account for any small errors in the burn process. A checklist would then be followed to power everything back down again, realign the platform with a star check yet again, and resume normal spacecraft operation.

This entire process was typically scheduled to take around two hours.

Utility
COAS Power Off
Power Off
B CN Lt Hi B CN Lt Lo
Dye Marker
Vent
High LowOff
20
30
40
50
0
1
2
3
4
6
8
10
Apex Cover
Alt ×1000
Main Chute
Ring Set
5
4
3
2
1
EMS Test
Off
δV
δV
Test
Entry
V₀ Set
Normal Stby ModeBackup
Master Alarm
CMC Att
IMU GDC
Accel
G
-1 0 2 4 6 8 10 12 14
Abort
44
Min
32
Sec
LV Rate
SII Sep
LV Guid
LV Engines
4
1
5
3
2
FDAI Scale Select
Err Rate 50/15 50/10
1/2 21
CMC Att SetGDC
Att Set
IMU GDC
Manual Attitude
Roll Accel CmdRate CmdMin Imp
Pitch
Yaw
Limit Cycle Off
Att Deadband
Max Min
Rate
High Low
Trans Contr
Pwr Off
Manual Attitude Normal AC/DC
1 Off
2
AC Direct MNA/MNB
1 MN A
2 MN BOff
SC Cont
CMC SCS
CMC Mode
Auto HoldFree
LVα/SPS Pc
0
25
50
75
100
125
150
LV Tank Press SII Fuel/SIVB Oxid S-IVB Fuel
50
40
30
20
10
0
4
2
0
2
4
50
40
30
20
10
0
4
2
0
2
4
50
40
30
20
10
0
10+1
10+1
Lift Off
No Auto Abort
LES Motor Fire
Canard Deploy
CSV/LV Sep
Apex Cover Jett
Drogue Deploy
Main Deploy
CM RCS He DUMP
BMAG Mode Attitude Set
Roll Rate 2Att 1
Rate 2
Rate 1
Pitch
Yaw
SPS Thrust Direct On Normal
Direct Ullage
Thrust On
δV Thrust — Normal — — Off —
A
B
350
Roll
350
Pitch
350
Yaw
GDC Align
SCS TVC
Pitch AutoRate CmdAccel Cmd
Yaw
SPS Gimbal Motors —Start— Pitch Yaw —Off—
1
2
1
2
δV CG
LV/CSM CSM
ELS
Logic Off
Auto Man
CM RCS
Logic Off
CM Prplnt
Dump Off
Purge Off
IMU Cage
Entry Off
EMS Roll
.05G
LV/SPS Ind
α Pc
SII/SIVB GPI
TVC Gmbl Drive 1 2
Pitch
Yaw Auto
FCSM Reset/Override
SPS A
SPS B
Event Timer
Reset Down
Start Stop
-Tens- —Units—
Min
Sec
  • BMAG 1 Temp
  • BMAG 2 Temp
  • CO₂ PP Hi
  • Pitch Gmbl 1
  • Yaw Gmbl 1
  • Hi Gain Ant Scan Limit
  • Pitch Gmbl 2
  • Yaw Gmbl 2
  • Cryo Press
  • Glycol Temp Low
  • CM RCS 1
  • CM RCS 2
  • SM RCS A
  • SM RCS B
  • SM RCS C
  • SM RCS D
  • SPS Flange Temp Hi
  • FC 1
  • FC 2
  • FC 3
  • SPS PU Snsr
  • Inv 1 Temp Hi
  • Inv 2 Temp Hi
  • Inv 3 Temp Hi
  • SPS Press
  • SPS Rough Eco
  • AC Bus 1
  • AC Bus 3
  • FC Bus Disconnect
  • AC Bus 1 Overload
  • AC Bus 2 Overload
  • Crew Alert
  • Mn Bus A Undervolt
  • Mn Bus B Undervolt
  • Uplink Actv
  • Temp
  • No Att
  • Gimbal Lock
  • Stby
  • Prog
  • Key Rel
  • Restart
  • Opr Err
  • Tracker
Comp
Acty
Prog
Verb
Noun
VerbNoun
EntrRset
+789Clr -456Proc 0123

Key
Rel

O₂ Flow in H₂O LB/Hr
A
B
Docking Probe
Extd/Rel OffRetract
Retract 2
Prim
Sec
Exterior Lights
Run/EVA Off
Rndz Spot
Tunnel Lights Off
LM Pwr
CSM OffReset
SM RCS Temp Pkg Press He Sec Fuel PRPLNT QTY
He TK TEMP
°F
3
2
1
0
×100
PSIA
5
4
3
2
1
0
×1000
400
300
200
100
0
PSIA
PSIA
CM RCS He TEMP Press He MANF
SM RCS Helium 1
A
B
C
D
Mission Timer Hours Min Sec — Tens — — Units —
Cryogenic Tanks Pressure H₂ 1 2 O₂ 1 2 Quantity H₂ 1 2 O₂ 1 2
Caution/Warning
Normal BoostAck
CSM CM
1 2
Power
Lamp Test
Msn Timer Start Reset
Open Close
RCS Indicators
1
CM
2
A
B
SM
C
D
Helium 2
A
B
C
D
Cabin Fan Off
1
2
— On — H₂ Heaters Auto
1
2
O₂ Heaters Auto
1
2
O₂ Press Ind
Tank 1 Surge Tank
— On — H₂ Fans Auto
1
2
O₂ Fans Auto
1
2
Up Tlm CM IU Accept Block
CM RCS Press
SM RCS Ind
He TK TEMPPrplnt QtY
Open Close
ECS Indicators
Prim
Sec
ECS Radiator Temp Prim/Sec Prim Sec Gly Evap—Prim/Sec—Gly Disch Temp Steam Press Press
Inlet Outlet °F °F
Outlet °F °F
PSIA PSIG
Temp Suit Cabin
°F
8
6
4
2
×10
12
10
8
6
4
Press Suit Cabin Part Press CO₂
Prim Prplnt
A
B
C
D
SM RCS Heaters A B C D Prim Prim Sec Sec
Off
Open Close
ECS Radiators Flow Cont
Auto 2
Pwr Man Sel Mode
Man Sel
Rad 1 Rad 2
Heater
Prim 1 Prim 2
Sec Off
Suit Compr δP Lb/H2 PSI
Accum Prim/Sec H₂O Quantity % ×10 %
CM RCS Prplnt
Sec Prplnt
RCS
Cmd On Off
Trnfr On Off
Off
1
2
Open Close Sec Prplnt Fuel Press SM RCS
A
B
C
D
Pot H₂O Htr
MN A OffMN B
Suit Circuit H₂O Accum 1 1
Auto Auto
On On
Heat Exch
On Bypass
Sec Coolant Loop Pump
Evap Reset
AC 1 AC 2
H₂O Qty Ind
Pot Waste
Glycol Evap Temp In
Auto Man
Steam Press
Auto Man
Incr Decr
H₂O Flow
Auto On
Cabin Temp
Auto Man
Auto
EDS Auto Off
CSM/LM
1—Final
Sep—2
CM/SM SEP
1
2
SIVB/LM Sep
Abort System
Prplnt Dump Auto RCS Cmd
2 Eng Out
Auto Off
LV Rates
Auto Off
Twr Jett Auto
1
2 Off
Launch Vehicle Guidance
IU CMC
SII/S-IVB LV Stage Off
XLunar
Inject Safe
Main Release
High Gain Antenna Track
Auto ManReacq
Beam
Wide MedNarrow
Pitch S Band Ant Yaw
Deg -90 0 +90
Tune for Max
Deg 90 180 270
Pitch Position
+90°
-90°
Yaw Position
90°
180°
270°
High Gain Ant Servo Elec
Power StbyOff
Prim Sec
VHF Antenna
Left
Right
SM
Recv
SPS Prplnt Tank Temp Press He Fuel Oxid Fuel Cell Flow H₂ O₂ Module Temp Skin Cond Exh
°F
20
15
10
5
0
×10
PSIA
5
4
3
2
1
0
×10
pH Hi
FC Rad Temp Low
SPS Engine Injector Valves A Close
1
2
B Open
3
4
Fuel Cell Radiators
1
2
3
— Normal — — Emer Bypass —
Master Alarm
Fuel Cell Indicator
1
2
3
Fuel Cell Heaters — Off —
1
2
3
DC Amps
0
20
40
60
80
100
Fuel Cell Main Bus A
Fuel Cell Purge 1 2 3 — H₂ — — O₂ —
Off
— Off —
1
2
3
Reset Off
DC Volts
20
25
30
35
40
45
SPS He VLV
Fuel Cell Reactants
Main Bus B
DC Indicators
Bat Bus
A
B
Bat
Charger
Bat C
Pyro Bat
A
B
Fuel Cell
1
2
3
Main Bus
A
B
Battery Charge
Off
A
B
C
Auto On
1 Off
2
SPS Line Htrs
A/B N₂
A
A
Press Ind
He N₂ B
— Off —
1
2
3
— Off —
1
2
3
Reset Off
S Band Normal Xpndr
Prim OffSec
Pwr Ampl
Prim Sec
High Low
Mode
Voice Relay
PCM Key
Ranging Off
S Band Aux
Tape Dn Voice Bu
TV SCI
Up Tlm
Data Up Voice Bu
Cmd Reset NormOff
Pwr Ampl
Tape Motion
AC Inverter 1
MN A Off
2
MN B Off
3
MN A OffMN B
S Band Antenna Omni
A BC
Omni Hi Gain
Squelch A
Squelch B
VHF AM A Duplex B Simplex
Rcv Only
On Off
VHF Ranging Off
AC Bus 1 — Off —
1
2
3
Reset Off
AC Volts
90
100
110
120
130
FC Reacs Valves
Norm Latch
H₂ Purge
Line Htr Off
Tape Recorder
PCM/Anlg LM PCM
Record Play
Fwd Rewind
Power SCE Norm Aux
PMP
PCM Bit Rate
High Low
AC Bus 2 — Off —
1
2
3
Reset On
AC Indicator
Bus 1
øA
øB
øC
Bus 2
øA
øB
øC
9 9 9
% Oxid
9 9 9
% Fuel
6 4 2 0 2 4 6 Incr Decr LBs ×100
Oxid Unbal
Test 12
Oxid Flow Valve
Incr MaxNorm MinDecr
Prim Sec
Pug Mode
Prim Aux
Docking Target
Bright DimOff
Utility
Power Off
Coas Power On
554611
CDR
Roger. Sounds good. And this is the crew of Apollo 13 wishing everybody there a nice evening, and we're just about ready to close out our inspection of Aquarius and get back for a pleasant evening in Odyssey. Good night.
554630
CAPCOM
Thank you, 13.
554840
CAPCOM
Apollo 13, Houston. The next thing we'd like you to do is to -
554845
CMP
Go ahead.
CAPCOM
- we'd like you to roll right to 060 and null your rates for photography of the Comet Bennett. To do that, we would like you to enable quads C and D. For the maneuver, use all your quads. And in precisely 1 minute, we'd like you to terminate the battery charge on battery B. One other request, we'd like to have you verify -
554913
CMP
Okay. Will do.
554914
CAPCOM
One other request, we'd like you to verify your high gain configuration. We'd like to know what track mode, what SERVO, and what BEAM WIDTH.
554925
CMP
Okay, Jack. During the TV we were AUTO TRACK, NARROW BEAM WIDTH, and the PRIMARY ELECTRONICS. And we had a good lockup. Just after we started the maneuver, I was able to lock you up and get real good signal strength, and it just seemed that right there at about 239° in yaw, that the signal strength would just drop off and yaw would go to 0 and pitch would go to 90.
555005
CAPCOM
Roger. We copy, and the TV show was great.
555012
CMP
Okay, real fine. Okay, I'm going to maneuver to 060, 090, and 0.
555031
CAPCOM
And 13, we'd like you to check C-4 thruster.
555134
CMP
Okay, Jack. The battery charge has been terminated on battery B.
555138
CAPCOM
Roger. We see it, Jack. And we've got a reading of -2° on the docking index. We'd like to know if that's 2.0 precise or if it's 2.1 or 1.9.
555154
CMP
No. It's -2.0 precisely.
555157
CAPCOM
Thank you.
555259
CAPCOM
13, we've got one more item for you, when you get a chance. We'd like you to stir up your cryo tanks. In addition, I have shaft and trunnion -
555307
CMP
Okay.
CAPCOM
- for looking at the Comet Bennett, if you need it.
555312
CMP
Okay. Standby.
555520
LMP
Okay, Houston -
555520
CDR
I believe we've had a problem here.
555529
CAPCOM
This is Houston. Say again, please.
555535
CDR
Houston, we've had a problem. We've had a MAIN B BUS UNDERVOLT.
  • Not "we have a problem," as in the film. The scriptwriters felt the present tense was more appropriate.
  • The first reading that the MAIN B electrical bus was dead. It would never recover.
555543
CAPCOM
Roger. MAIN B UNDERVOLT.
555559
CAPCOM
Okay, standby, 13. We're looking at it.
555610
LMP
Okay. Right now, Houston the voltage is looking good. And we had a pretty large bang associated with the CAUTION AND WARNING there. And as I recall, MAIN B was the one that had an amp spike on it once before.
555640
CAPCOM
Roger, Fred.
555654
LMP
In the interim here, we're starting to go ahead and button up the tunnel again.
555701
CAPCOM
Roger.
555704
LMP
Yes. That jolt must have rocked the sensor on - I see now - Oâ‚‚ QUANTITY 2; it was oscillating down around 20 to 60 percent. Now it's full-scale high again.
555721
CAPCOM
Roger.
555730
CDR
And Houston, we had a RESTART on our computer. We have PGNCS light and RESTART RESET.
555738
CAPCOM
Roger. RESTART and a PGNCS light. RESTART and a PNGCS RESET -
555742
CDR
Okay. And we're looking at our SERVICE MODULE RCS HELIUM 1, we have B is barber poled and D is barber poled. HELIUM 2, D is barber pole. And SECONDARY PROPELLANTS I have A and C barber pole. BMAG temperatures -
555807
LMP
Okay, AC 2 is showing zip. I'm going to try to reconfigure on that, Jack.
555813
CAPCOM
Roger.
555825
LMP
We got a MAIN BUS A UNDERVOLT now too, showing.
555830
CAPCOM
MAIN A UNDERVOLT.
555833
LMP
It's reading about 25.5. MAIN B is reading zip right now.
  • volts. 29 volts was nominal.
555933
CDR
And Houston, Odyssey.
555938
CAPCOM
Standby 1, Jim.
560034
CAPCOM
13, Houston. We'd like you to attempt to reconnect fuel cell 1 to MAIN A and fuel cell 3 to MAIN B. Verify that quad Delta is open.
560054
LMP
Okay, Houston. I'm showing - I tried to reset and fuel cell 1 and 3 are both showing grey flags, but they're both showing zip on the flows.
560108
CAPCOM
We copy.
560317
LMP
Okay, Houston. Are you still reading - 13?
560321
CAPCOM
That's affirmative, we're reading you. We're trying to come up with some good ideas here for you.
560329
LMP
Okay. Let me give you some readings - in the interim to help MAIN A voltage, Jack. I've got BUS TIE AC on.
560337
CAPCOM
Say again, Fred.
560342
LMP
In the interim, to help out MAIN A voltage, I've got MAIN BUS TIE BAT A/C on. Or would you rather accept the 25 volts we are seeing on MAIN A?
  • These letters are designations, not "alternating current."
  • 29 volts was the target operating voltage of the bus. Adding more power sources in series ups the voltage.
560352
CAPCOM
Okay. BUS TIE A/C on.
560410
CAPCOM
13, Houston. We need OMNI Charlie, please.
560420
LMP
You got it.
560532
CAPCOM
13, Houston. We'd like you to verify couple of readings for us. We would like the nitrogen pressure on fuel cell 1. We need the oxygen pressure on fuel cell 2.
560546
LMP
Okay. Nitrogen on 1 and oxygen on 2. Is that correct?
560550
CAPCOM
Negative. Oxygen on 3.
560555
LMP
Okay.
560623
LMP
Okay. The systems test 1-A says zip.
560644
LMP
And 2 Baker, which is 3 oxygen, says 0.6.
560650
CAPCOM
2 Baker says 0.6, and say again the other one.
560657
LMP
Fuel cell 1 nitrogen reads 0.
560701
CAPCOM
Roger, 0.
560846
CAPCOM
13, Houston. We'd like you to open-circuit FUEL CELL 1. Leave 2 and 3 as-is.
560855
LMP
Okay. I'll get to work on that.
560857
CDR
And Jack, our Oâ‚‚ QUANTITY number 2 tank is reading 0. Did you get that?
560904
CAPCOM
Oâ‚‚ QUANTITY number 2 is 0.
560907
CDR
That's AC, okay. Yeah, that's because of AC and it looks to me, looking out the hatch, that we are venting something. We are venting something out into the - into space.
  • In the film, the whole timeline is compressed - including this call nearly 14 minutes following the incident.
560922
CAPCOM
Roger. We copy your venting.
560928
CDR
It's a gas of some sort.
560948
LMP
Okay, FUEL CELL 1 you just wanted it off the line now, Jack, is that right?
560952
CAPCOM
We just wanted you to open the circuit on fuel cell 1.
560958
LMP
Okay, she's off the line.
561248
CAPCOM
13, Houston. We see you getting close to gimbal lock there. We'd like you to bring up all quad Cs on MAIN A, quad C-l, C-2, C-3, C-4 on MAIN A, and also bring B-3 and B-4 up on MAIN A.
561315
CAPCOM
13, Houston. Do you read?
561320
LMP
Yes. No, we got it.
561321
CDR
Affirm.
561322
CAPCOM
Okay. Can you tell us anything about the venting: where it's coming from, what window you see it at?
561330
LMP
It's coming out of window 1 right now, Jack, and could you give me the thrusters again?
561335
CAPCOM
Okay, the thrusters -
561336
LMP
What buses?
CAPCOM
We'd like - on MAIN A, we'd like Charlie 1, 2, 3, and 4. Also Bravo 3 and 4 on MAIN A.
561352
LMP
Okay. Got it.
561442
CAPCOM
13, we need OMNI Bravo.
561446
LMP
OMNI Bravo.
561608
CAPCOM
Okay, 13, this is Houston. We'd like you to go to your GNC checklist, the pink pages, 1-5. Do a powerdown until we get a delta of 10 amps. Over.
561621
LMP
Alright. Roger.
561703
CDR
Okay, Jack. Say again that - - for the power down - on the pink pages, the 1-5.
561711
CAPCOM
Okay. We'd like you to go down that power down procedure until you get a delta of 10 amps. Over.
561721
CDR
Roger.
561750
CAPCOM
13, Houston. Did you copy our power down request?
561757
CMP
Roger, Jack. We're - we're doing it right now.
561758
CDR
Yeah where - where did you say that was located, Jack?
561803
CAPCOM
That's in your systems checklist, page 1-5.
561827
CAPCOM
And 13, you might also check for those pages in your launch checklist. They're emergency pages - pink pages, 1-5. And we'd like you to power down until you get -
561837
CMP
Okay. That was in the launch checklist, Jack.
561842
CAPCOM
Roger. Power down until you get an amperage of 10 amps less than what you got now. Over.
561850
CDR
Okay.
562206
CMP
Okay Jack. Are you happy with the amps we have now?
562211
CAPCOM
Standby 1, Fred.
562215
CMP
Okay Jack, and on this page 1-5, we proceeded right down the list, all the way down. We're right now at BMAG number 2 is in WARM UP.
562226
CAPCOM
Roger. We copy BMAG 2 in WARM UP. We'll follow you through.
562232
CMP
Okay, and something is giving us some rates, Jack, both in pitch and roll, so I'm suspecting that maybe it's whatever it is that's venting back there. I've had to use DIRECT in order to stabilize this, and as soon as I do, we're starting to pick up rates again. Can you pick up any jets firing?
562253
CAPCOM
Standby.
562259
CAPCOM
What direction are your rates in, Jack?
562306
CMP
It's negative pitch and negative roll.
562312
CAPCOM
Roger.
562441
CAPCOM
13, Houston. We need to get some more instrumentation up. We'd like you to put INVERTER 1 on both AC BUSES. Over.
562453
LMP
Okay.
562504
LMP
Okay, you got INVERTER 1 on both AC BUSES now.
562520
LMP
And Jack, one of the items that we turned off was the - all the fuel cell pumps. Okay, and you might let us know when fuel cell 2 needs its pump back. We ought to take care of that guy.
562538
CAPCOM
Roger.
562547
CAPCOM
Okay, Fred. We want FUEL CELL 2 PUMPS to AC 1, please.
562555
CDR
FUEL CELL 2 to AC 1. Roger.
562559
LMP
Okay, it's on AC 1.
562747
CAPCOM
OMNI Charlie please, 13.
562752
CDR
OMNI Charlie.
562806
CAPCOM
Okay, 13. We've got lots and lots of people working on this. We'll give you some dope as soon as we have it, and you'll be the first one to know.
562819
CMP
Oh thank you.
562829
LMP
Okay, Jack, and the weird configuration we're sitting in now is we have the hatch installed, we still have the probe and drogue inside the command module, and we're going to stay in this situation until you kind of give us an okay to reinstall the probe and drogue.
562847
CAPCOM
Roger. We'll give you an answer.
562847
LMP
Or if necessary, to use the LM consumables.
562851
CAPCOM
Roger.
563212
CAPCOM
13, we'd like to have you put thruster Alpha 3 on MAIN A, please.
563219
CDR
Alpha 3 on MAIN A.
563224
LMP
Okay, Jack. Are you monitoring the quad temps in quad A - package temps?
563231
CAPCOM
Affirmative.
563338
CAPCOM
13, this is Houston. We'd like to power down just a little bit more, so let's get BMAG 2 OFF, and make sure your lights are down. Over.
563350
CDR
Okay. The lights are down, and BMAG 2's going from STANDBY to OFF.
563427
CAPCOM
13, Houston -
563428
CMP
Okay Jack, now I've got a rate -
CAPCOM
- we'd like you to open circuit FUEL CELL 3.
563435
CMP
Open circuit FUEL CELL 3.
563438
CAPCOM
Go ahead, Jack.
563446
CMP
Okay, FUEL CELL 3 is off the line now.
563516
CAPCOM
And 13, Houston. We'd like you to turn all your Bravo thrusters OFF, and put all your Delta thrusters on MAIN A, please.
563527
CDR
All Delta thrusters on MAIN A and all Bravo thrusters OFF. Roger.
563555
CAPCOM
13, Houston. Turn BATTERY A OFF -
563556
CDR
Okay, Jack, (unintelligible)
563601
CDR
BATTERY A OFF. Roger.
563707
CAPCOM
13, Houston. We'd like you to isolate your Oâ‚‚ surge tank. Over.
563719
CMP
Surge tank off now, Jack.
563722
CMP
Okay Jack, are you copying Oâ‚‚ TANK 1 cryo pressure?
563730
CAPCOM
That's affirmative, and we're trying to get power to that tank. Standby, we're working on it.
563738
CMP
Okay.
563905
CMP
Okay, we had a SERVICE MODULE RCS B light, Jack, due to package temperature.
  • Warning light.
563913
CAPCOM
SERVICE MODULE RCS B.
563917
CAPCOM
We copy. No problem.
563922
CMP
Let's read you the lights we got on now: CRYO PRESS, FUEL CELL 1, FUEL CELL 3, MAIN BUS B UNDERVOLT, SUIT COMPRESSOR.
563933
CAPCOM
Roger, we copy them. And we'd like to build up the pressure in Oâ‚‚ TANK 1, so turn the heaters on manually. We'll watch the pressure for you.
  • Overriding the automated circuit meant the heater wouldn't disengage automatically, which could lead to overheating and damage.
563944
CMP
Okay, do you want to see - we're going to get a MAIN BUS A UNDERVOLT, probably.
563950
CAPCOM
Roger, we realize that. We feel we can stand 5 more amps on it.
563956
CMP
Okay.
564000
CDR
Okay, heater on TANK 1's ON.
564152
CAPCOM
13, Houston. We'd like you to additionally bring on the fans in Oâ‚‚ TANK 1, and we can stand the additional amperage on that.
564203
CDR
Okay. Bring up the fans on Oâ‚‚ TANK 1.
564433
CAPCOM
13, Houston. We'd like you to check some circuit breakers on panel 226. CRYO Oâ‚‚ HEATER number 1, MAIN A. And check the three CRYO FAN MOTORS, TANK 1, three phases.
564455
LMP
Okay, Jack. 226 is configured just like it should be. I got three REAC breakers and three RAD breakers open. All the rest are closed.
  • The valves that closed the fuel cell reactant valves were electrically actuated. To prevent accidental closing, the circuit breakers to those valves were normally pulled.
  • Fuel cell radiator
564511
CAPCOM
Okay, Fred, Thank you.
564556
CMP
Jack, looking outside, the number of particles has diminished greatly, almost ceased now, which indicates maybe what was venting has almost stopped.
564609
CAPCOM
Roger, Jack, thank you. We copy.
564614
CMP
I'm still getting some rates in negative pitch, though.
564618
CAPCOM
Roger.
564628
CAPCOM
And 13, we'd like to verify that both BMAGs are OFF, please.
564635
CMP
Negative. We just have one BMAG. BMAG number 1 is still ON.
564643
CAPCOM
Okay, Jack. Let's take BMAG 1 OFF.
564650
CMP
Okay. BMAG number 1 OFF now.
564807
CAPCOM
13, this is Houston. We'd like you to give us a survey of your displays on MDCs 1 and 2. Give us gauge readings and talkbacks. Over.
564823
CDR
Okay. We'll start with display number 1.
564830
CMP
Okay, Jack. On MDC 1, there's nothing abnormal. All the rate indicators are zero. Ball number 2 is frozen, of course: we lost MAIN B.
  • You can follow along these readouts on the MDC diagram located here.
564843
CMP
I've got - ball number 1 appears to be working normally. Right now I'm sitting at roll 0, pitch 180, and yaw about 13°.
564858
CMP
I'm going to try and hold 0, 180, and 0.
564908
CDR
Okay, Houston. The center panel - I'm looking at the RCS indicator A. We have a package temperature of 180. Our helium pressure is 3900. I'm looking at fuel pressure of about 180 and percentage of about, I'd say 85%.
564932
CDR
B is about the same, except that that package pressure is 190. On Quad C, we're looking about the same, except that the package temperature is 100. On Quad D, we're looking at package temperature of 160. All other indications are about the same.
564954
CDR
CM pressure - RCS pressure is looking nominal. Helium pressure's up around 4000. And package temperature is about - a little less than 80 on ring 1 and about the same on ring 2.
565013
CDR
And the - talkbacks on the SM RCS, I've got HELIUM 1 now are all grey. HELIUM 2 are all grey. PRIMARY PROPELLANT all grey. SECONDARY PROPELLANT, I've got two barber poles - A is barber pole, B grey, C barber pole, and D grey.
565039
CDR
Okay. On the ECS RADIATORS, ?? is grey. On the - on the ECS, PRIMARY INDICATOR.
565057
LMP
Okay, Jack. Starting at the top. Okay. The CRYO TANKS: Hâ‚‚ 1 is reading 230 and the same for 2. Our Oâ‚‚ CRYO TANK 1 is - looks like it's barely holding its own at 300. And, CRYO TANK 2 is reading zip. Our quantities: Hâ‚‚ 1 is reading 73, 2, 74.
565134
LMP
On the O₂ side, we're reading O₂ 1 at quantity 76. O₂ 2 pegged to full scale high. RAD TEMPs PRIMARY INLET we're reading about 55; RAD OUT is reading about 30, and the SECONDARY OUTLET is reading - reading 52°.
565211
LMP
And the EVAP OUT TEMP is 45, STEAM PRESSURE 0.17, and GLYCOL DISCHARGE 48. SUIT COMPRESSOR is reading zip. The ACCUM is reading 30; Hâ‚‚O WASTE is reading about 34; POTABLE's reading about 98; SECONDARY RAD INLET is reading about 71; and the RAD OUT is about 30; GLYCOL EVAP TEMP is reading 65, STEAM PRESSURE pegged full scale high; DISCHARGE PRESSURE 9 psi.
565306
CAPCOM
Excuse me, Fred. I'd like to butt in here a minute. We'd like to have THRUSTER C-1 OFF.
565316
CDR
C-1 is OFF.
565318
CAPCOM
And proceed -
565319
LMP
Okay.
CAPCOM
- my last copy is SECONDARY RAD IN.
565327
LMP
Okay. Your SECONDARY RAD IN, I gave to you 70 - about 72°; the RAD OUT is about 30; the GLYCOL EVAP TEMP is reading about 65; STEAM PRESSURE full scale high, GLYCOL DISCHARGE PRESSURE about 9 psi. The ACCUM - SECONDARY ACCUMULATOR is about 30 - 34%.
565400
LMP
Our temperatures: SUITS showing about 52°; CABIN about 58°; pressures, SUIT reading 4.1, CABIN at 5. PARTIAL PRESSURE CO₂ is up to a little over 1, about 1.1.
565420
LMP
On the SPS side of the house, the temperature is 72°, helium's reading 3500; N₂ A is reading 2300; N₂ B about 2450. And our ullage pressures: FUEL is reading about 165; OXIDIZER 170.
565451
LMP
Fuel cells: FUEL CELL 1, both CLOSED, they're zip; SKIN TEMP 405°; CONDENSER EXHAUST is lower scale. FUEL CELL 2 - right now we've got an O₂ - an H₂ FLOW reading of 0.13 to 0.14, and the O₂ FLOW is right now pegged full scale high although it has been varying depending on thruster activity which has also given us MAIN BUS A undervolts from a steady reading of about 1.1 up to full scale high.
  • As thrusters used power when they fired and each load drops the voltage, the thrusters could trigger undervolt warnings when they engaged.
565533
LMP
The T-SKIN is about 445 and the CONDENSOR EXHAUST 17, correction, 180. Let's see if you want it on the DC indicator: FUEL CELL 1 is 0 amps; 2 is reading somewhere between 44 and about - oscillating 44 to 48, again depending on thruster activity.
565602
CAPCOM
Standby.
565603
LMP
- is 0 amps. Say again, Jack?
565623
CDR
Houston, 13.
565655
LMP
Hello, Houston; Apollo 13. How do you read?
565707
CAPCOM
Okay, 13. This is Houston. It appears to us that we're losing Oâ‚‚ flow through FUEL CELL 3. So, we want you to close the REAC valve on FUEL CELL 3. It looks like FUEL CELL 1 and 2 are trying to hold up okay. You copy?
565726
LMP
Are you saying FUEL CELL 1 and 2 - 1 and 2 are trying to hold up but we're leaking Oâ‚‚ out of FUEL CELL 3? And you want me to shut the REAC valve on FUEL CELL 3? Did I hear you right?
565740
CAPCOM
That's affirmative. Close the REAC valve on FUEL CELL 3.
565747
LMP
Okay. I'll go to the SSR page. Do you want me to go through that whole smash for fuel cell shutdown? Is that correct?
565758
CAPCOM
Standby.
565824
CAPCOM
Okay, 13. We want you to turn the inline heaters OFF on FUEL CELL 1. Then we want you to go through the fuel cell shutdown procedure on FUEL CELL 3. Read back.
565840
CMP
Okay. Shut down the inline heater on FUEL CELL 1. We're proceeding with the shutdown, special subroutine, for FUEL CELL 3.
565850
CAPCOM
That's affirmative.
565912
CAPCOM
13. OMNI Bravo, please.
565955
CAPCOM
13, Houston. Over.
565958
CMP
Go ahead.
570000
CAPCOM
Okay. You got OMNI Bravo and we'd like to have you verify that the tape recorder is OFF please.
570007
CMP
That's verified.
570010
CMP
Okay, Jack. I'm sitting here with an 06 18 showing and I can't get rid of it. Oh, standby just a -
570048
CDR
Okay. FUEL CELL 3 REACs are OFF, Houston.
570052
CAPCOM
Roger, Jim. Thank you.
570154
CMP
Okay, Jack. Step 2, special subroutine 1 for the fuel cell procedure has been completed.
570201
CAPCOM
Roger, thank you.
570430
CMP
Okay, Jack. I'd like to bring on jet A-4. I've got null on negative pitch control, and - negative pitch control, and right now neither DIRECT or AUTO coils.
570447
CAPCOM
Okay. You say no pitch in either DIRECT or AUTO? You want to bring on A-4?
570453
CMP
Yeah, I've got a positive pitch rate and I can't stop it.
570458
CAPCOM
Okay.
570508
CAPCOM
Okay, Jack. Bring A-4 on. Stop the pitch rate.
570514
CMP
Okay. That got it.
570536
CAPCOM
And 13, we need OMNI Charlie, please.
570541
LMP
OMNI Charlie.
570546
CAPCOM
And Freddo, we would like to have you verify fuel cell reactants talkback is barber pole.
570554
LMP
That's affirm. I watched it and it went barber pole as I threw the switch.
570600
CAPCOM
Roger.
570801
CMP
Okay. Jack. Let me give you a thruster configuration right now. Able 1, Charlie 1, Able 2 are OFF. Charlie 2, MAIN A, all the thrusters that I call that are ON are on MAIN A. Baker 1 OFF. Dog 1 ON, Baker 2 OFF, Dog 2 ON. Able 3, Charlie 3, Able 4, Charlie 4 on. Baker 3 OFF, Dog 3 ON, Baker 4 OFF, Dog 4 ON.
  • The seemingly disjointed order of callouts here is actually the order the switches appeared on panel 8.
570928
CAPCOM
Okay, Jack. That thruster configuration looks okay.
570935
CMP
Alright. Okay. Do you want some readings from the systems test meter regarding fuel cells?
570945
CAPCOM
Standby 1 on that, Jack. Let me ask the EECOM.
570947
CMP
We've got some incompatibilities here.
571003
CAPCOM
Okay, 13. We'd like to have you give us those systems test readings on FUEL CELL 1 and 3, please.
571011
CDR
Okay. 1 and 3 coming up.
571014
LMP
Okay Jack, 1-A is reading - lower scale. 0. 1-B is reading 3.45. Okay. You only want FUEL CELLs 1 and 3, okay - ignore that 1-B reading. 1-C is reading 3.4. Now, 1-D is reading 2.4. 2-B is reading 0.25.
571110
CAPCOM
Roger, is that 2 Bravo, Fred?
571115
LMP
That's 2 Bravo is reading - oh, about 0.25 to 0.3.
571139
LMP
Okay. 2-C is reading 4.1.
571210
LMP
And 3-A is reading 4.0.
571215
CAPCOM
Roger, 4.0. Say again what it is, please.
571222
LMP
3 Able. 3-A.
571248
LMP
And 3-B is reading 1.8.
571258
LMP
And 3-D is reading 1.95.
571408
LMP
And Houston, 13. Oâ‚‚ tank pressure number 1 is less than 300 now.
571414
CAPCOM
Roger. We're seeing that. We confirm it.
571505
CAPCOM
13, Houston. We're going to have to have you go through the shutdown procedure on fuel cell 1. Our Oâ‚‚ pressure is going down as you note and the temperature confirms it. Did you copy?
571524
CMP
Okay. Well, what bus configuration - what MAIN BUS do you want powered?
571537
CAPCOM
Okay, Jack. We want you to leave the bus configuration as it is. FUEL CELL 2 on MAIN A.
571545
CAPCOM
And we need OMNI Bravo.
571552
CMP
Okay, Jack. We're proceeding with the shutdown procedure for FUEL CELL 1.
571635
CAPCOM
And 13, Houston. We'd like you to isolate the REPRESS package, please.
571642
CMP
Okay.
571642
CDR
Isolate the REPRESS package. Roger.
571645
LMP
I can confirm REPRESS package is OFF.
571648
CAPCOM
Roger. So now you've got the REPRESS package and the surge tank isolated. Is that affirm?
571655
LMP
That is Charlie.
571658
CMP
Okay. Now, this is - we're ready to close the REACs on FUEL CELL 1. Is that right?
571735
CMP
Jack -
571735
CAPCOM
Standby on the fuel -
CMP
- one last - confirmation. Okay.
571741
CAPCOM
Roger. We're - we're giving you one last -
571742
CMP
We want to just get one last confirmation.
571745
CAPCOM
Okay, Jack. We're getting that last confirmation. Standby, please.
571751
CMP
Okay.
571801
CAPCOM
Okay, 13. We verify that we want you to close down - shut down FUEL CELL 1, close REACs valve.
571810
CDR
Roger -
571810
CMP
Okay.
CDR
- FUEL CELL 1; close the REACs valve.
571820
CMP
Fuel -
571820
CDR
REACs valve on FUEL CELL 1 is closed.
571845
CMP
Okay, Jack. I can confirm step 2. The FUEL CELL shutdown procedure is complete for FUEL CELL 1.
571856
CAPCOM
Roger.
571958
CAPCOM
13, we recommend that you enable B/D ROLL in the DAP. Over.
572005
CMP
Okay. Will do -
572006
CDR
B/D ROLL in the DAP.
572024
CAPCOM
13, Houston. We're working on the big dish now, so turn the HIGH GAIN POWER switch off, please.
572031
LMP
Okay.
572055
CMP
Okay, Jack. When we got the loud bang, we got also a restart. Did you copy that? Is - does GUIDO want anything, a VERB 74 or anything done with the CMC?
572106
CAPCOM
Standby.
572155
CAPCOM
13, Houston. We're ready with a VERB 74 now, please.
572205
CMP
Coming down at you.
572355
CMP
Okay, Jack. It looks like Oâ‚‚ tank 1 pressure is just a hair over 200.
572402
CAPCOM
We confirm that here and the temperature also confirms it.
572409
CMP
Okay. Does it look like it's still going down?
572413
CAPCOM
It's slowly going to zero, and we're starting to think about the LM lifeboat.
572421
CMP
Yeah, that's what we're thinking about too. You want me to do a quick P52? It kind of looks like - we've been talking it over, and it kind of looks like we'd probably align our plats - LM platform with our platform and then power down the CM, and keep the LM powered up doing a DPS - whatever DPS burns you give us?
  • Remarkably accurate.
572454
CAPCOM
13, we're not going to concern ourselves at the moment with a DPS burn; it's going to be some time before we'd get to that. But we're working on other procedures to give you, which will allow us to use the LM systems. Over.
572513
CMP
Okay. Real fine.
572641
CAPCOM
Apollo 13, Houston. We'd like to charge BATTERY A now.
572647
CDR
Charge BATTERY A. Roger.
572713
CAPCOM
And Jack, in regard to your question about the P52 and LM platform, it's - there's no need to worry about that now. We wouldn't be using the LM platform for - until about 79 hours, so let's go as-is on the platform for now. Over.
572730
CDR
Okay. We understand.
572737
CMP
Okay, Jack.
573014
CMP
And Jack, we've turned off the waste dump heater. If you're going to consider dumping any more waste water, we probably ought to do it while the duct is warm there.
573031
CAPCOM
Roger. Standby, Jack.
573035
CMP
Okay.
573039
CAPCOM
Okay Jack, let's keep the water; no need for a dump right now.
573044
CMP
Alright.
573216
CAPCOM
13, Houston. We see the PROP ISOL valve on RCS Quad Charlie closed, so we'd like to also disable AUTO RCS feature in Quad Charlie.
573230
CDR
You want us to isolate the AUTO RCS features in Quad Charlie?
573234
CAPCOM
Affirmative.
573244
CDR
Okay Jack, I didn't plan to reset that Quad Charlie PROP ISOL valve. Do you want me to do that?
573254
CDR
Okay, we just tried it and Quad Alpha and Charlie barber poles are showing.
573302
CAPCOM
Standby, Jim.
573303
CMP
Okay, Jack. That's the secondary propellant are barber poles on Alpha and Charlie.
573447
CAPCOM
13, Houston. It won't do any good to try to power the propellant valves on A and C, so we want you to disable the AUTO on RCS Charlie. And we have a procedure for getting power from the LM we'd like you to copy down.
573509
CMP
Okay.
573509
CDR
Standby, Jack.
573511
CMP
That sounds like good news.
573606
LMP
Okay, Jack, about how long is it?
573613
CAPCOM
It's not a very long procedure, Fred. We figure we've got about 15 minutes' worth of power left in the Command Module, so we want you to start getting over in the LM and getting some power on that. And you ready to copy your procedure?
573627
LMP
Okay.
573629
CAPCOM
Okay, in the CSM -
573630
LMP
Standby.
573640
LMP
Go ahead.
573642
CAPCOM
Okay. In the CSM on panel 5, circuit breakers LM POWER 1 and 2, OPEN. Then LM POWER switch, reset and release. In the LM, on panel 11 and panel 16, XLUNAR BUS TIE, both circuit breakers CLOSE. On panel 16, circuit breaker ASCENT ECA CONTROL, CLOSE. On 16, DESCENT ECA CONTROL, CLOSE. On panel 14, put your BAT 5 NORMAL feed ON. BATs 1, 2, 3, and 4 LOW VOLTAGE taps, ON. BAT 5 NORMAL feed, OFF. ASCENT ECA CONTROL, OPEN. You copy?
573808
LMP
Standby 1.
573825
LMP
Okay. In the CSM, on panel 5, we want CB LM POWER 1 and 2, OPEN. Then the LM POWER switch to reset, release. In the LM, panels 11 and 16, XLUNAR BUS TIE breakers closed. The DECSENT ECA CONTROL closed. On panel 14, BAT 5 NORMAL feed ON, followed by BATS 1, 2, 3, and 4 LOW VOLTAGE taps ON. Then BAT 5 NORMAL feed OFF. Then ASCENT ECA CONTROL breaker OPEN.
573859
CAPCOM
That's a good readback, Fred.
573915
CAPCOM
And 13, Houston. As a final effort here, we'd like you to turn on the fans in tank 2. Over.
573923
CDR
Roger, understand. Turn on the fans in tank 2.
573935
CDR
You want the Oâ‚‚ fans in tank 2, Jack?
573938
CAPCOM
That's affirmative, Jim.
573945
CDR
Oâ‚‚ tanks - fans in tank 2 are on.
573948
CAPCOM
Roger.
574132
CAPCOM
13, Houston. We'd like you to start making your way over to the LM now.
574138
CMP
Fred and Jim are in the LM.
574143
CAPCOM
Okay, Jack. Thank you.
574250
CMP
Okay, you still with us, Houston?
574303
CMP
Okay, Houston. You read, 13?
574306
CAPCOM
Reading you loud and clear, Jack. I've got a procedure for -
574310
CMP
Okay.
CAPCOM
- the guys in the LM.
574315
CMP
You've got another one? Go ahead.
574318
CAPCOM
I have an activation procedure. I'd like you to copy it down.
574325
CMP
How long is it, Jack?
574327
CAPCOM
It's just four lines. Go to Activation 1, do step 3. Go to Activation 11, omit step 1. Do Activation 12, and then go to Activation 13 and do step 1. Do you copy?
574354
CDR
Okay. Is that Activation 1? Do step 3. Is that correct?
574359
CAPCOM
Thats affirmative, Jim.
574403
CDR
Activation 11, omit step 1, do the rest. Is that correct?
574406
CAPCOM
That's affirmative.
574410
CDR
Do Activation 12 and Activation 13, step 1.
574415
CAPCOM
That's all correct.
574425
CMP
Okay, Jack, pressure in tank 1 is approaching 100psi. What's going to be the symptoms of this fuel cell starting to drop off?
574452
CAPCOM
Standby, Jack, we'll get the word on that.
574456
CMP
Okay.
574506
CAPCOM
And Jim, when you get to the end of that procedure, we'd also like to have you put the DEMAND REGs to CABIN.
574515
CDR
DEMAND REGs to CABIN. Roger.
574531
CDR
Jack, was that Activation 1 step 3 only, or all of Activation 1?
574539
CAPCOM
That's - go all the way down to step 3, Jim.
574544
CDR
Activation 1 to step 3. Roger.
574648
CDR
Houston, Apollo 13. Never mind.
574654
CAPCOM
13, say again, please.
574659
CDR
Oh, we were curious about Activation 11 on the VHF.
574705
CAPCOM
Omit the VHF.
574817
CAPCOM
Jack, this is Houston. We want you to keep the IMU up and keep the lights on so you can see in there, and leave battery off - BATTERY A off. And at the appropriate time, we'll put it on MAIN A. And we're going to keep the IMU up so as we can get a coarse align in the LM.
574838
CMP
Alright. Real good. Right now, we're charging BATTERY A. Do you want to discontinue that?
574846
CAPCOM
Discontinue the charge on BATTERY A, Jack.
574922
CMP
Okay, Jack. I discontinued charge on BATTERY A. You give me the call and I'll turn BUS TIE AC on.
574932
CAPCOM
Roger. And we want you to keep the lights up and the IMU on.
574938
CMP
Okay.
574948
CAPCOM
And Jack, we'd like you to leave the COMM configuration as-is until we get COMM with the LM.
574957
CMP
Okay.
575108
CAPCOM
And 13, this is Houston. I've got another procedure for the LM. A short one.
575115
CDR
Okay, ready to copy, Jack.
575117
CAPCOM
Okay, on panel 11 we'd like you to close the LGC/DSKY circuit breaker. Then we want you to go to Activation 25, do steps 1, 2, and 3. Then go to Activation 30, and that will give us a docked IMU coarse align. Over.
575141
CDR
Roger. Panel 11, close LGC circuit breaker. Activation 25, do steps 1, 2, 3, and then do complete Activation 30. Is that correct?
575150
CAPCOM
That's affirmative. On panel 11, LGC/DSKY circuit breaker closed.
  • A somewhat unnecessary clarification, as the only thing labeled "LGC" on panel 11 is the LGC/DSKY breaker.
575316
CAPCOM
And in the LM, let's go to panel 11 and close the SUIT FAN circuit breaker and get SUIT FAN 1 cranked up.
575326
CDR
Okay. Panel 11, close SUIT FAN circuit breaker, and we'll get the suit fan cranked up.
575331
CAPCOM
That's affirm.
575348
CAPCOM
And Jack, in the CSM, go to BYPASS on the radiators and turn your GLYCOL PUMP off.
575356
CMP
Okay.
575401
CMP
Pull the BYPASS; GLYCOL PUMP going off.
575405
CAPCOM
Roger.
575543
CAPCOM
And 13, in the CSM we want to verify that all the FUEL CELL PUMPs are off, and we want to have you turn off the Oâ‚‚ FANs in TANK 2.
575556
CMP
Okay. Tank 2 fans going off.
575600
CMP
Okay, that leaves me with TANK 1 FANs on, and TANK 1 HEATERs on.
575610
CMP
FUEL CELL 2 PUMP going off now.
575620
CAPCOM
And Jack, leave them both on in TANK 1.
575627
CMP
Okay.
575756
CAPCOM
13, Houston. We've got AOS on the LM here.
575802
CMP
Okay.
575923
CAPCOM
And 13, this is Houston. In the LM we'd like to have you go to Activation 12 step 3, which is get the batteries on high taps. Over.
575935
LMP
Okay.
575941
CDR
How you going there? Activation 12, step 3.
  • For a while here, Aquarius has their audio mode set to VOX, so you'll hear a lot of their chatter back and forth that they don't realize is being transmitted.
580018
LMP
Okay. And Jack, how do you read from Aquarius?
580023
CAPCOM
Aquarius, Houston. Say again, please.
580028
LMP
Okay, I was just making a COMM check here. I'm on high voltage taps.
580032
CAPCOM
Roger. We see them, Fred, and I'm reading you loud and clear.
580038
LMP
Okay. Didn't think I'd be back this soon.
580051
LMP
Okay. What next, James?
580055
LMP
Coarse align?
580057
LMP
Do it right. Take your time.
580132
CAPCOM
And Aquarius, Houston. We'd like you to - on your alignment, can you continue right on through the fine align Activation 31? Go right on through step 7. Over.
580145
LMP
Okay, you want to go on 31 through step number 7, Jack.
580150
CAPCOM
That's affirmative. And Odyssey, we've got another configuration for you. All 16 RCS AUTO SELECT OFF. All RCS heaters off. Over.
  • This is likely a continuation of the EECOM power-down list handed earlier to CAPCOM.
580206
CMP
Okay. I can verify all heaters off. Jack, I've got to keep a fairly minimum deadband until I get through this coarse align.
580215
CAPCOM
Roger.
580227
LMP
Okay, VERB 41, NOUN 20. Okay.
580242
LMP
You want plus? Plus or minus? +302.43? Is that right?
580312
LMP
Okay, let me enter it. Okay, what's the next one? +347.78. 347.78. Okay. 081.3. Is that right? ENTER. Okay.
580354
CAPCOM
Odyssey, Houston, BATTERY A on.
580359
CMP
BATTERY A on now.
580400
CAPCOM
Go ahead, Aquarius.
580403
CDR
Houston - okay, I want you to double check my arithmetic to make sure we got a good coarse align. The roll CAL angle was -2°. The Command Module angles were 355.57, 167.78, 351.87.
  • This the docking angle index from the very beginning of this audio.
580436
CAPCOM
Okay, Jim. We copy the roll CAL at -2.0. Command Module is 355.57, 167.78, 351.87.
580523
LMP
VERB 41, we've done that. Okay.
580528
CAPCOM
Aquarius, Houston. Request HIGH BIT RATE, please.
580536
LMP
You want HIGH BIT RATE?
580538
CAPCOM
That's affirmative, Fred. Won't cost us anything.
580622
CAPCOM
Odyssey, Houston. We'd like you to, on your COMM configuration, go to PRIMARY POWER AMPL OFF, LOW BIT RATE, and DOWN VOICE BACKUP. Over.
580642
CAPCOM
And Aquarius, we need your SUIT GAS DIVERTER to CABIN.
580656
CMP
Alright. You got it.
580702
CMP
Houston, I've gone to PRIMARY POWER AMPLIFIER OFF, LOW BIT RATE, DOWN VOICE BACKUP.
580711
CAPCOM
Okay, Jack, thank you. And Aquarius, your arithmetic looks good on the coarse align there.
580720
CDR
Okay. Okay, standby for an ENTER.
580726
CDR
Three -
580740
CMP
Get the GET; we need the GET. What is it? What's that? 58? 58:07?
580814
CMP
58 what?
580917
CDR
Houston, Aquarius.
580919
CAPCOM
Go ahead, Aquarius.
580923
CDR
Here are the gimbal angles. Command Module, 356.69, 163.42, 346.67. Aquarius is 302.26, 345.92, 011.79. Over.
580947
CAPCOM
Okay, Jim. I got Command Module 356.65, 163.42, 346.67. Aquarius, 302.26, 345.92, 011.78.
581007
CDR
That's 011.79.
581012
CAPCOM
Say again, please.
581018
CDR
The LM middle gimbal is 011.79.
581022
CAPCOM
011.79. Got it.
581219
CAPCOM
Odyssey, Houston. We need a COMMAND RESET on your - on your COMM, and then we'd like you to power down the CMC, power down the IMU, heaters off on the IMU, but leave your BATTERY A on.
581243
CMP
Yeah.
581258
CAPCOM
Odyssey, Houston.
581308
LMP
Ask him if he's ready -
581313
CDR
Houston, this is Odyssey. Go ahead.
581317
CAPCOM
Okay, Jim.
581318
CDR
Copy it down.
581320
CAPCOM
Okay, Jim. I think I'm reading Jack, now. But what we want him to do is give us a COMMAND RESET. And then power down the CMC, power down the IMU, turn the IMU heater off, leave BATTERY A on. Over.
581419
CMP
That's just about 80 - in fact, 82 hours out of the two primary cartridges. That's two guys. 44 is what LC8 got. That would be 88 hours. We got a secondary, you're right. We're listening.
581441
CAPCOM
Odyssey, Houston.
581443
CMP
They can turn it -
581446
CMP
Go ahead?
581447
CAPCOM
Yeah, Jack, did you copy down about the CMC and IMU?
581452
CMP
Yeah, Jack; I read it back twice to you. COMMAND RESET, which I've done. I'm about to power down the IMU, power down the CMC, turn the IMU heaters off, leave BAT A on.
581507
CAPCOM
That's affirm. Thank you.
581511
CMP
Okay, I just got a MASTER ALARM and MAIN BUS A UNDERVOLT. And I'm starting to power down, now. We've lost the -
581521
LMP
The only advantage to doing it early - if we can power back - the LM back down. The only advantage to doing it early is you can do a big burn now and a midcourse and then power the LM down. Otherwise, we've got to keep the LM powered up clear until we get around the Moon.
581545
LMP
Plus, it would be inside on the burn.
581557
LMP
I just hope the G&N hangs up on - hangs in on this one - I'd sure hate to do that one manual.
  • Little does he know.
581605
LMP
Oh boy.
581606
CAPCOM
Odyssey, Houston. Couple circuit breakers for you. On panel 276, on your INSTRUMENTATION POWER CONTROL, open CB number 3 and number 4.
581633
CMP
Okay, Houston. Panel 276, INSTRUMENTATION POWER CONTROL circuit breakers -
581637
LMP
- you got a lot of light -
CMP
CB 3 and CB 4 are open.
581646
CMP
What?
581647
CAPCOM
That's affirmative, Odyssey. And also get your SCS electronics package and power off, and your FDAI POWER/GPI off, and your AUTO jet SELECT, all 16 off.
581707
CMP
Okay, well wait a second. Let me - let me get the CMC powered down.
581713
CAPCOM
Roger, Jack.
581723
CDR
Jack, while he's doing that, copy down what you just said again. I want to write it down.
581736
CAPCOM
Aquarius, we need to get your sublimator powered up. Activation page 20 and Activation page 21 step 3. Over.
581753
CDR
Roger. Activation 20 and Activation page 21, step 3, sublimator.
581759
CAPCOM
Roger.
581800
LMP
That's Activation, page 20?
581809
CMP
Okay, Jack. Now I have powered down my IMU. I have no control at all. I'm going to turn my 16 jets off. Say again the other things you wanted?
581828
CAPCOM
Okay, Jack. We'd like you to turn off your Oâ‚‚ TANK 2 heaters and fans. Correction - TANK 1. Turn the fans and heaters off.
581840
CDR
Okay. And Jack, can we turn on the FDAI circuit breakers so we could have a ball to see if we go to gimbal lock or not?
  • Another oversight in the rushed procedure - they are flying blind.
581850
CAPCOM
Standby.
581853
CDR
Houston, he's going to give a 16 NOUN 20, Jack. And okay, I've got Oâ‚‚ heaters and fans off in TANK 1.
581915
CDR
And Jack, let me know if we get close to gimbal lock, would you?
581925
CAPCOM
Jim, we didn't want you to power down the ball in the LM. We wanted you to power down the ball in the CSM.
581940
CMP
Jack, they haven't powered down -
581942
CDR
Jack, we don't have the balls powered up in the LM.
581945
CMP
I have the CMC and IMU in the command module powered down. The heaters are out.
581956
LMP
And the EVAP flow valve, that's open now. And I've undone my suit hoses here and opened up the suit flow valves. So we've got air flowing in the LM now.
582011
CMP
Okay, Jack. Will you say again the SCS items you wanted me to power down?
582045
CMP
Okay, Houston. Do you read Odyssey?
582055
CDR
Hello, Houston. How do you read?
582102
LMP
His gimbal lock and ours are different, Jim.
582109
CAPCOM
Apollo 13, Houston. Say again, please. You were cut out.
582115
CMP
Okay, Jack. Do you want me to proceed by the SCS powerdown checklist? I did not copy the SCS items you wanted me to power down.
582132
CAPCOM
Okay, Odyssey. We want you to go SCS ELECTRONICS POWER OFF.
582139
CMP
Okay. It's done.
582140
CAPCOM
FDAI POWER/GPI OFF. AUTO jet SELECT, 16 -
582147
CMP
That's done.
CAPCOM
OFF. And all your ROTATIONAL CONTROL POWER, OFF.
582151
CMP
It's done. ROTATION CONTROL POWER, DIRECT, and AUTO closed OFF.
582159
CDR
Okay, Jack. Tell me there - we need to know when we're getting close to gimbal lock in the LM. We have no balls right now.
582206
CAPCOM
Okay. We want you to power up your eight-ball. We want you to get your RCS heaters on. Pressurize the RCS and open up the MAIN SOVs. Over.
582223
LMP
Okay Jack, I've got two commander FDAI breakers in, AC and DC, and the two GASTA breakers in AC and DC. And next you'll want the RCS heaters all on with the - pressurize the RCS and then the MAIN SOVs open. And I think they're already open.
582240
CAPCOM
Roger.
582250
CAPCOM
And Freddo, get the TCA breakers in last, please.
582300
LMP
Alright, Jim. I'm holding off on those until you give me further word anyway. I'm just going to pressurize right now.
582308
CDR
Jack, are you reading LM gimbal angles?
582416
CAPCOM
Okay, Aquarius. I have some gyro torquing angles and the Odyssey is powered down, attitude-control-wise, so LM's got attitude control now.
582513
CAPCOM
Aquarius, Houston.
582522
LMP
Go ahead, Jack.
582524
CAPCOM
Okay. We want you to know that we've got some gyro torquing angles for you. And we want you to tell us when you've got attitude control in the LM.
582538
LMP
Okay. We're still working on the pressurization. I'm getting Jim on the horn here so he can help out there.
582543
CAPCOM
Roger.
582610
CMP
Wonder why.
582614
LMP
We got to get this pressurized.
582655
CDR
Houston, Aquarius.
582658
CAPCOM
Standby 1, Aquarius. Odyssey, we'd like you to go DIRECT RCS and hold your present attitude out the window until the LM gets RCS powered up. Go ahead, Jim.
582712
CDR
Well, that's my question. We're not - our 16 20 doesn't match our eight-ball here. We went FDAIs ON, but we don't have our balls completely powered up. There may be a bellyband to get our - the angles don't look the same and we don't want to go into gimbal lock.
  • VERB 16 NOUN 20
  • Essentially, Lovell is explaining that with the present configuration they don't have a lot of confidence in even being able to monitor where gimbal lock would be.
582730
CAPCOM
Roger. How far are you from RCS power up - RCS pressurization?
582744
LMP
Okay, Jack. I'm right up to where it's MASTER ARM ON; RCS FIRE; both LOGIC POWERs out, that isn't closing the normal circuit breakers. You didn't have me do that. Do you want A in and then I'll fire them?
582800
CAPCOM
Okay 13, you're both talking at once. One at a time, please.
582810
CMP
Okay, who's first?
582812
CAPCOM
Close LOGIC POWER A and B, Fred, and pressurize RCS.
582817
LMP
Okay.
582824
CAPCOM
Go ahead, Odyssey.
582829
CMP
Okay, I'm going to try to do the best I can. I've got one attitude reference: I'm going to fly according to the lunar terminator.
  • He can fly by sight using the shadow on the Moon as a reference.
582837
CAPCOM
Roger, Jack. Just maintain attitude.
582905
CMP
What am I doing? I can't do that anyway. Let's see - crossfeed. Nose up. Down. And - -
582925
CAPCOM
Aquarius, Houston. We'll have to get some AC up so you can get a ball reading. Close your BUS TIE INVERTER circuit breakers, all four of them on panel 11. Close your AC BUS VOLT circuit breaker on panel 11. On panel 16, INVERTER 2, CLOSE. Select INVERTER 2. Over.
582950
CDR
That's been completed, Jack.
582959
LMP
Okay, the RCS is pressurized now.
583040
LMP
Okay, Jack. Do you want us to proceed right on down the line with the RCS checkout and Activation 37 now?
583051
CAPCOM
Standby, Fred.
583103
LMP
Hell, is he still firing up there?
583116
CAPCOM
Okay, Fred. Negative on the Activation on page 37. We want your RCS pressurized and then get your TCA breakers in and go to PGNS ATTITUDE HOLD.
583154
CDR
Okay, Jack, how do you read?
583157
CAPCOM
Okay, this is Houston. We want you to load the DAP with 30120.
583207
CDR
Load the DAP with 30120.
583212
CDR
Complete.
583217
LMP
Okay, we need to change that CSM weight.
583225
CAPCOM
Okay, Aquarius. Your CSM weight is 63400.
583252
CDR
And Jack's alive to take control of the LM to stay away from gimbal lock. Over.
583259
CAPCOM
Affirmative. Take control of the LM. PGNS ATTITUDE HOLD.
583307
LMP
We are.
583308
CAPCOM
And Odyssey, request you coordinate with Aquarius on attitude control.
583316
CMP
Okay.
583317
CDR
Roger.
583319
CDR
Okay, let's see if we can fire these things, or if we have - ATT HOLD?
583327
CDR
Are you firing anything?
583328
CMP
I don't think so.
583355
CDR
Okay, I've got DIRECT.
583405
CAPCOM
And Aquarius, check your ATCA (PGNS) breaker on panel 11 IN.
583413
CDR
Say again?
583415
CAPCOM
Close, on panel 11, circuit breaker ATCA (PGNS).
583421
CDR
ATCA (PGNS). Come on, let's take it easy now.
583430
CDR
Okay, we've got ATCA (PGNS) closed.
583454
CDR
Okay, shut it down!
583458
LMP
Okay, Jack. We got it.
583522
CAPCOM
Okay, Jim. How's the attitude control?
583528
CDR
Okay, Jack. We've got attitude control now in the LM. We're going to try to rotate up through the bellyband.
583534
CAPCOM
Roger.
583559
CAPCOM
Odyssey, Houston. I've got a procedure for you.
583605
CMP
Okay, Jack, I'm -
583609
CDR
Well, I want to go up this way to get away from that -
583615
CDR
The radio's all powered up.
583633
CDR
Check your antenna?
583637
CMP
Okay, Jack. Odyssey is ready to copy.
583641
CAPCOM
Okay, Jack. What we want you to do is close the reactants valve on FUEL CELL 2. Power down your inverters. Power down your battery relay bus. Battery ties off. And pull your entry circuit breakers - entry battery circuit breakers A, B, and C.
583716
CDR
Check the control, and make sure we don't go to gimbal lock, Fred.
583721
CMP
Okay, Jack. Understand. Close REAC valve circuit breakers in FUEL CELL 2. Power down inverters. Power down BAT relay bus. BAT TIES OFF. Power entry and both running circuit breakers A, B, and C. All off.
583741
CAPCOM
That's affirmative, Jack, and - close the reactant valve on FUEL CELL 2, there.
583751
CDR
Okay. I can do that, and Jack will do the rest.
583802
CAPCOM
Okay, Jack. On FUEL CELL 2, open-circuit it.
583818
CDR
Okay, FUEL CELL 2 is open-circuited. Do you want me to go through the standard shutdown procedure for the REAC valves and -
583837
CAPCOM
Odyssey, Houston. All you have to do is close the REACs valve on FUEL CELL 2.
583846
CMP
Okay. CB REACs and vent REAC valves all closed.
584006
CDR
Houston, Aquarius.
584009
CAPCOM
Go ahead, Aquarius.
584013
CDR
Okay, Odyssey is completely powered down now according to the procedure that you read to Jack.
584022
CAPCOM
Roger, we copy. That's where we want to be, Jim.
584037
LMP
And Jack, have you all got good LM data down there now?
584048
CAPCOM
That's affirmative, Fred. We're getting good LM data.
584053
LMP
Okay. In that case, I think I'll pull out some display breakers and just let you all keep an eye on things.
584103
CAPCOM
Roger.
584104
CDR
He's turning his lights off now, too.
584106
CAPCOM
Standby 1 on that, Fred.
584118
LMP
Okay.
584242
CDR
We don't want to lose COMM with him.
584246
LMP
I'm watching it.
584353
CAPCOM
Aquarius, Houston. Standby on opening your circuit breakers for displays. We're going to let you know what they are, and I have some gyro torquing angles for you.
584409
LMP
Okay. What page is that gyro torquing?
584412
CDR
Okay, what page is the, do we write the gyro torquing angles on, Jack?
584417
CAPCOM
Standby.
584419
LMP
Okay. We're there now, Jim. Jim's got it. Go ahead with the gyro torquing angles.
584424
CAPCOM
Okay. We'd like you to proceed with the fine align and your gyro torquing angles are X +003.30, Y +024.80, Z -015.10. Over.
584448
CDR
Okay, I read the gyro torquing angles as +003.30, Y is +023 - I only have four numbers for Y, you'll have to give that one to me again - and Z is -015.10. Read Y again, please.
584506
CAPCOM
Okay, Jim. X and Z are correct, and Y is +024.80.
584520
CDR
Okay. We read Y as +024.80. We'll proceed on Activation 40 to fine align the platform.
584528
CAPCOM
Roger.
584538
CAPCOM
Okay, Aquarius, proceed as on page 40 with the IMU fine align.
584702
CDR
Okay, the way to do that -
584742
CAPCOM
Aquarius, Houston. Can you see any stars out the LM window?
584754
LMP
We'll have to wipe them off, Jack. They're coated with water right now.
584759
CDR
Can I get a towel?
584802
CAPCOM
Roger. As soon as you get a chance to - or in a position to - take a look, we'd like to know if you can see stars for alignment purposes.
584816
LMP
Okay. Jim's going to be in trouble in our present attitude out his side.
584821
CDR
The Sun's there.
584825
CDR
Wait 1.
584836
LMP
What have you got? How much you got left in battery A? Okay. I wish I knew what the hell they were thinking. Right now -
584851
CDR
They're talking about powering down and doing a P51 here?
584857
LMP
No, they were just thinking about P52 and going through the -
584901
CAPCOM
Aquarius, Houston, negative on the P51. We want to stay just like we are, but we'd like to be able to correlate what you're doing with some simulator work we're going to crank up. And so if you can give us information as to what stars you can see out the window, we can make that correlation.
584923
CDR
Would you say that one more time? Give me the top tier - the top tier.
584934
CAPCOM
Jim, what we want you to do is go with your current fine align and disregard the P51. What we're attempting to do is to crank up some LMS simulations to correlate what we can get out your window with what we can get out the LMS window to see if that will help us any. So when you can see some stars, if you can - you think you can recognize them and recognize constellations, please let us know.
585003
CDR
Okay, we'll check. Standby.
585017
CDR
Okay, watch the -
585213
CAPCOM
Aquarius, Houston. We notice that the Oâ‚‚ pressure in ASCENT TANK Oâ‚‚ is a little high, so we want to use some of it. So close DESCENT Oâ‚‚ and open ASCENT Oâ‚‚ TANK 2. Over.
585246
LMP
Okay, Jack. Switched, now I'm on ASCENT number 2 Oâ‚‚ tank. DESCENT Oâ‚‚ is closed.
585254
CAPCOM
Roger, Fred.
585401
CDR
Okay. Houston, Aquarius. How do you read?
585405
CAPCOM
Reading you five square, Jim. Go ahead.
585410
CDR
Okay. I'm looking out of Fred's window. I see a lot of particles out there, but a lot of that stuff is still drifting away from us; so a lot of it is flashing in the local vicinity, and I don't recognize any constellations right now in this particular attitude.
585435
CAPCOM
Okay, Jim. If that status changes, please let us know.
585445
CDR
Roger. We're continuing to drift.
585448
CDR
Okay, use your TTCAs to roll.
585509
CAPCOM
And Aquarius, Houston, I've got some circuit breakers you can open to power down displays. In addition, I have a P30 maneuver PAD. Over.
585520
CDR
Roger. Standby. Get the CS - get the PAD book.
585528
LMP
Get the LM data - get the LM - book.
585532
CDR
And, say - we're getting the PAD book now, Jack - and say the first power down?
585538
CAPCOM
Okay, I have some circuit breakers that you can open up in order to power down displays.
585545
LMP
Okay. Standby 1, Jack. I'm going to get my COMM carrier on.
585551
CDR
No, no, no, Get the - get the Command Module PAD book - alright, tell you what, get all the LM stuff. Give me the LM stuff right now. Jack, give me the LM stuff.
585708
CDR
Alright, Jack.
585711
CDR
Hey, what do you need out of here?
585713
CMP
Can you give us the ?? data?
585720
CDR
Here.
585822
CDR
Looks like I'm cross-coupling here. I might as well -
585823
LMP
Yes, you are.
585830
CDR
Well, I want to get out of this roll.
585837
CDR
What if I go to -
585952
CDR
Hello Houston, Aquarius.
585956
CMP
Back on? Yes.
590004
CAPCOM
Aquarius, Houston. You're -
590006
LMP
Houston, Aquarius.
CAPCOM
- watching your middle gimbal there, aren't you? Go ahead, Aquarius.
590013
LMP
Okay. Go ahead with the breakers first, Jack.
590015
CAPCOM
Okay. You watching your middle gimbal there?
590021
CDR
Tell them we are.
590024
CMP
Your attitude is just straight pitch down, Jim.
590033
CMP
Okay, you're moving away.
590049
CAPCOM
Okay, Fred. I've got 6 circuit breakers for you.
590054
LMP
Okay. Go ahead.
590057
CAPCOM
Okay, they're all on panel 11. Row 1, under AC BUS B, open HELIUM PQGS for PROPELLANT DISPLAY.
590107
CDR
It's OPEN.
590108
CAPCOM
On row 2. FLIGHT DISPLAYS, open THRUST, open MISSION TIMER, open RNG/RNG RT/ALT/ALT RT, and open the AC BUS A RNG/RNG RT/ALT/ALT RT.
590125
CDR
They're OPEN.
590126
LMP
Okay, they're all OPEN.
590127
CAPCOM
Okay. On row 4, PGNS, SIGNAL STRENGTH DISPLAY.
590139
LMP
It's OPEN.
590142
CAPCOM
Okay, that concludes the power down of displays. And I have a P30 PAD for you.
590154
LMP
Okay, go ahead.
590157
CAPCOM
Okay, the purpose is a pericynthion plus 2 hours DPS abort. NOUN 33: 079:25:26.48. +1633.0, -0014.5, -0751.5. Apogee not applicable, perigee is +0020.5, 1797.7, 8:35. 268, 264. +1641.0, -0014.5, -0733.8. COAS is N/A.
  • NOUN 33: time of burn
  • NOUN 81: change in velocity X, Y, Z (∆V in feet/sec)
  • NOUN 42: apogee, perigee, total ∆V
  • Burn duration
  • FDAI roll and pitch
  • NOUN 86: change in velocity (∆V in feet/sec) in the AGS coordinate space
590319
CAPCOM
And I have two gimbal trim angles for you which will be updated. Right now, however, we want you to go with pitch 5.86, roll 6.75. Over.
590338
LMP
What was that for?
590340
CDR
Pitch and yaw, maybe, huh?
590342
LMP
Okay. What was the last two this you gave me, a pitch and roll angle for what?
590348
CAPCOM
That's for your DPS trim.
590349
CDR
Those were gimbal angles for - pitch and yaw.
590354
LMP
Ah, Roger. GDAs.
590357
CAPCOM
Yeah, that's what I mean. Sorry.
590358
LMP
Pericynthion plus 2. Okay, DPS pericynthion plus 2, at 079:25:026.48. +1633.0, -0114.5, -0751.5. HA N/A, HP +0020.5, 1797.7. 8:35. 268, 264. +1641.0, -0014.5, -0733.8 -
590442
CDR
Did we lose water in the -
590444
LMP
N/A on the COAS, and you gave me GDA angles of: pitch 5.86, and you want roll 6.75.
590456
CAPCOM
Good readback, Fred.
590500
CDR
Yes, lose - get all the little bags you can with water.
590507
CAPCOM
Aquarius, Houston. Say again, please.
590513
LMP
Okay, we didn't answer back there, Jack.
590516
LMP
Check to see if you're on VOX.
590520
CDR
No.
590522
LMP
Neither am I. Okay.
  • Clearly at least one of them is indeed on VOX.
590530
LMP
Why the hell are we maneuvering at all now? Are we still venting?
590534
CDR
Well, we're ATT HOLD for one thing - I mean, we're at MIN IMPULSE.
590539
LMP
No, I mean why can't you null them out somewhere?
590542
CDR
Every time I try to - I can't take that doggone roll out. I got to wait until we get around to the bellyband.
590550
LMP
Wait a minute. Do you - you fight roll by using the TTCA left/right. That's what you need to play with.
590605
CDR
Okay, we'll try that. Let me get around though. Let's roll. Let it roll all the way.
590611
LMP
Yeah, you can't let it roll all the way!
590613
CDR
I know. I know. But I mean -
590616
LMP
Okay, until it's upside down at least, huh?
590619
CDR
Yup.
590619
LMP
Okay.
590623
LMP
Well, should I ask him what the return time on that one is? Or are you interested?
  • Splashdown
590631
CDR
Let's get the first things first.
590643
LMP
Oh, you don't want to hear. Let me figure some times out, here. That's at 79, and what are we at now? About - do we - do we - we don't even have computer time, do we? Nope.
590700
LMP
Hey, Jack? Do you still have a mission timer? You don't? Okay.
590707
CDR
Okay, let's ask - let's ask Houston to give us a mission timer - computer time. They can uplink it to us. Yeah, hold it.
590718
LMP
Go ahead.
590720
CDR
Houston, Aquarius.
590721
CAPCOM
Go ahead, Aquarius.
590726
CDR
You know, we don't have a - I don't think we have a computer clock going, and why don't you uplink that stuff to us?
590731
CAPCOM
Roger.
590741
CAPCOM
And Freddo, I got some fast circuit breakers on panel 16 for you.
590749
LMP
Okay, go ahead.
590751
CAPCOM
Okay. On row 1 under FLIGHT DISPLAYS, SYSTEM ENGINEER X-POINTER, OPEN. Under RCS B -
590800
LMP
It's OPEN.
590802
CAPCOM
Open the TEMP/PRESS DISPLAY FLAGS and PQGS/DISPLAYS.
590810
LMP
Okay. They're both OPEN.
590812
CAPCOM
Okay, Fred. On row 3 under COMM, open DISPLAYS and under ECS, open DISPLAYS.
590825
LMP
Okay. COMM DISPLAYS, ECS DISPLAYS - both OPEN.
590828
CAPCOM
Okay, and two more. In row 4 under HEATERS, open DISPLAYS and under EPS, open DISPLAYS.
590840
LMP
Okay. HEADERS DISPLAY, EPS DISPLAY OPEN. And I've long since had all the lights off; floods, etc.
590855
CDR
Where are those bags? Where are those bags for weighing water in the PLSS?
590902
LMP
Why?
590903
CDR
We're going to fill up command module water.
590909
LMP
Hell, do you need a QD -
590914
LMP
- Jim. No way to get ours in there, I don't think.
590937
LMP
Hey, Jim -
590945
CDR
I wonder if one of our water - jet is - okay, let's control -
590957
CDR
What else can we fill up there?
591001
CAPCOM
Aquarius, Houston. We're not going to be able to uplink your time because of the IU, and we have a frequency problem there. But what I'd like to do is give you a time to set up on your mission timer and give you a mark and then you can put it into the DSKY from there. Over.
591026
CDR
Okay, standby.
591027
LMP
Wait a minute. Why do we need a mission timer right now, anyway? I mean, that bad - they'd tell us.
591032
CDR
Well, I'd rather have a timer going so that we - then we can put it in the DSKY. Then we shut down the mission timer.
591037
LMP
Oh, is that what you want to do?
591038
CDR
Yeah. Hey. OMNI.
591047
CDR
Switch them. Okay, let's fire up the mission timer.
  • Lovell is a step ahead of mission control here; the antenna gets switched before the request makes it up.
591059
CAPCOM
Aquarius, Houston, we need FORWARD OMNI.
591106
CDR
FORWARD OMNI.
591107
LMP
Say again, Jack.
591109
CDR
FORWARD OMNI.
591112
LMP
I am.
591120
LMP
Okay, Houston. If that call was an OMNI switch, I'm in FORWARD now.
591129
CDR
Okay, Freddo. how do I get the mission timer up? Gotta get the mission timer cranked in.
591134
LMP
You got it on?
591135
CDR
I got the mission timer circuit breaker in.
591138
LMP
Okay, we're going to probably need NUMERICS LIGHTING. There you go, you got it.
591147
CAPCOM
Aquarius, Houston. I think we've got a better way of getting your mission time up.
591157
CDR
Go ahead with it.
591200
CAPCOM
Okay, we can do a VERB 55, ENTER. And then put in R1 -00088. In R2 -00059. R3 -03274.
  • This works because Houston knows when the computer was turned on, and therefore the time it is counting up from. All that is needed is to add the mission time elapsed prior to power-on; ENTER may be pressed at any time.
591228
LMP
Watch the crappin' attitude.
591232
CDR
We're okay.
591237
LMP
God damn; I wish you'd get to something I know.
591241
CDR
Well, as soon as you get over here, we'll stop it with the TTCA.
591245
LMP
Okay.
591246
CAPCOM
And Aquarius, Houston. We've got you both on VOX.
  • Perhaps the salty language motivated CAPCOM on this item.
591254
LMP
They've got what?
591256
CDR
You want us on VOX, Jack?
591258
CAPCOM
We have you on VOX. We're reading you loud and clear and the clock took good.
591318
LMP
Okay. Looks like we're on the FDA route there, Jack.
591339
LMP
Okay, Jack. How do you read me on NORMAL VOICE now?
591342
CAPCOM
Hearing you 5 square, Fred.
591347
LMP
Okay.
591412
CAPCOM
And Aquarius, we're ready for a VERB 74 when you can give it to us.
591423
LMP
You got it.
591425
CAPCOM
Okay. And one other thing we noticed: when you pressurized the RCS, we got an increase in pressure in the ascent tanks, and so we want to have you verify that the ascent feeds are closed. In order to do that, on panel 11, close the ASCENT FEED 1 and 2 circuit breakers - and cycle the Parker valves, and then open the ASCENT FEED circuit breakers on panel 11.
591508
CDR
Completed, Houston.
591511
CAPCOM
Okay, Jim. Thank you.
591753
LMP
And Jack, Aquarius. What kind of return time does this maneuver give us?
591802
CAPCOM
That puts you back in the water at 133 hours.
591812
LMP
133, eh?
591813
CAPCOM
Affirm.
591824
CAPCOM
And that's an Atlantic landing site.
591832
LMP
Atlantic landing?
591836
CAPCOM
Affirmative. That's the PAD we've given you, but we may change our minds later on. We want you to have this info for now. And that's the minimum -
591847
LMP
Okay.
CAPCOM
- minimum time return.
592009
CAPCOM
Aquarius, Houston. We've got to change the REFSMMAT to the one to which you're aligned. So we'd like to have P00 and DATA and we'll ship that up to you.
592021
CDR
Roger.
592031
LMP
Okay, you got it, Jack.
592034
CAPCOM
Roger. Coming up.
592122
CAPCOM
Aquarius, could you give us DATA, please?
592133
CDR
Okay, Jack, you got it.
592133
LMP
He's got the updata link - the DUA breaker may not be in, Jack.
592144
CAPCOM
Okay, Fred, and close the DUA breaker.
592152
CDR
It's in now, Jack.
592154
CAPCOM
Okay, Jim, and it's coming up now. Thank you.
592804
CAPCOM
Aquarius, Houston. We're finished with the uplink. The computer's yours. We'd like to power down the DUA, so pull the DUA circuit breaker please.
592814
LMP
Okay. Updata link breaker's coming OPEN.
593625
CAPCOM
Aquarius, Houston. We'd like to have AFT OMNI, and we're going to lose contact with you for about a minute here while we try to establish tracking. And our latest data shows that your closest approach to the Moon is going to be 60 miles perigee, over.
593644
LMP
Okay. Closest approach, 60 miles, and I'm sitting on AFT OMNI now.
593650
CAPCOM
Roger, we'll probably be going off the air here for about a minute.
593918
(note)
<< A phone conversation is caught here between CAPCOM and Warren North, Chief of Flight Crew Support, coördinating work with the astronauts and engineers working in the simulators on the ground to support the crew. >>
594112
CDR
Houston, Aquarius. Over.
594114
CAPCOM
Go ahead, Aquarius.
594119
CDR
Okay, we're thinking of rigging up the urine dump to the side hatch.
594129
CDR
We're thinking about rigging up the urine dump to the side hatch to save urine heater power. What do you think?
594136
CAPCOM
Standby 1.
594142
CDR
Or better still so we can - won't freeze up our urine dump.
594148
CAPCOM
Roger, that sounds like a good plan, Jim. Why don't you go ahead with that one?
594259
CAPCOM
Okay, Aquarius. Down here we're getting regrouped, trying to work on your control modes and trying to set up something for PTC and taking a look at consumables as opposed to flight plan, and so forth. And as soon as we get all that information, we'll pass it up to you. We also have the 14 backup crew over in the simulators looking at docked burns and also trying to see what kind of alignment procedures they can come up with for looking at stars out the window. So if you ever are able to see any stars out there and think you can do an alignment out the window, why let us know.
594340
CDR
Okay, Jack. Right now we're not able to. The sunlight's reflecting off the thrusters and whatever debris came away at the time of the mishap is still with us, such that the stars are hard to find. And why - what respect do you want us to do the stars out the window - just to check the LMS run, is that correct?
594404
CAPCOM
That's affirm. We'd like to correlate what information we get with yours, so that if we can use it to update the platform, we can.
594422
CAPCOM
What we're really trying to do, Jim, is see if we can do a COAS align so we can power down the platform.
594525
CDR
Houston, Aquarius. We're getting an awful lot of static on the uplink now, and we're not reading you at all.
594539
CDR
I have good signal strength and I'm on AFT OMNI.
594551
CAPCOM
How do you read now, Aquarius?
594706
Guest CAPCOM
Hey, Jim, do you suppose that you could orient the LM so that the Service Module would be between you and the Sun? I believe you could see - recognize constellations out your front windows then.
  • This is (yet another NASA legend) John Young passing up advice learned on Apollo 10.
594747
CAPCOM
Aquarius, Houston. Radio check.
594814
CDR
Okay, Jack. How do you read now?
594817
CAPCOM
Okay, hearing you 5 square now, Jim. And the question we have is: is there some way you can orient the spacecraft so that the Service Module is between the LM and the Sun so you can recognize constellations out the window? And secondly, can you see anything out the AOT?
594928
CAPCOM
Aquarius, Houston. How do you read?
595346
CAPCOM
Aquarius, how are you reading me now?
595656
CAPCOM
Aquarius, Houston. How do you read?
595708
CAPCOM
Aquarius, request FORWARD OMNI, please.
595822
CAPCOM
Aquarius, Houston. Request FORWARD OMNI. How do you read?
595906
LMP
Okay, Houston, Aquarius. How do you read?
595908
CAPCOM
Hello there, Aquarius. Loud and clear. How do you read me?
595914
CDR
There's an awful lot of background -
595915
LMP
Okay, we've got a lot of background static, Jack. You're down in the mud. You having a ground problem?
595923
CAPCOM
What we tried to do was to get the IU frequency shifted off a little bit so that we'd have less interference. I think it'll come up - what we want you to do is turn on your descent oxygen and turn off your ascent oxygen. Over.
595938
CAPCOM
And request FORWARD OMNI.
595943
LMP
You're unreadable, Jack. We've got our signal strength meter - right now it keeps wavering up and down. The best I'm getting is about 2.4 AGC.
  • Apparently, the crew have popped back in their COMM DISPLAY breaker to resolve the COMM issue, which means -
595953
CAPCOM
Roger. Request FORWARD OMNI.
595958
LMP
I am on FORWARD OMNI. I've been on FORWARD OMNI.
  • - that they already knew to be on FORWARD OMNI. This in turn means that INCO's diagnosis of the problem wasn't quite right.
600044
LMP
Okay, how do you read, Jack?
600046
CAPCOM
I'm hearing you 5 square, Fred. How me?
600113
CAPCOM
Aquarius, Houston. How do you read?
600203
CAPCOM
Aquarius, Houston. Radio check.
600210
LMP
Okay, every time you transmit, Jack, the AGC starts to drop off and the static level cranks up.
600218
CAPCOM
Okay, Fred. You're loud and clear.
600225
LMP
I wish you were.
600230
CAPCOM
Fred, go to DESCENT Oâ‚‚.
600235
LMP
DESCENT Oâ‚‚. Roger.
600405
CDR
Hello Houston, Aquarius.
600408
CAPCOM
Hello there, Aquarius. How do you read me now?
600423
CDR
Hello Houston, Aquarius.
600426
CAPCOM
Aquarius, Houston. Go.
600431
CDR
Okay. That's the first clear word we've heard from you, Jack. Do you think it could be my pitch attitude that's breaking up your incoming? I guess you've been hearing us.
600442
CAPCOM
We have been hearing you, and the problem is on the ground. I hope we have it corrected now.
600451
CDR
Okay. That sounds good.
600453
CAPCOM
We're considering powering down the PGNS but we want to know what capability you have to do a coarse and fine align. And we read your conversation about being unable to see out the window very good. How about out the AOT?
600526
LMP
He's looking now.
600530
CAPCOM
Okay, and the other thing we thought you might try is to put the Service Module between you and the Sun, and then to see if you can see anything out the window in that attitude.
600543
Guest CAPCOM
The reason that we think that that would work is that it worked on Apollo 10. It made the constellations all recognizable when we put the Service Module - in our case the LM, between us and the Sun.
  • Once again, this is Apollo 10 CMP John Young.
600600
CAPCOM
AFT OMNI, Fred.
600606
LMP
You're down in the mud again, Jack. And it appears that some other circuit is feeding through on there with you.
  • Enough so that Fred couldn't even tell that it wasn't Jack speaking.
600614
CAPCOM
Roger. AFT OMNI.
600642
CAPCOM
Aquarius, AFT OMNI.
600729
LMP
Okay, you're down in the mud again, Jack. Lots of background static.
600810
CAPCOM
AFT OMNI, Aquarius.
600900
CAPCOM
Aquarius, Houston.
601118
LMP
Okay. Houston, Aquarius. How do you read?
601821
CAPCOM
Aquarius, Houston. How do you read?
602246
LMP
Hello Houston, Aquarius. How do you read?
602249
CAPCOM
Hello there, Aquarius. Loud and clear. How me, now?
602254
CDR
Okay, we're reading you loud and clear, Jack. I hope it stays this time.
602258
CAPCOM
Okay. We'd like to brief you on what our plan is. We're, at this time, water critical in the LM. So we'd like to use as little as possible. To do this, we're going to plan to make a free-return maneuver of 16 feet per second at 61 hours, which is 37 minutes from now. Then we're going to power down the PGNS, and then we'll - at 79 hours, we'll go ahead and make another abort maneuver to kick what we've got. But we'd like to get that PGNS powered down as soon as possible.
602339
CAPCOM
That would be after the midcourse and - so, how do you feel about making a 16 foot-per-second burn in 37 minutes?
602349
CDR
Well we'll give it a try, Jack, if that's all we've got. That's a 16 foot-per-second DPS burn in 37 minutes?
602357
CAPCOM
Roger. We're working up a PAD for it, but we want to know what you think about doing it at that time.
602408
CDR
Well, we'll do it. Could you give us a little bit more time?
602431
CAPCOM
Okay, Jim. We'd like to get a suggested time from you. We can figure out a free-return maneuver for any time you want to give us, so if you'll give us the time you'd like to shoot for, we'll figure out a PAD.
602447
CDR
Okay, that sounds good. I think if we have a little bit more time - we want to do it right. Standby 1.
602504
CDR
Let's shoot for an hour if we can, Jack. How's that?
  • Prepping for a midcourse burn was normally scheduled for around 75 minutes, and that's with the ready-to-go SM SPS. The LM DPS normally took 2 hours to activate, so even an hour is rather compressed.
602515
CAPCOM
Okay, Jim. How about 61 hours and 30 minutes? That's an hour and 5 from now.
602524
CDR
Okay. We'll do it and we want to be sure we talk back and forth, now, to make sure we get this burn off right.
602531
CAPCOM
Affirm.
602535
LMP
Okay. In the interim, Jack, I looked around again and I saw that we have a radar and a landing radar heater breaker in. Can I pull those out?
  • CONTROL noticed these around 58:02 and 58:11, but the instruction never made it up to pull them.
602546
CAPCOM
Affirmative. Pull them both out.
602552
CAPCOM
And now we want to ask you a question about alignments and so forth: we wanted to know if you can see any stars out of the AOT. We also wanted to know if you could use the Service Module to cast a shadow on the LM windows and then look out the windows to see stars for a P51 COAS alignment.
602614
CDR
Okay, in this attitude, Jack, that we're pitching around, I cannot use the AOT to see stars. We - we're just not able to see them at all. Now, we may be able to maneuver off in yaw or - and/or roll, and see stars. Right now, we haven't been able to. The AOT is useless. The Command Module structure is just radiating too much light into the - into the telescope.
602641
CAPCOM
Okay. And how about using the Service Module to cast a shadow on the Commander's window? If you do that, can you see stars for a COAS alignment?
602655
CDR
We could give that a try, Jack, although I don't know how successful it will be. We tried to do it; the light shines off our quads which makes it difficult to see stars. We do have the Earth and Moon, if that can be of assistance.
602718
LMP
Another problem: right now, Jack, I'm looking out the right window and it's pretty dark out that window but there are about a thousand or so false stars out here from - left over from some of the debris. It's hard to discern what's real and not real.
602739
CAPCOM
Okay. That's good information. And during the time that we see you're continuing to pitch, if you ever get in a position where you think the AOT might be of some use, we'd like you to periodically look out of it and see if you can see some stars that would enable us to get a P52.
602759
CDR
Okay, will do. And also, let me ask you a question: in this configuration, docked, we have to use the TTCA to control pitch and roll. And just how much can we use that without really changing our trajectory? We only have 60 miles to play with.
  • Lovell is concerned, because with the weight of the CSM attached to the LM the controls normally used to rotate the spacecraft don't do much (imagine twiddling a long stick between two fingers at its middle as opposed to at its ends), so he has to use the controls normally used to shift the spacecraft in space (now imagine flicking it in one direction at one end). But this has the potential to alter the trajectory of the spacecraft, and this close to the Moon very small adjustments can turn into miles of difference at the very far point.
602822
CAPCOM
Roger. We'll put that to them.
602845
LMP
Okay, Jack. Are you ready to go to work with me on the 2-hour DPS activation and contingency book, page 1?
  • If anybody has this activation checklist, please send it our way!
602855
CAPCOM
Roger. We're ready to go.
602905
LMP
Okay, item 1 we can - 1 through 5 we can scratch off as done. Is that correct?
602915
CAPCOM
Standby 1, Fred.
603019
CAPCOM
Okay, Fred. Let's go ahead. Step 1, page 1. Everybody's listening.
603028
LMP
Okay. I've looked around, and I've essentially done steps 1 through 5 with the exception of floodlights and utility lights, and I think we'll just do without those.
603040
CAPCOM
Roger. Your choice.
603047
LMP
Okay. On EPS activation, we're through step - we're through that - bottom of that page. That's all done.
603058
CAPCOM
We concur. Page 2.
603113
LMP
Okay, in essence, we've circumvented step 4, and we're not sitting with all 4 acs - descent BATs on high voltage taps, so I'll scratch off step 4.
603128
CAPCOM
Roger, and in step 5 we want to leave INVERTER 1 circuit breaker OPEN.
603137
LMP
Roger. In step 5, we'll leave INVERTER 1 CB OPEN.
603141
CAPCOM
Omit step 6.
603154
LMP
Okay. For the time being, our mission timer is the computer. So mission timer activation - scratch off.
603205
CAPCOM
Roger.
603210
LMP
Okay. We've done the primary glycol loop activation.
603215
CAPCOM
We verify it.
603229
CAPCOM
Aquarius, we recommend you leave the caution and warning off on page 3.
603236
LMP
Okay, I was going to say that next. Page 3 we'll just scratch item 1. And item 2, I've already got the RCS heaters on. And I don't know if I gave you the time or you got the time on the PRIMARY EVAP FLOW number 1 OPEN.
603303
CAPCOM
We got the time.
603310
LMP
Okay. Let's go to the CB pages now.
603329
CAPCOM
Freddo, did you close the ENGINE CONTROL breaker on panel 11?
603338
LMP
What control was that, Jack?
603341
CAPCOM
Did you close the S/C ENGINE CONTROL breaker on panel 11? As we got step 1 there on page 3.
  • STAB/CONT; stabilization and control.
603349
LMP
Okay, the -
603355
LMP
Okay, yes. The EPS DESCENT ECA CONTROL breaker is CLOSED on 11.
603401
CAPCOM
Roger, and how about the - on panel 11, S/C ENGINE CONTROL, CLOSED?
603411
CAPCOM
AFT OMNI, Fred.
603416
LMP
Okay.
603420
LMP
We're AFT OMNI, and we have the S/C ENGINE CONTROL breaker CLOSED.
603425
CAPCOM
Roger. Let's go on with the circuit breaker panel checkout.
603435
LMP
Okay. I'll just give you - I think it'll be easier, here, to give you what I got in.
603442
LMP
Okay, in the top row on 11, we have the four AC BUS TIE breakers IN and the AC BUS VOLTS breaker IN, and that's it.
603456
LMP
Second row, we have the four TCA breakers IN. We have the GASTA under FLIGHT DISPLAYS and COMMANDER's FDAI. And likewise under AC BUS A, we have a GASTA and a COMMANDER FDAI breaker IN. That's it.
603517
LMP
On row 3, we have a SIGNAL CONDITIONER 1. We have the ATCA (PGNS). We have the ENGINE CONTROL breaker, ATTITUDE DIRECT CONTROL breaker, and the - under LIGHTING, ANUN/DOCK/COMPONENT breaker IN. And one other: ED LOGIC POWER A - ED LOGIC POWER A is also IN.
603541
CAPCOM
Copy.
603545
LMP
Okay, under the fourth - fourth row, we got all the QUAD HEATER breakers IN. SUIT FAN 1. Under ECS, GLYCOL 1 and 2.
603602
LMP
And under COMM we have COMMANDER AUDIO IN. And PGNS LGC/DSKY, IMU STANDBY, IMU OPERATE, and that's it.
603617
LMP
Okay. In the bottom row: EPS, we have the BAT FEED TIE both IN, and we have the CROSS TIE BALANCE LOADS IN, the X-LUNAR BUS TIE, DESCENT ECA CONTROL, DESCENT ECA, and the DC BUS VOLTs breaker.
603639
CAPCOM
Roger, we copy.
603639
LMP
That completes it for panel 11.
603641
CAPCOM
Okay, standby.
603645
LMP
Okay.
603654
LMP
As I see it, some of the checklist are - we need the DECA GIMBAL IN sooner or later -
603700
CAPCOM
That's affirm. Close the DECA GIMBAL.
LMP
- and probably - okay, DECA GIMBAL - and sooner or later, we're going to need DECA POWER, I guess also.
603716
CAPCOM
Alright, DECA POWER will come up later in the procedure, Freddo.
603721
LMP
Okay.
603842
CAPCOM
Aquarius, Houston. On your circuit breaker checklist, on panel 11 and 16, we want you to configure the panels as outlined in the checklist.
603858
LMP
Okay. You want us to configure as per checklist. Okay, we'll do that.
603903
CAPCOM
That's right. Close the black ones and open the white ones.
603912
LMP
Yeah, I think we can manage that.
603919
CDR
With the Activation power-up, we're starting right now.
604012
CDR
Houston, we might as well leave our RCS TCAs IN, right?
604023
CAPCOM
Affirmative, Jim. Leave your RCS TCAs in on panel 11.
604030
LMP
Yeah, I just used my Pentel pen and made those white ones black ones.
604035
CAPCOM
Roger. Same on 16, Fred.
604040
LMP
Roger.
604045
CDR
And you might look there, Houston, to see what circuit breakers aren't required, like the tape recorder.
604053
CAPCOM
We're looking.
604141
CAPCOM
Okay, Jim. On panel 11 over there, you can also leave open the RENDEZVOUS RADAR HEATER breaker and the LANDING RADAR HEATER breaker, in addition to the tape recorder.
604155
CDR
They're out.
604205
CDR
I'm leaving a few in, Jack, too, like the SUIT FAN 1 is still IN, RCS SYSTEM is still IN, the TCAs.
604213
CDR
ATTITUDE DIRECT CONTROL is IN.
604218
CAPCOM
Roger.
604233
CDR
How about if I leave the VHF A and B OFF?
604241
LMP
I switched to FORWARD OMNI.
604252
CAPCOM
Okay, we can leave the VHF powered down too.
604301
CDR
And do you want the SECONDARY S-BAND?
604305
CAPCOM
Negative on SECONDARY S-BAND. Leave them open.
604314
CDR
UP DATA LINK is IN. Do you want that in or out?
604322
CAPCOM
Leave the UP DATA LINK OPEN. We'll call for it when you want to put it in.
604437
LMP
Okay, Jack. On panel 11 on the top row, do you really want the PROPULSION PQGS and ASCENT HELIUM REGs IN?
604454
LMP
And also the SYSTEM ENGINEER X-POINTER breaker.
604459
CAPCOM
Roger. Negative on the PQGS. Negative on the ASCENT HELIUM REG. And negative on the X-POINTER.
604517
LMP
Okay. On the second row, I'm going to leave the FLOODLIGHT breaker open.
604524
CAPCOM
Concur.
604531
LMP
And we're again up to - do you want the CWEA enabled?
604539
CAPCOM
Negative on the CWEA.
604545
LMP
Okay.
604602
LMP
Okay, since we're - are we going to power up the AGS or should I concern myself with the ATCA breaker?
604615
CAPCOM
Negative on the AGS.
604619
CAPCOM
However, Fred, we need the ATCA breaker IN.
604629
LMP
Okay, ATCA breaker's IN.
604635
LMP
Yeah - I guess for the backup power supply.
604641
LMP
Okay, how about ATCA AGS?
604644
CAPCOM
Negative on ATCA AGS.
604706
LMP
And I'm leaving the SUIT FLOW CONTROL breaker OPEN.
604720
CAPCOM
Let's close the SUIT FLOW CONTROL, Freddo -
604721
CDR
And Jack, OMNIs going now -
CAPCOM
- it doesn't take any current.
604730
LMP
Okay. Without suits it doesn't do us much good either, though.
604752
LMP
Okay, and are we going to continue to be able to operate off the OMNIs, Jack? So can I leave the S-BAND antenna powered down?
604818
CAPCOM
Okay, Freddo, we don't plan to use the steerable antenna, although we want to leave the heaters on. So it looks like you ought to open up COMM S-BAND ANTENNA, but leave S-BAND ANTENNA HEATERS closed.
604833
LMP
Roger. COMM S-BAND is OPEN, S-BAND HEATER breaker is still CLOSED.
604927
LMP
And on the bottom row, Jack, I'm going to leave the HEATER DISPLAY breaker out, which we had pulled before, and EPS DISPLAY. But I question: do we want the ASCENT ECA breaker in, as prescribed?
604947
CAPCOM
Standby.
604951
CAPCOM
That's a negative on the ASCENT ECA breaker, leave it OPEN.
605002
CAPCOM
And Aquarius, we need P00 and DATA -
605004
LMP
And Jack -
CAPCOM
- and we'll give you a state vector and target load.
605012
LMP
Okay. We need the UP LINK breaker in, then, now.
605017
CAPCOM
That's affirmative.
605023
CDR
Okay. And Jack, will you give us that - how about the ORDEAL breaker? Can I pull that? We don't need that, do we?
605032
CAPCOM
Negative on the ORDEAL. Leave it OPEN.
605048
LMP
And how about the ASCENT ECA breaker on panel 11? Jim has it in over there.
605102
CAPCOM
And on panel 11, ASCENT ECA can be OPEN.
605107
CDR
It's OPEN.
605127
CAPCOM
Okay, Aquarius. We're GO on the circuit breaker configuration as you have it now.
605136
LMP
Roger.
605204
CAPCOM
And Aquarius, tests in the simulator just showed that if you want to let the PGNS DAP hold your attitude for you, it will.
605216
CDR
Okay, very well.
605230
CDR
And Jack, because it will take quite a while to get back to the attitude, I think we ought to think about going there very shortly.
605238
CAPCOM
Roger. I have a PAD for you.
605242
CAPCOM
I have a P30 maneuver PAD.
605249
CDR
Roger - standby.
605254
LMP
Ready for it, Jack.
605259
CAPCOM
Okay, they want you to hold your maneuver until we finish making the LOAD. We haven't completed it yet. Are you ready to copy P30 maneuver PAD?
605308
CDR
That's affirm.
605309
CAPCOM
Okay, here we go. The purpose is midcourse correction for free-return. NOUN 33: 061:29:42.84. -0021.3, +0004.1, -0031.2. HA and HP are N/A, ∆V 0038.0. 0:31. 120, 298. -0021.3, +0004.1, -0031.2. COAS N/A. And I have your LM GDA angles: pitch 5.86, roll 6.75. Your DPS throttling: 5 seconds at 10%, burn the rest at 40%. Your ullage will be 2 jets for 10 seconds.
  • NOUN 33: time of burn
  • NOUN 81: change in velocity (∆V in fps)
  • NOUN 42: apogee, perigee, total ∆V
  • Burn duration
  • FDAI roll and pitch
  • NOUN 86: change in velocity (∆V in fps) in the AGS coordinate space
605457
LMP
Okay, Jack. We have a P30 maneuver PAD, a midcourse for free-return. NOUN 33: 061:29:42.84. -0021.3, +004.1, -0031.2. HA and HP N/A, ∆VR 0038.0. 0:31. 120, 298. -0021.3, +0004.1, -0031.2. COAS N/A. GDA angles, pitch 5.86, roll 6.75. DPS throttle 5 seconds at 10%, burn the rest at 40%. And we need a 2-jet, 10 second ullage.
605602
CAPCOM
That's a good readback, Fred. I'd like to verify, however, in NOUN 81 in VY, it's plus three balls 41.
605615
LMP
Okay. NOUN 81, VY is +0004.1.
605621
CAPCOM
Good readback. Let's press on with the checklist.
605628
CDR
Okay. And Jack, find out about using TTCA to maneuver with.
605632
CAPCOM
Okay. We're finished with the computer, it's yours. And we recommend using the TTCA to maneuver with.
605641
CDR
Roger.
605643
LMP
Okay, I'm back on the checklist, page 6, Jack. Under PGNS turn-on and self-test, we've done everything except the self-test here on this page. Do you want to do that at this time?
605729
CAPCOM
Okay, Aquarius. Negative on the PGNS self-test. Page 7.
605737
LMP
Okay. I'll scratch page 6. And on page 7, we're not going to activate the - or rather, we've had the S-BAND activated, ECS Activation I have all done. And at the bottom of the page, the docked IMU coarse align is done.
605803
CAPCOM
Roger.
605815
LMP
We've - okay, we've also completed, I guess in essence, all of page 8.
605822
CAPCOM
That's affirmative, and page 9 to boot. Scratch VHF; we've done the T-ephems.
605836
LMP
Okay, you've updated it, that's right. We cranked in the time.
605852
CDR
And Houston, let's go to Activation - or get into page 10 and see what we do there.
605858
CAPCOM
Okay. The only item on page 10 is to deploy the landing gear.
605906
CDR
Okay. We'll do that now.
610009
LMP
Okay. The landing gear are down and locked, Jack, and looking ahead now at page 11, we've done all of that.
610024
CAPCOM
We verify that. Page 12.
610031
LMP
Okay, and I assume in amongst all those numbers you pumped up, we got a REFSMMAT and STATE VECTOR, is that correct?
610038
CAPCOM
That's affirmative. You've got that, so you can delete page 12.
610051
LMP
Okay, on 13, you've read us up the fine align angles and we've cranked those in.
610101
CAPCOM
Affirmative.
610108
LMP
Okay, so now we're up to - we've got to do the DAP set, the gimbal/throttle test.
610113
CAPCOM
That's -
610120
CAPCOM
Okay, Aquarius. We recommend omitting the DAP set, gimbal/throttle test. Just make sure the gimbal - DECA POWER and DECA GIMBAL circuit breakers are closed.
610133
LMP
Okay. We're going to proceed now with the DAP set, gimbal/throttle test, is that correct? Or did you say delete it?
610140
CAPCOM
Aquarius, delete the DAP set, gimbal/throttle test. Just ensure that the DECA POWER and the DECA GIMBAL are closed.
610149
CDR
Okay, Houston. DECA POWER is OPEN at this time. Do you want me to close it?
610155
CAPCOM
Affirmative, Jim. Close the DECA POWER.
610200
CDR
It's CLOSED. We deleted that.
610227
LMP
Okay. Also out of that list, Jack, we need the COMMANDER'S THROTTLE set to THROTTLE and MIN.
610258
LMP
Houston -
610300
LMP
if I recall the launch set of the gimbals, the GDAs are not correct here, and where are we going to get those set for the burn?
610314
CAPCOM
Standby.
610333
CAPCOM
Okay, here's the word on the DAP set, gimbal/throttle test. Let's do step 1 and step 2, and that'll get our gimbal set.
610420
LMP
Okay, Jack. We're going to have to back up on this if we're going to follow the procedure here, which has us go MODE CONTROL PGNS AUTO. We're going to have to pull the TCA breakers to keep from firing jets.
610453
CAPCOM
Standby, Fred.
610529
CAPCOM
Standby on step 1, Fred. We're getting the word for you.
610534
CAPCOM
How do you like this sim?
  • Though many emergency scenarios were rigorously simulated and trained for by a simulation team that prided themselves on putting everybody through the wringer, many of the failure modes on Apollo 13 were never simulated or planned for as it was assumed the vehicle would simply be an immediate catastrophic loss.
610542
CDR
It's a beauty.
610610
CAPCOM
Okay, Aquarius, we recommend you do the DAP set and gimbal/throttle test as per the checklist. Go PGNS AUTO and proceed.
610621
CDR
Well, we're going to fire our thrusters as soon as we go to AUTO because we've got those thrusters in - the thruster circuit breakers. Do you want us to do that and stop?
610651
CAPCOM
Okay, Aquarius, we're recommending you go to AUTO, let the thrusters fire and settle down, and proceed with the test.
610706
CDR
We're in PGNS AUTO.
610709
CAPCOM
Roger. Your DAP is set, you're in wide deadband; that ought to do the trick.
610715
CDR
Roger.
610720
CAPCOM
Okay, we're looking at it, Aquarius; we're ready to proceed with the test.
610726
LMP
Okay, we're proceeding.
610752
LMP
Okay, and Houston, you -
610755
LMP
- you're looking at the weights now. Those are still good, right?
610801
CAPCOM
You're GO on the weights.
610906
CAPCOM
Aquarius, Houston. We'd like you to recycle on the DAP load and change your DAP to 32021. Over.
611106
CAPCOM
Okay, Aquarius. We're looking at your gimbal and we notice that we've got a 4-jet ullage loaded in the DAP and we gave you 2 jets on the PAD. But let's go with what we've got loaded. It'll be a 4-jet ullage.
611119
LMP
Okay.
611141
LMP
Okay, Houston. How does the GDAs look now?
611145
CAPCOM
The GDAs are GO as they are. Press on.
611209
CDR
Okay, Houston. We're going to do the DPS pressurization and checkout.
611216
CAPCOM
Standby 1.
611235
CAPCOM
Okay, your gimbals are within 0.3 and we're ready for the DPS pressurization and checkout.
611334
LMP
Okay, Houston. Do you want to follow up on page 15 with RCS checkout? In essence, we've kind of already done that.
611347
CAPCOM
You're right, Aquarius. Let's delete the RCS checkout.
611353
CAPCOM
And the DPS looks GO.
611543
CDR
Houston, we're going to do a PGNS AUTO maneuver to the attitude.
611549
CAPCOM
Standby on that.
611554
CAPCOM
Aquarius, we recommend driving it around there manually with a TTCA.
611559
CDR
Okay, we have to use the TTCA. Roger.
612110
CDR
We're going to AUTO now, Houston, to try to damp the rates. We're at the attitude.
612123
CAPCOM
Roger, Jim. We verify the attitude.
612128
CDR
Roger.
612337
LMP
And Houston, we'd like to confirm: do you want the VERB 65 ENTER in there?
612345
CAPCOM
Affirmative on the VERB 65.
612350
LMP
Okay.
612412
LMP
Okay, Jack. I've got another question on page 18. At 1 minute, I concur with MASTER ARM ON, but I wonder why I have to have the ABORT STAGE breaker in.
612427
LMP
We sure don't want any staging now.
  • This would drop the descent stage of the LM, which they need for getting home, as in addition to the better engine it contained consumables.
612438
CAPCOM
Aquarius, delete the ABORT STAGE circuit breaker CLOSE. Leave it OPEN.
612447
LMP
Roger. Will delete.
612456
LMP
Okay. Also, Jack, since we have 4-jet ullage versus 2, do you want - still want 10 seconds ullage or do you want 5 now?
612509
CAPCOM
Okay, Aquarius, we'll use automatic ullage.
612518
LMP
Okay. We'll just let the 7.5 second AUTO ullage do it.
612523
CAPCOM
Roger, and we'd like to do this in manual throttle, so on page 17 about two-thirds of the way down, THROTTLE CONTROL, MANUAL - vice AUTO.
612535
LMP
Okay. We're set to MANUAL.
612558
CDR
What's the 203 -
612606
CAPCOM
ENTER on the 203, Jim.
612611
CDR
We've got 203 on the DSKY now and it looks as though it requires work. Can we pass it?
612616
CAPCOM
Aquarius, ENTER on the 203.
612622
CDR
We hit ENTER.
612652
CAPCOM
Aquarius, we'd like to verify that your throttle is in the MIN position.
612658
CDR
That's affirm.
612700
CAPCOM
And in the event that you have to do a manual takeover, turn the ENGINE GIMBAL OFF, MODE CONTROL to ATTITUDE HOLD, and use the hand contr - use the TTCA.
612715
CDR
Roger.
612814
LMP
Okay, 1 +30 to burn.
612821
CAPCOM
Roger.
612846
LMP
Okay. MASTER ARM's ON. 1 minute.
612853
CAPCOM
Roger, Aquarius. You're GO for the burn.
612955
CDR
40 percent.
613004
CAPCOM
Okay, Aquarius. You're looking good.
613025
CDR
AUTO SHUTDOWN.
613040
LMP
Okay, you're looking at 16 85 now, Jack.
  • VERB 16 NOUN 85
613047
CAPCOM
Okay, you're GO on the residuals; proceed.
613055
LMP
Okay, when you say GO on the residuals, you mean don't trim them. Is that right?
613100
CAPCOM
That's affirmative. No trim required.
613107
CDR
Roger.
613218
CAPCOM
Aquarius, check your MASTER ARM OFF, please.
613245
CDR
Okay, Houston. Burn's complete. Now we have to talk about powerdown, and what you want us to do with the PGNS.
613253
CAPCOM
Roger. We're looking at that right now, and you'll be the first one to get the word.
613319
CDR
And Houston, it's doubtful right now whether we'll be able to see the stars in this configuration. The only way we could possibly get alignment is with the Earth and the terminator or the Moon and its terminator and I'd sure like to have you look at a powerdown - keeping the PGNS if at all possible.
613349
CAPCOM
Roger, Jim. We'll get the word for you.
613525
CDR
And Houston, we're in an ATT HOLD mode. Can we turn off the thrusters?
613541
CAPCOM
Standby on that one, Jim.
613814
CAPCOM
Okay, Aquarius. We're working on what's going to happen next. In the meantime, we'd like to take some high-power items off the line; so on panel 11, open DECA POWER and open DECA GIMBAL. On 16, open the ATCA breaker.
613836
LMP
Okay. On 11, we've got DECA POWER, DECA GIMBAL OPEN. On 16, we've got the ATCA breaker OPEN.
613938
CDR
And Houston, while you're thinking, see if you can come up with a procedure of perhaps using the Command Module optics with manual drive, if I have to look for stars.
613952
CAPCOM
Roger.
614124
CDR
And Jack, Aquarius. While you're thinking - before we had our COMM problems, we were wanting to know what to - whether we should hook up the side hatch urine dump system. So we wouldn't freeze up the normal urine dump feed.
614145
CAPCOM
Roger. We gave you a GO on that earlier. Sorry, you must have missed it. Use the side hatch for urine dump.
614155
CDR
Okay.
614156
CAPCOM
And how are the stars out the window now?
614213
CDR
Well, I'll look again, Jack, but at this attitude the Sun is reflecting off of - off of Quad 4 so bright that it's ruining any night vision. And we've still got particles floating around us. I'll have to take a long look and see if I can see any star patterns.
614235
CAPCOM
Roger.
614243
CAPCOM
And Aquarius, we're going to have to hand you over to a different site now, and we think maybe things will work better if this time we turn off the S-BAND TRANSMITTER/RECEIVER, and bring it back up in 5 minutes. You copy?
614259
CDR
Okay, standby 1.
614310
CDR
Okay, I understand you want us to turn off the S-BAND TRANSMITTER/RECEIVER and bring it up in 5 minutes. Is that correct?
614316
CAPCOM
That's affirmative.
614320
CDR
Tell us when.
614342
CDR
And you want us to maintain attitude control?
614346
CAPCOM
Affirmative on the attitude control.
614348
CDR
That's AUTO attitude control. Okay. We'll maintain AUTO attitude control.
614356
LMP
Okay, Jack. I'm back on the line now. On the S-BAND, you want me to turn off the TRANSMITTER/RECEIVER and the POWER AMPL to OFF for 5 minutes. Is that - when you give me the word - is that what you want?
614410
CAPCOM
Aquarius, leave the POWER AMPLIFIER the way it is. Turn the TRANSMITTER/RECEIVER OFF for 5 minutes.
614417
CAPCOM
Now.
614419
LMP
Okay, you tell me - you tell me when.
614422
CAPCOM
Okay, turn it off now. See you in 5 minutes.
614426
LMP
Okay, it's gone off. It's gone off for 5 minutes.
615105
LMP
- -
615244
CAPCOM
Aquarius, Houston. How do you read?
615252
LMP
Okay, you're loud and clear there, Jack.
615255
CAPCOM
Roger, same here. We're all - we're still discussing the next move.
615304
LMP
I figured it. Let's just make it a good one.
615318
CAPCOM
We're looking real close at water usage profiles, and right now things are kind of swinging toward leaving the IMU powered up and powering down the LGC. But we'll have more word for you shortly. And we recommend for sleeping that you leave one guy on watch. We recommend you don't make any urine dumps if you can help it, because it'll make the debris problem worse than it is now. And we have some items that you might want to transfer to the LM: some towels, some penlights, fecal bags, UTS. And do you have any more items that we can help you out with at the moment?
615417
LMP
Okay. Stand by on your latter list there, Jack. I understand no urine dumps; I guess we'll work through the UCD and all the bags we got. And real quick there, can you give a DAP load that we want in here now to conserve the RCS?
615521
CAPCOM
Okay. For attitude control, we're recommending manual control VERB 76 and watch your middle gimbal angle. Your DAP load that you have now looks good.
615537
LMP
Okay, it's ATT HOLD VERB 76 for the guy on watch. And the DAP load we've got right now is okay.
615818
CAPCOM
Aquarius, our decision for this time is to leave the IMU powered up, power down the LGC, and power down other nonessential items. We'll be coming up with a more precise checklist as soon as we can get it. Over.
615837
LMP
Okay. The decision is to keep the platform, power down the computer, and we'll be standing by for further word on the powerdown, Jack.
615847
CAPCOM
Roger.
615933
CAPCOM
And Aquarius, for your information, we now have a 136 mile perigee.
615942
CAPCOM
Confirmed by doppler.
615947
LMP
Okay, 136 mile perigee now. That's very nice.
620009
LMP
Oh. Wait a minute, Jack. Did you say pericynthion or perigee?
  • Closest approach to Moon.
  • Closest approach to Earth.
  • You can see why he'd be concerned about this.
620014
CAPCOM
I meant pericynthion.
620019
LMP
That's better!
620520
LMP
And Houston, we pulled out your UPDATA LINK circuit breaker, so if you want to update it for anything, let us know and we'll put it back in.
620528
CAPCOM
Roger, Jim. We will.

Along with breathable air, potable water, and propellant, perhaps the most critical spacecraft-supplied consumable resource was electricity. Suffice it to say that Apollo 13 could not have made it home without power, and the nature of the accident meant that power was in very short supply indeed.

The combined Command Module/Service Module (CSM) stack was powered by three fuel cells located in the Service Module, as well as five batteries located in the Command Module. The Lunar Module, on the other hand, had aboard only five batteries to support its mission. Typically, it relied on power supplied over an umbilical from the CSM whenever attached, so as not to needlessly drain its batteries.

Fuel Cells

At a very high level, fuel cells look very similar to batteries. They involve a metallic cathode and anode, and an electrolyte medium immersing and connecting the two just like a battery does. However, where a battery becomes depleted over time due to the static nature of these three components, a fuel cell avoids this problem by deriving its electric potential from constantly flowing and thus replenished chemicals on the porous cathode and anode ends.

{{figure:eps-thumbnail}}

The Apollo Fuel Cell design is known as an Alkaline or a Bacon Fuel Cell, and consumes pure hydrogen and oxygen gas pressure-fed from cryogenic tanks in the Service Module with a static potassium hydroxide (KOH) electrolyte mediating the two, ultimately producing electricity, heat, and potable water. On the anode side, the hydrogen gas reacts with spare hydroxide ions to produce water and electrons (2H₂ + 4OH⁻ → 4H₂O + 4e⁻), whilst on the cathode side oxygen gas and electrons returning from their circuit through the various powered components on the spacecraft would interact to form hydroxide ions (O₂ + 2H₂O + 4e⁻ → 4OH⁻). The electrolyte would carry the hydroxide ions across from the cathode to the anode to complete the sustained reaction loop.

While excess hydrogen could to some extent be separated from the water byproduct (which was potable and consumed by the crew) and recycled through the system, the oxygen gas was consumed as-needed, and any excess was simply vented out of the spacecraft. Indeed, both halves of the fuel cell gas subsystems would be periodically purged of stale gas to ensure their ongoing purity.

{{figure:o2-thumbnail}}

Reactant purity was quite important. Because the static electrolyte design employed by NASA did not naturally reject carbon dioxide, pure oxygen had to be used. This is because potassium hydroxide could break down or transform into potassium carbonate with the infiltration of carbon dioxide, a state known as elecrolyte poisoning. This could lead not just to reduced performance but indeed to dangerous explosive situations due to imbalances in the carefully measured chemical reactions. The pH Hi indicator on the MDC, which operated based on the acidity of the water byproduct of the reaction, was important as it provided a leading indicator of this potential situation.

Each of the three Apollo Fuel Cells actually contained 31 individual 1 volt cells, each of which carried out this reaction process, and which were wired together to provide the 28 volt baseline power the various components required at up to 1420 watts. The fuel cells were, due to the efficiency of cryogenic gas storage, expected to supply the vast majority of power for any given Apollo mission. The surviving operation of any one unit of the three was enough to ensure a safe return home, though nominally all three ran, distributed across the two DC buses.

Command Module batteries

The Command Module was equipped with three primary rechargeable batteries, lettered A through C and primarily aimed at entry and postlanding operations, and two pyrotechnic batteries whose job was simply to provide the juice to fire various pyrotechnic charges throughout the duration of the flight. All five batteries were silver oxide-zinc in chemistry.

Of the three primary batteries, typically only A and B were kept on the line, while C was kept in reserve. Each was rated for 40 amp-hours, most of which each could deliver at up to 35 amps. The connections between the batteries and the rest of the electrical system were managed by a combination of the Main Bus Tie Bat A/C and B/C selector switches, which paired battery C with either of the other two, and individual circuit breakers for each battery.

A battery charger onboard could be connected to any of the three to charge them. It took in both DC and AC power—the three-phase AC was used to boost the DC supply up to 40 volts, and phase A was used to run some of the control circuitry, which contained filters and sensors to ensure appropriate power delivery for the battery profile.

The two pyro batteries were typically kept entirely off the line until needed, to isolate them from the rest of the power system. They were never to be charged during flight. In case of pyro battery failure, careful manipulation of the circuit breakers could bring any of the three primary batteries in as a replacement.

CSM Main DC buses

The Command/Service Module combined spacecraft had two primary DC buses upon which power was routed. Not every component was connected to both buses, and in some cases redundant equipment was distributed between the two: of the three AC inverters, for example, one could only be connected to Main DC Bus A, the second only to Main B, whilst the third could be connected to either A or B.

Each bus had various diodes and current-sensing protections that would kick in to mitigate failure scenarios. An overload, for instance, would automatically disconnect the fuel cells from the system and warn the crew. Each bus was capable of handling all system load, so undervolts were not expected to occur. Of course, with a serious malfunction (as with Apollo 13) power generation could fall behind consumption and voltage could drop below 26.25V, the point at which an Undervolt warning light would appear.

Most of the components had individual protection via circuit breakers exposed on the Command Module panels. The circuit breakers were for far more than protection, however: they were used heavily to regulate which components were given power and when. Many of Apollo's checklists pertained to circuit breakers and the particular order they ought to be engaged and disengaged to ensure safe operation of the vehicle. It was also advantageous from a power consumption standpoint to keep components offline whenever they were not being used.

CSM AC power system

{{figure:ac-phases}}

Some components are easier to engineer given AC power than DC. Universal motors, for instance, are very easy to construct and reliable under operation when fed three-phase AC power (your home likely receives two-phase AC power, with the two phases oscillating at a 180° offset from each other; three-phase is the same concept but with three phases oscillating at 120° offsets instead).

AC power generation was done by the three redundant AC inverters; their connection to the DC bus to draw source power is discussed above. Each inverter was an eight-stage solid-state unit comprised of many components related to generating oscillation, managing and filtering harmonic noise, rectifying the signal, and other standard inverter tasks.

Any of the three AC inverters could then be output onto either or both of the two AC buses, numbered 1 and 2. Many of the components that fed off the AC buses had three individual breakers, one for each phase. Others depended only on a particular phase. A fourth AC ground wire was circulated alongside the power phases, just as your AC appliances at home have a ground prong to go with the two powered phases.

Lunar Module batteries

The Lunar Module was equipped with only batteries for operation. The five LM batteries were the same silver oxide-zinc batteries as found in the Command Module, but were much larger: the descent stage, intended to be left behind on the Moon, had four batteries worth 415 amp-hours each, while the two ascent stage batteries had a 296 amp-hour capacity. As a result the higher capacity, they weighed a fairly significant 57-61kg (125-135lb) each.

The batteries could be charged off of the Command/Service Module power system via an umbilical that fed through the interior of the docking tunnel between the two modules. Typically, the Lunar Module wasn't powered up at all until the Apollo spacecraft was already in stable lunar orbit, at which point the fuel cells could easily sustain both craft for the short duration before undocking and lunar landing. The umbilical was not intended to send power in reverse back to the Command/Service Module, a limitation that would end up being overcome over the course of Apollo 13.

The LM also featured an AC bus and two AC inverters.

If you wish to delve yet further into Apollo and spaceflight, you may be interested in the following ideas:

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There are no highway milepost signs in space, just vast swaths of nothing. This makes the problem of determining where exactly the spacecraft is—and indeed, even how fast it is traveling—a difficult task. In practice, the process of determining spacecraft position and velocity was accomplished through the combination of onboard inertial measurement instruments and ground-based tracking systems. The spacecraft's attitude, on the other hand, was determined and managed entirely using onboard instruments.

Inertial Guidance

Inertial Navigation Systems were relatively fresh inventions as of Apollo. They were created out of necessity along with the first ballistic missile and spaceflight missions, and by the time of Apollo were relatively well-understood. On Apollo, the Inertial Measurement Unit (IMU) was the instrument that performed most of the inertial measurement required.

{{figure:imu}}

As explained in the Spaceflight 101 Primer, the IMU involved a gyroscope: a powered spinning weight that created rotational inertia such that when mounted as a primary unit (called the Stable Member) within three freely rotating gimbal rings it would hold its orientation as the spacecraft it was mounted upon turned about. This is a lot like holding a compass in your hand and turning your body about in different directions while watching the needle stay still relative to the Earth, except around three axes rather than one, and with rotational inertia rather than magnetic force holding the central unit in place.

In addition to the rotary encoders (called resolvers) that read the gimbal ring orientations and deduced spacecraft attitude, there were also linear accelerometers mounted within the inner primary unit that measured spacecraft acceleration in three dimensions. However, velocity is the important measure required for navigation, and acceleration is a step removed from velocity. To obtain velocity, one must integrate acceleration over time: accumulate (add or subtract) samples of momentary acceleration as frequently as possible into a single overall value. Because this task is essentially impossible without a computer, inertial navigation was an early motivator for the miniaturization of computers. Even in P00 idle mode, the Apollo Guidance Computer would never forsake the task of integrating its state vectors over time.

Where velocity is acceleration integrated over time, position is velocity integrated over time. Each of the two levels of indirection between the physically measurable acceleration value and the desired position value required for accurate navigation added imprecision, and meant that onboard instruments could not alone adequately navigate the spacecraft. Imagine trying to precisely measure the distance traveled on a highway by nothing more than sampling your speedometer over time, and then imagine that you have not a speedometer but instead an accelerometer.

Something more precise is needed for accurate navigation, and ideally something that can directly answer the "where is the spacecraft?" question at any moment in time without relying on previous answers being correct.

Manned Spaceflight Network

{{figure:msfn-sites}}

An offshoot of the NASA Deep Space Network, the Manned Spaceflight Network (MSFN) was a collection of 14 ground, 4 sea, and 8 air-based stations around the world that tracked the Apollo spacecraft for the duration of its mission. Using large 26 meter (85ft) antenna dishes, these stations performed the critical operations of providing communications to and from the spacecraft as well as information about its position and velocity. After all, if one is to aim a communications dish at the appropriate spot in the sky, one must understand where the target object is.

The Deep Space Network had been in operation since 1958, and its primary task at inception was to track and maintain bidirectional communications with unmanned spacecraft. When the manned spaceflight program began, concerns around ceding system time away from extant programs led to the establishment of the MSFN and the procurement of additional on-site equipment to increase the operational capacity of the existing stations. Using techniques such as radar ranging and doppler analysis, the communications signal itself could be used to help triangulate the position of the spacecraft. Because this was an instantaneous measurement from the stability of the ground, these measurements were highly reliable.

One MSFN station in particular would become crucial during Apollo 13: Honeysuckle Creek. Located in Canberra, Australia, the station was on duty during the communications issues experienced around four hours following the Apollo 13 accident caused by signal interference between the Lunar Module and the S-IVB booster stage on its way to impacting the Moon. The Honeysuckle Creek website linked above is an excellent resource for learning more about the ground tracking network in general.

Determining Attitude

The MSFN ground tracking stations help augment the accuracy and reliability of the onboard IMU by providing accurate point-in-time measurements of spacecraft position and velocity. But with the IMU alone, measurement of spacecraft attitude (orientation) depended exclusively on the accuracy over time of a gimbaled gyroscope (or the backup BMAGs which could measure only momentary rotational accerelation). If the IMU hit gimbal lock, or if the gyro itself simply drifted over time due to friction and vibration, as it was known to do, the attitude numbers lost their validity. Something else was required, which again would ideally provide a definitive answer without relying on prior measurements.

{{figure:aot-starchart}}

The solution was the same as that employed by mariners upon the ancient sea: to look to the stars. A built-in onboard sextant called the Alignment Optical Telescope (AOT) could be used to sight known stars. Once star positions were confirmed and locked in, the computer could calculate its attitude relative to the universe and a fresh set of numbers could be obtained.

The AOT had some neat tricks: the swivel mount had sensors in it, so once the astronaut had it aligned with the desired star, there was no need to read and key in numbers: the computer could read them automatically once instructed to.

The process of spacecraft alignment was referred to by the AGC program numbers used to execute the sighting and alignment: P51 and P52. A P51 determined from scratch the spacecraft attitude relative to the IMU, using the telescope to sight two different known stars. Upon completion of alignment process, the computer would output a number indicating the relative error of the resulting numbers: inaccurate sightings of the stars relative to each other could be detected in the math that followed. When the error number read all zeroes, this was referred to as "all balls". A P52, on the other hand, would automatically point the AOT to allow the crew to visually reconfirm the previous sighting through the telescope. If things still looked good, the program would proceed to physically reorient the central Stable Member of the IMU to a desired angle, typically to best-avoid gimbal lock.

Of course, this entire process depends on being able to reliably identify particular stars. Apollo 13's accident meant that thousands of tiny shiny debris particles were adrift in space in a cloud around the spacecraft, obscuring or confusing the star field behind them. This, along with glare from the still-attached CSM, led to issues and frustrations in attempting to align the platform for the critical burn roughly five hours following the accident to set the ship up for a safe slingshot back home around the Moon.

{{figure:lifecycle}}

One of the biggest early decisions with Apollo was how exactly the spacecraft would be sent to the Moon and back such that it would have enough fuel. The Moon has its own gravity, of course, and while it isn't nearly as strong as the Earth's, it still costs a lot of fuel to land on and launch from it. Some felt like this wasn't a big deal, and that we could just send one gigantic rocket up, the whole ship would land on the Moon, and take off again to come home. A more likely candidate was the Earth-Orbit Rendezvous profile, which would have seen the Apollo spacecraft and fuel sent up to Earth orbit in chunks and assembled before departing for the Moon, again for a wholesale landing.

The idea that eventually won was instead the Lunar-orbit Rendezvous, initially dismissed as it was scary to contemplate rendezvous and docking maneuvers by the Moon, so far away from home. The idea was to minimize the amount of fuel one had to carry down to the Lunar surface, and thus minimize the amount of fuel required to then depart from the Moon. This is what led to the split Command/Service Module and Lunar Module spacecraft architecture. The CSM would stay in orbit around the Moon, so that the fuel needed to get home and the heavy components required to survive Earth re-entry would not have to descend to the Moon just to be lifted again. The Lunar Module could then be designed to be extraordinarily light.

Some systems and aspects were shared between the craft: they both used identical Apollo Guidance Computer hardware and shared some of the software, for example, and both burned the same flavors of hypergolic propellants for propulsion. But major differences existed as well: the CSM was powered largely from chemical fuel cells, for example, while the LM, which wasn't expected to be online for nearly as long, relied exclusively on batteries.

On the left, you'll find a simplified depiction of the Lunar-orbit rendezvous mission profile Apollo settled on. And below, we will describe briefly each component of the Saturn V launch vehicle and Apollo spacecraft.

Command/Sevice Module

{{figure:arch-csm}}

Most of the trip was spent in the Command Module and relied on the mated Service Module for propulsion and consumables. This included the fuel cells that reacted Hydrogen and Oxygen to produce both electricity and drinking water, the cooling systems for the spacesuits and heat-generating electrical components, the Service Propulsion System hypergolic engine and propellant, and many small miscellenea. The two were mated before launch, and a ~46cm (18in) wide umbilical sent power, instrumentation signalling, and fluids between the two. A temporary umbilical was run via the interior shared tunnel to the Lunar Module after docking to supply it with power.

The Command Module is often abbreviated to CM, the Service Module to SM, and the two together when mated were referred to as the CSM.

Lunar Module

{{figure:arch-lm}}

As depicted in the film, one of the astronauts' first tasks once they were on the way to the Moon was something called Transposition, Docking, and Extraction. This involved separating the CSM from the top of the stack, slowly moving it away, turning around, and docking with the Lunar Module. The combined stack would then be freed from the S-IVB booster stage. This process could take upwards of an hour. The LM would then be powered and pressurized.

The Lunar Module was built to be exceedingly light: its walls are famously thin, roughly 0.3mm (0.012in). It also had two propulsion systems, the heavier Descent Propulsion System (DPS) and the lighter Ascent Propulsion System (APS), so that the more powerful engine and the bulky landing gear could be left behind when leaving the Moon, along with heavy batteries and oxygen tanks for use during landing and the stay on the Moon. It was so small and compact that part of the APS engine assembly protruded into the cabin, and astronauts would often use it as a seat. The DPS was particularly unique in that it could be throttled, something none of the other engines on-board could do.

The Lunar Module was not meant for extended habitation, particularly in isolation from the CSM. It had limited supply of consumables like oxygen and water on board, and relied exclusively on batteries for power. Normally, the consumables would be used only during the Lunar phase of the mission, and the electricity would be replenished from the CSM fuel cells. These limitations would become some of the most important factors in planning for the survival of Apollo 13.

S-IVB

{{figure:arch-sivb}}

The S-IVB (pronounced "S 4 B") stage was the final stage of the Saturn V launch vehicle. It fired for the final stages of initial launch to bring the spacecraft into Earth orbit, and again to send it to the Moon, a maneuver known as Trans-Lunar Injection (TLI). In addition to its main hydrolox-powered J-2 engine, it also had small maneuvering thrusters on-board for attitude adjustments and ullage. Starting with Apollo 13, the S-IVB was directed to impact the surface of the Moon once separated from the Apollo spacecraft, as Apollo 12 had left seismic sensors on the lunar surface for scientific measurement.

The S-IVB also carried the Instument Unit (IU), the critical navigation, control, and communications system for the entire Saturn V launch vehicle. It also performed functions like providing its own cooling and detecting emergency scenarios.

In what would become a fateful design decision, the S-IVB IU communicated with ground stations on a similar frequency band as the Lunar Module. Normally, this wouldn't be a problem, as by the time the LM was fully operational and needed communications, the S-IVB would have been disabled or would have impacted the Moon already. But on 13 the sudden need for the LM at an early stage would cause significant problems in the first hours of the accident.

S-IC / S-II

{{figure:arch-lv}}

The remaining two Saturn V stages were increasingly large boost stages. The S-II second stage was powered by the same J-2 engine as the S-IVB third stage, but had five of them. The S-IC stage had five of the immense F-1 engines which are to this day the largest engines ever flown.

Where the S-IVB burned hydrogen and oxygen, the first two stages burned the same kerosene/liquid oxygen propellant combination that still powers launch vehicles today, like the SpaceX Falcon 9 and the still-flying Soyuz rockets. This difference in propellant chemistry between the stages was driven by the different needs in different stages of flight: broadly speaking, early in launch thrust-to-weight ratio is more important, while combustion and thrust efficiency becomes more important for the upper stages.

They're quite big.

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