Spacelog Apollo 13

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 to perhaps look for stars.

Roger.

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 system.

Roger. We gave you a GO on that earlier. Sorry, you must have missed it. Use the side hatch for urine dump.

Okay.

And, how are the stars out the window now?

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 still got particles floating around us; I'll have to take a long look and see if I can see any star patterns.

Roger. 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?

Okay. Stand by 1.

Okay. I understand you want us to turn off the S-band transmitter/receiver and bring it up in 5 minutes. Is that correct?

That's affirmative.

Tell us when.

And you want us to maintain attitude control.

Affirmative on the attitude control.

That's auto attitude control. Okay. You maintain auto attitude control.

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 amps are off for 5 minutes. Is that—when you give me the word—is that what you want?

Aquarius, leave the power amplifier the way it is. Turn the transmitter/receiver off for 5 minutes. Now.

Okay. You tell me—you tell me when.

Okay. Turn it off now. See you in 5 minutes.

Aquarius, Houston. How do you read?

Okay. You're loud and clear there, Jack.

Roger. Same here. We're—We're still discussing the next move.

I figured it. Let's just make it a good one.

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?

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.

Okay. For attitude control coordinates, we're recommending manual control VERB 76 and watch your middle gimbal angle. Your DAP load that you have now looks good.

Aquarius, our decision for the 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.

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.

Roger.

And, Aquarius, for your information, we now have 136-mile perigee. Confirmed by Doppler.

Okay. 136-mile perigee now. That's very nice.

Oh, wait a minute, Jack. Did you say pericynthion or perigee?

I meant pericynthion.

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.

Aquarius, AFT OMNI, please.

Houston, do you read Apollo 13?

This is Houston. Go ahead. Reading you weakly.

Okay, Jack. We don't want to bug you, but you ought to be thinking—or what your thoughts are concerning what the next burn will be. I got to figure out a watch schedule and the sleep schedule and just how we can meet the next maneuver.

Roger. We're getting you a flight plan update. We're still computing on your next burn, and we're getting ready to give you a procedure for powerdown.

Aquarius, one idea on managing the OMNI antennas. It might make it easier on everybody if we disabled the UPLINK SQUELCH and managed the antennas by switching when we hear the noise. Over.

Okay, Aquarius. Here's what we're going to do. We'd like you to point the LM X-axis either north or south. That's the positive X-axis. It appears to us that it would be closer to orient the LM plus X-axis toward the south. Do that with the LGC powered up using the TTCA. After that, we propose to power down the LGC to save some power. However, this means that we lose the use of the TTCA, and we'll have to control the spacecraft with the hand controller in the DIRECT mode. Request your—your position on these two items.

Ready to copy.

Okay. It's pretty easy. We see you've already got VERB 16 NOUN 20 called up there and so we want you to, in maneuver and PGNS ATTITUDE HOLD, use the TTCA. We want you to, on the commander's ball, pitch to 267.5 and yaw to minus 4.5. And when you do this in VERB 16 NOUN 20, on the DSKY, you ought to read plus 00120, plus 26750, and plus 00450. Go ahead.

Okay. We're to drive the commander's ball to a pitch of 267.5, yaw minus 4.5. And we should have in 16 20 at that time, plus 00120, plus 26750, plus 00450.

Houston, Aquarius.

Go ahead, Aquarius.

Roger. You didn't mention roll on the ball. Do you want roll zero?

The roll ought to be plus 1.2, Jim.

Houston, Aquarius.

Go ahead, Jim.

Okay. We're just about there in pitch and in … middle gimbal angle, but that other gimbal angle didn't look like it pulled the right way. I tried both methods.

Yes. I been looking at that, too, and we're asking why, and we'll get an answer for you.

Yes. Houston, I wonder if you're accounting for being a bit off the bellyband here, and I've gone through GASTA.

And, Fred-o, I know you're supposed to start sleeping here pretty soon, but we got a new PC plus 2 pad, P30 maneuver pad for you.

Stand by.

Okay. Go ahead, Jack.

Okay. DPS, pericynthion plus 2 into the MPL, 079, 27, 4013, plus 08144, minus 00443, minus 00226, N/A, plus 00205, 08455, 4 plus 20, 268, 261, plus 08155, minus 00443, minus 021, 2187, N/A. GDA should be okay as is, which hopefully is pitch 5.85, yaw 6.74. Two-jet ullage for 10 seconds, the DPS throttle 10 percent for 5 seconds, 40 percent for 21 seconds, 100 percent for the rest of the burn. And this should put us into the water at 142 plus 47.

Okay, Fred. I have a correction in NOUN 81. DELTA-V_Z is minus 02226. Read back.