Spacelog Apollo 13

How you doing, Jack?

Do you have an hour on your clock for …

Joe, this is Aquarius; wonder if you can give me the GET time of initial powerup?

Fred, Houston. Understand you'd like to know the GET of your initial powerup, is that correct?

Yes, the second time in here.

Okay, stand by.

Aquarius, Houston. Over.

Go ahead.

Okay, we don't have a percise time for the starting of that procedure yet; we are working on it real hard. It won't be for several hours; and we'll pass it up to you just as soon as we get it. Over.

Okay, and, Joe, you want us to start a PTC maneuver at this time?

Stand by and I'll check.

Aquarius, Houston.

Go ahead.

Roger, Jim. We would like the next yaw maneuver in about 6 minutes. Over.

Roger.

Okay.

Oh, yes, yes. Keep opening—open the jets slowly … Keep working at it.

Is there some way that we could … water in the PLSS.

Aquarius, Houston. Over.

Go ahead.

Okay. Our estimate is that we will start powering up for the DPS burn at about 76 hours elapsed, which is about 6-3/4 hours from now.

Roger, Joe. Understand.

Okay, Joe, about 76 hours or so and I guess you misunderstood. My question was what was the GET way back when, when I first came across to the LM and transferred to LM power? How long have we been living on the LM, now?

Aquarius, Houston. Over.

Go ahead, Houston.

Okay, the time of transfer to LM power was 57 hours, 11 minutes. For your information, we seem to be reasonably fat on power. In fact, we are looking at a procedure that we might recommend to you later on after the burn and so forth of powering up one of the command module main buses via the LM umbilical. This would enable us possibly to charge up the command module batteries. Over.

Okay, Joe. That sounds great. I just thought that to pass the time, I'd do a little backseat quarterbacking, here.

Aquarius, Houston. Over.

Go ahead, Houston.

Roger. We request AFT OMNI at this time. Over.

AFT OMNI.

That's affirm.

Yes. … is going to be 123.

You mean you're … 12247?

…

Yes.

I'm trying to … this heater over here.

Yes. I'll … that.

Jim, that spacecraft's looking pretty close; a about 86 or …

Well, …

Aquarius, Houston. Over.

Go ahead, Houston.

Okay, Fred. I have a few words for you on some things we want to do in the next few hours, and in order to get good COMM for that and also in order to give FIDO a few minutes of ranging, I want to have you put the POWER AMPLIFIER circuit breaker in panel 16 in, the VOICE FUNCTION switch to VOICE, and RANGING FUNCTION switch to RANGING. Over.

Now I'm in NORMAL voice and RANGING is up.

Okay, Fred. And you're loud and clear down here now. Okay. What we're getting a procedure ready for you is to do an AOT Sun check at approximately 74 hours or in just a little over 3 hours. That will be a detent 2; we'll have a detail procedure up shortly and it will include a rendezvous radar redesignation to get it out of the way and a P52 maneuver to the attitude. It's our feeling that if that checks out within 1 degree that your platform will be okay for the burn without a subsequent P52. If it's not within 1 degree, we are working up an Earth/Sun alinement procedure to aline the platform, and we'll have that up to you later. Okay. Assuming that the Sun check is okay, we will then give you a star for a confidence check on the back side when you're in the darkness. We'll be updating a burn pad to you prior to LOS going around the Moon. We'll have another look at you after AOS, and we'll update the pad if required. Right now that update should be very small. Over.

Okay. Stand by 1.

Okay. Joe. As I read that, at 74 hours we're going to do an AOT Sun check at detent 2, which is going to require the rendezvous radar out of the way. And we use P52 AUTO maneuver to get there, or at least the angles out of that, and if this passes within 1 degree, you're saying the platform is okay for the maneuver, and we won't need a subsequent P52. But even if it is okay, you'll give us a star which we can use for our check when we're in darkness. If this check flunks, you'll pass us on up then an Earth/Moon aline procedure.

Okay, Fred. That's correct, except the aline procedure that we're working on is an Earth/Sun aline, and other than that, that's correct. Incidentally, this TC plus 2 maneuver looks like it will still be around a 900-foot-per-second maneuver and that it will get you back to the mid-Pacific line at 142 hours.

Okay. That was an Earth/Sun check, John. We're getting a little close to the Moon now. And the TC plus 2 maneuver still looks about 900 foot per second to get us at mid-PAC, at about 142 hours.

Aquarius, Houston.

Go ahead, Joe.

Okay, Fred. We got a good batch of ranging and now we'd like you to reverse the configuration, RANGING to OFF, VOICE FUNCTION to DOWN VOICE BACKUP, POWER AMPLIFIER circuit breaker out; we'll be talking to you.

DOWN VOICE BACKUP with the POWER AMP breaker open now. How do you read?

We read you satisfactorily, Fred.

Okay.

Jim and Jack are in the upstairs bedroom taking a nap now.

I didn't know that was upstairs.

We have the first space station.

And, Houston, Aquarius.

Aquarius, Houston. Go ahead.

One other thing you might have somebody look at—I don't want to bother the guys upstairs—the drain hose that we've got in the command module, I wonder if we can find out if it will plug into the PLSS and in which case we can keep transferring—later on at least—the command module water into the LM via the PLSS.

Okay, Fred. You're almost up with us. We are looking real hard at getting water from the command module waste tank into the PLSS, using that hose and then dumping it from the PLSS into the LM ascent tank, and we think it is feasible; we're checking it out to make sure.