Spacelog Apollo 13

Okay, Jack. We're going to get a time on a revolution here, and maybe that'll help you out.

Right. And, for your information, the tank went at 1937.

That's two thousand—1937?

Right.

Okay, Jack. The Earth went through again at 18 degrees on the LPD.

Okay. Earth at 18. Thank you.

Okay. And we didn't see the Moon that time.

Okay, Jack. The Moon went through that time at 32 degrees on the LPD.

Okay, Jack. Well, we didn't get the Earth that time. The Moon came back through at about 10 degrees, and now we're getting to the Earth again. Stand by.

Okay. The Earth came through the LPD at 62 degrees that time. And the total time for the two revolutions,—I missed the Earth revolution before, but the total time for the Earth's two revolutions was 3 minutes and 50 seconds.

Say again the time and the—and also the LPD number. You're in the background noise, Jack.

Okay. Okay, Jack. LPD that time was 62 degrees and that was for two revolutions, being at that distance we missed the Earth—The time before we didn't see it. And the time was 3 minutes and 50 seconds.

Okay. Three minutes and 50 seconds. Is that rate uncomfortable for you?

Jack, Jim said it isn't uncomfortable. It's a little annoying as for the OMNI switching, and also he said it's kind of—He said this Earth/Moon relationship's kind of … because he doesn't know when to …

Okay, Jack. We've got a MASTER ALARM and we've got a battery light flickering.

Okay. Copy a battery light. What battery?

Aquarius, how about cycling the power temp monitor to find out which battery it is, please.

Yes. That's in work, Joe.

Okay. It's that same old …

Okay, Fred. I can hear you now, Say again, please.

Okay. It's the same old—same old one. The only light I'm getting is on BAT 2.

Okay, Fred. We copy your same old friend, battery 2. Could you give us high bit rate for a while, please?

Aquarius, Houston. High bit rate, please.

How you getting it now, Jack?

Okay, Aquarius. You can go low bit rate, POWER AMP, OFF and DOWN VOICE BACKUP now. Voltages and currents look normal on battery 2; so ignore the battery light.

Okay, Jack. POWER AMP, OFF, back to low bit rate, and I'll go back to sleep.

The battery light staying on?

Yes. We got a steady on BAT 2, BAT FAULT LIGHT and the battery caution light.

Okay. And the Skipper in the sack now?

Say again?

Is the Skipper in the sack now?

Aquarius, Houston,

Go ahead, Houston.

Okay. That's a lot better, and we figure your battery glitch was just that thermal switch triggered a mal—a CAUTION and WARNING, just cycled once, and triggered a MASTER ALARM again. We'll watch the batteries for you, since you don't have any CAUTION and WARNING on now.

Okay, Jim. Your luck is holding. Tracking shows that your entry angle has gone up to minus 6.24. This is on the basis of all the data we've collected between the midcourse up to the time the SHe tank went. So we'll continue to look at it, and see if SHe tank did anything to it at all. So it's—The data has gone from 5.9 to a minus 6.24.

How are you doing, Jim?

Not bad. Not bad at all.

Is Jack in the sack, or is he with you?

Jack and Fred both are going to sleep. It's sort of humorous; Fred's sleeping place now is in the tunnel, upside down with his head resting on the ascent engine. Jack is on the floor of the LM, with a restraint … wrapped around his arm to keep him down there.

You say Jack is on the floor, and Fred is with his head on the ascent engine.

Okay, Skipper. Your luck is really hanging in there. Your water's good up to 161 hours now.

Hey, that sounds great.

That doesn't include PLSS water or command module water.

Okay. Jack, I'd just like to know what—what plans or thoughts being contemplated for the PLSSs or the OPS, whether we're going to use their LiOH canisters or take the devices back in the command module with us, or just what will be your plans.

Yes. We're talking all that over now. We haven't decided.

Everything's running real smooth over in Timber Cove, Jim.

Sounds pretty good. How about at El Lago?

Same. Everything's smooth there, too.

Jim, we've had a lot of people working on the entry procedures, and they'll be continuing to do so. We got a few ideas we'd like to toss at you so you can start thinking about them if you think you're in a position to discuss them without waking up the other guys. What do you think?

Yes, go ahead. It's okay.

Okay. A suited entry would sort of … the 1-hour LM jettison back and … back and forth up to that time. … impede our progress back and forth. …

We're losing you, Jim

Okay. I think I've got you back. I guess the midcourse at 5 hours prior to …

Affirmative, Jim. Midcourse 5 hours prior to entry interface.

If that's the case, all I'm worried about is having that all squared away. It's long before that … I want everything in its place. All the stowage cleared away, all the … ready to go and know exactly what to do and … so that we can do the midcourse, and … get into the command module … jettison the service module, and then know exactly how to get into the LM.

Roger. All those procedures will work—will be worked out precisely, and we agree that the stowage and all of those peripheral details ought to be taken care of before midcourse.

And, I guess, that last midcourse, we'd want to start looking at midcourse fairly early, if we have the power to do so, mainly because of attitude control. This last time was fairly easy, but I'm not too sure how long we can continue to …

I have … in, and it seems about as cold as it is now, we'll probably be going into suits long before entry.

Yes. That's what we were thinking.

I guess the two things which are somewhat unresolved at the moment are what to do with the OPS and what to do about the suited entry. We thought we'd toss those at you to see what you thought about them.

Okay. As far as the OPS is concerned, we have enough oxygen in the spacecraft … to get us through. I have no … command module … suit loop prior to entry. I was looking at … OPS … sources of oxygen … also in the—in the front of the suit loop or … circulate …

Jim, I'm sorry. We're not catching what you're saying. The COMM is getting kind of bad right now.

Okay, Jack. How do you read now?

I've still got you with quite a bit of background noise, but if you talk up like that, I think we can hear you.

Okay. My only concern about leaving the OPS and/or the PLSS in the command module is how soon do we have to live off the command module consumables prior to entry, and the PLSS has a fan and has a lithium hydroxide … use the command module system. Also, the OPS … right now … command module … command module oxygen and electrical power is … but I had just as soon be … back in the LM.

It sounds like the general gist of your comments are that if things remain pretty much as they are now in the command module, you'd just as soon leave the OPS in the LM. Is that affirm?

That's affirm.

Okay. And maybe you'd like to think over the suited entry bit a little while.

Okay.

Houston, Aquarius.

Go ahead.

Okay … How we aline the command module right for entry, especially if you have the LM in back. Over.

Roger. That's one subject that's been getting a lot of attention, and let me see if I can get some general ideas on that at the moment.

Jim, I can give you the general idea of the proposed procedure for bringing the command module G&N up. It's the presently proposed one. We may come up with a better one, but here's what we're looking at right now. First thing we plan to do is to—using the LM COAS, sight on the Earth with the LM just as we did in the midcourse. Then we'll do a body-axis aline, 400 plus 5 on the ACS, to put the AGS ball at 000. And then we can give you an AGS ball attitude to fly to, to point the CSM optics at the Moon. And, if you can see stars, why, we can use those too. Then we can give you an equivalent set of CDU angles to put into NOUN 20 and to torque the platform over. So, now we're coarse alined. Then we do a fine aline by shooting at the Moon and then at the Sun. Do you follow all that?

Okay, Jack. Let me see if I have it. What we do is point the LM at the Earth as we did for the midcourse COAS, and we do a body-axis aline on the AGS. Then you give us an AGS ball attitude to fly to. … the LM, and then we … point the … at the Moon. Then you would update the—give us some CDUs to coarse aline. … fine aline … on stars or the Moon or the Earth. Stand by. Okay. We had another MASTER ALARM, Jack. I don't see any lights down there, except the battery light's still there. You want — … display ECS. Okay. And the number 2 battery still has a light on it. I suspect it may be the same problem that we had before … …