Spacelog Apollo 13

Okay, Jack. Have I gotten your 360 on yaw and roll? I'm going to go to ATT HOLD.

Roger. And then we want to get the ball part down.

Okay. Stand by.

Okay. I'm now in PGNS ATT HOLD. And are you reading my DSKY angles?

Roger. We see them.

Now, you want me to power down the ball, and if you'll give me the procedure for that, I'll do it right away.

Okay. We'll buy what you've got on the DSKY there, and we'd just like to go through an overall powerdown procedure, and in so doing we'll catch the ball and inverter and it will only take a few minutes. So are you ready to start on panel 11?

Roger. Jack will copy, and I'll do the work.

Okay. Panel 11, top row, open all the circuit breakers.

All circuit breakers on top row coming open.

They're all open, top row.

Okay. Second row, close the first six on the left through the ISOL VALVE and open all to the right of that.

Okay. First six on the left are closed—That's through the ISOL VALVE, but I opened up every one from there on.

Okay. Third row, open up the next five—correction—Open up the first five on the left, close AOT HEATER, close SIG CONDITIONER 1. Close ATTITUDE DIRECT, and open the rest on row three.

Do you want ATCA (PGNS) open?

Leave ATCA (PGNS) closed; four breakers on the third row must be closed. AOT HEATER, SIG CONDITIONER 1, and ATCA (PGNS), ATTITUDE DIRECT CONTROL. Our mistake, good going.

Okay. I'm opening up ENGINE START OVERRIDE right now. And that row's taken care of.

Okay. On the fourth row. Open—From the left, open the first five—correction—Close the first five, and open CABIN FAN 1. Close the three GLYCOL PUMP circuit breakers; open all the COMM breakers, except for COMMANDER'S AUDIO; close it. All the PGNS breakers, open—correction—Open the first three PGNS breakers, close LGC/DSKY, IMU STANDBY, IMU OPERATE.

That's complete, Jack.

Okay. And EPS, close BAT FEED TIES, CROSSTIE BAL LOAD, and open the CROSS TIE BUS. Close the next three; open ASCENT ECA CONTROL, ASCENT ECA, and INVERTER 1. Close DC BUS VOLT. Go ahead.

That's complete, Jack. Panel 11 is configured.

Okay. Let's go over to panel 16, top row, and starting from the left—Open the first four.

Stand by, Jack.

Okay. Starting from the left, open the first four.

Okay. And close the ISOL VALVE, keep your TCA breakers closed, close the CROSSFEED, open the next two displays. Close the MAIN SOV and the PROPULSION breakers should all three be open.

Roger. The main valves are closed, and the DISPLAY ENGINE OVERRIDE LOGIC's coming open, and the PQGS and ASC He REG are open.

That's affirmative. The second row: they should all be open except for three breakers under instrumentation. Close SIG SENSOR, PCM/TE, and SIG CONDITIONER 2. Over.

Roger. Do you want SUIT FLOW CONTROL open?

ENGINE ARM coming open and ASA I guess will be open. Is that correct?

We just got a change on that. Let's keep the ASA closed.

How about SUIT FLOW CONTROL and ENGINE ARM?

Okay, Jim. SUIT FLOW CONTROL can be open, and ENGINE ARM—ENGINE ARM open.

Okay. Let's go to row 3.

Okay. Row 3 under COMM. Open DISPLAYS, close SE AUDIO, open VHF A TRANSMITTER and B RECEIVER, close the PRIMARY S-BAND circuit breakers, both of them. Open the S-BAND ANTENNA, PMP closed, TV open, and all the rest of them open under ECS, except CO₂ SENSOR, closed.

Roger.

Okay. Under row 4: under HEATERS, your RCS QUAD heaters should—four of them—be closed, open DISPLAYS, open S-BAND ANTENNA, open SEQUENCE CAMERA. Under EPS, open DISPLAYS, close DC BUS VOLT, open INVERTER 2, open ASCENT ECA CONTROL and ASCENT ECA, close DESCENT ECA, DESCENT ECA CONTROL, TRANSLUNAR BUS TIE, close CROSS TIE BAL LOADS, open CROSS TIE BUS, close BAT FEED TIES. Over.

Okay. You might think about this. You know we lost our oxygen pressure in the command module.

Aquarius, we're finished with the uplink. The computer is yours, and you can open the UPDATA LINK circuit breaker.

Okay. We've opened up the UPDATA LINK, and we've gone OFF of DATA, and I've got 16 20 in the computer.

Roger, Jim. I guess we're going to just kind of perk away here now.

Okay, Jack. One more question about Odyssey here.

Go ahead, Jack.

Okay. How about the service module O₂ supply valve? Do you want that off?

Affirmative. Service module O₂ supply off, Jack.

Okay. On the way.

And, Jim, we see a PROGRAM ALARM in there. We think it's just got to do with pulling the UPDATA LINK circuit breaker—UPLINK too fast.

Roger. I don't see it. Should I reset?

Houston, Aquarius.

Go ahead, Aquarius.

One thought that might occur here is that if we have low descent water pressure, we might consider taking the PLSS water and fill it in reverse. If that works, you might look at a procedure for that.

That's a good thought. Let us bounce that around a little.

Okay, Jim. That's a good thought, and we've looked at that, and it looks like that's feasible. So if and when we need to do that, we will.

And, something else, Jack. When it's time for me to make my 90-degree yaw, what I planned on doing was going to NOUN 76 hold and just pulse and yaw several times until the yaw start and hope that pitch and roll stay within the limit.

Roger. It sounds like a good plan and you can use your TTCA in MIN IMPULSE to take care of pitch and roll.

Okay.

Aquarius, Houston. We see ASCENT O₂ tank number 2 building up again, so we'd like to use something out of it, so turn on ascent O₂ tank number 2 and turn off descent O₂.

And, Aquarius, Houston. We're starting to think about CO₂ buildup up in the command module there so we've got a recommendation, and what we're recommending is that you take the commander's hoses in the LM and put a cap over the red return hose and then figure out a way to fasten those hoses so they blow up into the CSM by extending them up through the tunnel as far as possible. And we'll get some flow out the blue side, circulate up and around the command module and to keep the CO₂ level down.

Roger. We're thinking of that too, and one problem is that the COMM is connected securely to the hose, so we've got to get the COMM cable off somehow to get that—So we'll still have COMM down here in the LM and you have the hose up there.

Houston, we're trying to extend that commander's hose by use of the vacuum hose.

Sounds like a good plan if you can work that out, Jim.

Aquarius, if you can shake Jack loose there, I've got a—some procedures for him to write down.

Okay. Stand by.

Okay, Jack. Is this a long one?

Oh, it's about 12—15 lines. It's a matter of verifying some valves and so forth.

Okay. Go ahead.

Okay. We want you to go in when you can and verify the following valves and leave them as we outline here. REPRESS PACKAGE valve, off; EMERGENCY CABIN PRESSURE, off; DIRECT O₂, off; DEMAND REG, off; both WATER ACCUMULATORS, off; MAIN REG A and B, open; WATER GLYCOL—correction—WATER and then GLYCOL TANK INLET and OUTLET, both. Now if you want to get some water, we recommend that you momentarily turn the SURGE TANK on to pressurize the system and then turn it off and take out water as required. Over.

That's it, Jack. And another note on taking water; if you don't drain enough water so that —

Say again, Aquarius.

That wasn't us, Jack.

Okay. One more note on the water, Jack. If you don't bleed the pressure off when you—don't take enough water to bleed the pressure off completely, the pressure that's left on there is going to drain away in a period of 1 to 3 hours. So it's a small amount of oxygen, but we might as well save it. So if you want to eliminate that problem you could completely drain the pressure off by putting the water in a water bag and saving it that way.

Okay. That's a good idea.

So that's the end of my —

What I'll do—let me repeat—Okay. Let me repeat it all back to you. REPRESS PACKAGE VALVE, off; EMERGENCY CABIN PRESSURE, off; DIRECT O₂, off; both the DEMAND REGs, off; both H₂O ACCUMULATORS, WATER GLYCOL ACCUMULATORS, off; MAIN REG A and B, open; WATER and GLYCOL TANK INLET and OUTLET, open; for water, momentarily pressurize the SURGE TANK, take out water as required. You're recommending drain out all the water until I can't get any more water out of it in order to conserve the oxygen.

Okay. We just want you to turn off the water accumulators and not the glycol accumulator. Over.

Okay. These are the water accumulators on 382, right?

Houston, Aquarius.

Aquarius, Houston. Go.

Roger, Jack. We're asking whether P51 and a P52 are required in the back side of the Moon.

I think so, Jim, but stand by while I verify it.

Aquarius, Houston.

Go ahead.

We think we know where the platform is, Jim. The tracking looks real good from the last burn. We feel just a P52 will be required.