Jack Swigert (CMP)

Well, if I—If I get everything done, I'll try, but I tell you, it's almost impossible to sleep. All of us have that same problem. It's just too cold to sleep.

Jack Lousma (CAPCOM)

Roger. The way we're looking at it, looks like you ought to have a couple 3 hours here before you have to really get with it.

Jack Swigert (CMP)

We'll—we'll take it easy, but I—and we'll try to sleep, but it's just awful cold.

Jack Lousma (CAPCOM)

Present data indicates that your entry angle is minus 6.03 degrees. Your DELTA-V at the midcourse is going to 2.8 feet a second.

Jim Lovell (CDR)

Jack, this is Jim. I understand this is going to be an RCS burn.

Jack Lousma (CAPCOM)

That's affirmative, Jim. It's going to be an RCS burn.

Jack Lousma (CAPCOM)

And we need the SUIT CIRCUIT RELIEF valve back to AUTO. Correction, back to CLOSE.

Jack Swigert (CMP)

Hey, Jack, that's in work. And one thing, comparing Jim's checklist with my own, I find one difference there at EI minus 02:30. His checklist has me changing a—opening a EPS SENSOR SIGNAL circuit breaker right prior to turning off LM power. Is—I'd like to find out which checklist is correct.

Jack Lousma (CAPCOM)

Hey, Jack. The LM checklist is just for information to Jim. It's just to tell him that—that you're changing back to command module power. Your checklist is correct. Over.

Jack Swigert (CMP)

Okay. And when do you figure that you'll be sending up the pads that you have?

Jack Lousma (CAPCOM)

Aquarius, all of your pads will be coming up in about 3-1/2 hours, at EI minus 06:30. And one thing we want to remind you of, when you remove power from the command module LM umbilical, is to be sure that you open the LM POWER MAIN B circuit breakers, both of them, before you start throwing switches and circuit breakers in the LM. Do it as we've outlined it in the procedure, in that order. Over.

Fred Haise (LMP)

Okay. That's the way we planned on it. We'll let Jack do his three and then he'll tell us when we're GO from there. What pages are those changes on?

Jack Lousma (CAPCOM)

Okay, Fred. The one I've got for you is at the end of power removal from the command module LM umbilical. And just for your information, after you go through that entire procedure and about the time you're ready to transfer to the command module, at that time, power will be removed from the umbilical, and it's okay to disconnect it. That is, after you've thrown the switches in the LM. Is that clear?

Fred Haise (LMP)

Roger. That's where I've got a remark here to check with you to see if it's all right to proceed.

Jack Lousma (CAPCOM)

Roger. And that would be just after, on panel 16, you opening ASCENT ECA CONTROL breakers.

Fred Haise (LMP)

Which step number is that?

Fred Haise (LMP)

The confusing thing is, Jack, where they told me to wait for MSFN GO before proceeding was that BAT 2 LOW VOLTS OFF/RESET, then ON.

Jack Lousma (CAPCOM)

Okay. That's still affirmative. We'll give you a go after waiting 5 seconds, and then down from there just a few steps, after you have opened the ASCENT ECA CONTROL breakers on panel 16, at that point, the umbilical is not powered, and it's okay to disconnect them should you care to do so.

Fred Haise (LMP)

Okay. After the last step then, I'm free to disconnect.

Jack Lousma (CAPCOM)

Right. And one other change we have is, shortly after that, where we're configuring for jettison, we have closed both the FORWARD DUMP valve and the OVERHEAD DUMP valve. And we don't want to get in a locked up position like that, so one way to get around it is to—After we close the FORWARD DUMP valve, turn the DESCENT OXYGEN valve off. Over.

Fred Haise (LMP)

Okay. After the FORWARD DUMP valve, add a step in that says the DESCENT OX valve, off.

Jack Lousma (CAPCOM)

Okay, Fred. That concludes the DELTAs. And perhaps you heard that our GAMMAs are still minus 6.03 and our DELTA-V will be a 2.8-foot-per-second RCS burn.

Jack Lousma (CAPCOM)

Fred-o, we've got one more change we'd like to give you to clarify a question that Jack asked earlier. At EI minus 02:30 —

Fred Haise (LMP)

Okay. Hold on a minute, Jack. I meant to call Jack back down. I'm not familiar with the previous discussion.

Jack Lousma (CAPCOM)

Negative. This is on your checklist.

Jack Lousma (CAPCOM)

At E mi—EI minus 02:30, during power removal from the umbilical, first thing we do is two steps with the CSM. We open the MAIN B, the LM POWER to MAIN B circuit breakers, and then there's a third step which says “Circuit breaker EPS SENSOR SIGNAL, MAIN B, open.” Just delete that step. Over.

Fred Haise (LMP)

Okay. Delete the third step.

Jack Lousma (CAPCOM)

And, Aquarius, for your information, as far as our water supply is concerned, including our plans for powerup, we have an additional 18 hours of water remaining from this point.

Fred Haise (LMP)

Okay. Eighteen hours of water remaining from this point, Jack.

Jim Lovell (CDR)

Hello, Houston; Aquarius.

Jack Lousma (CAPCOM)

Hello, Aquarius. Go ahead.

Jim Lovell (CDR)

Okay, Jack. This is Jim. I just want to make sure that you're filtering the changes to the checklist that come up to make sure that they're absolutely essential. When we learn our procedures, we can only do it one time, and we can't make changes at the last minute. We'd like to do the best, the safest way possible, but unless the changes are really essential, don't bother sending them up.

Jack Lousma (CAPCOM)

Roger. We won't. The chairman of the CPCB is still active, and one thing we're trying to do is to save you all the time we can between EI minus 02:30 and 1 hour.

Jim Lovell (CDR)

That's affirm. That's a real important time.

Deke Slayton

Yes. For your information, Jim, I don't know whether you heard that originally, but that time from 2-1/2 to 1 in there has been run about three times, and it's pretty tight, so we've tried to weed out what we could, which isn't much, but I think the other message you might impress on Jack when you get around to alining that platform, don't try to get it down too neat. It doesn't have to be all that good. Just do a nice quick and dirty one, and that's going to be good enough anyway.

Jim Lovell (CDR)

I concur. I think for reentry we don't have to have a real accurate platform, but I haven't told Jack that.

Deke Slayton

Roger. Hey, Jim, while you're up and things are nice and quiet, let me give you a couple of other things to think about. One specifically. I know none of you are sleeping worth a damn because it's so cold, and you might want to dig out the medical kit there around 01:35 or in that ballpark, and pull out a couple of Dexedrines apiece and try one about then, and another around 01:39 to 01:40.

Jim Lovell (CDR)

Well, I hadn't brought that up. We might—We might consider it.

Deke Slayton

Wish we could figure a way to get a hot cup of coffee up to you. It'd probably taste pretty good about now, wouldn't it?

Jim Lovell (CDR)

Yes, it sure would. You don't realize how cold this thing becomes when it's in a PTC mode that's slowing down, and I just clocked the cycles on my … And it's about 11 to 12 minutes now, and the Sun is directly overhead, so it's shining on the engine bell of the service module and not getting down to the spacecraft at all.

Deke Slayton

Hang in there. It won't be long now.

Jim Lovell (CDR)

Yes. That's right. As a matter of fact, doing this alinement on the Earth this time will be like making a landing with a fogged-up windshield.

Jack Lousma (CAPCOM)

Okay, Skipper. We figured out a way for you to keep warm. We decided to start powering you up now, and what we want you to do—what we want you to do is take your entry LM PREP checklist and start at the top where it says “BAT 5 NORMAL FEED on,” and then jump over as it says to your 30-minute activation, and do all of the 30-minute activation up to, but not including, the burn. You copy?

Jim Lovell (CDR)

Okay. If I understand you correctly, then that gives me leeway to maneuver when we get up to activation complete, and we can be in position for the burn, but we will not burn. We don't have a pad anyway.

Jack Lousma (CAPCOM)

That's affirm, Jim. You could maneuver to burn attitude, or you could maneuver to an attitude which should put the Sun in the windows to warm the place up.

Jim Lovell (CDR)

Sounds good, and you're sure we have plenty of electrical power to do this?

Jack Lousma (CAPCOM)

That's affirmative. We've got plenty of power to do it. I can get you a number, though.

Flight

Jim, you've got about 100-percent margins on everything from here on in.

Jim Lovell (CDR)

That sounds encouraging.

Flight

Roger. That's in the LM. We're not talking about the CSM right now.

Fred Haise (LMP)

Okay. Question. This short turnon step 3 on page 24 has us only turning on the RCS SYSTEM A/B, two quads, and the breakers are still out on panel 11. Did you want those in, too, or are we just going to use one set of heaters?

Jack Lousma (CAPCOM)

Aquarius, Houston. Go as the checklist recommends for now. When you get into the circuit breaker panel configuration, you're going to get the number 1 set of heaters on anyway.

Fred Haise (LMP)

Okay, Houston. We'd like to get a hack to set our mission timer here, Jack.

Jack Lousma (CAPCOM)

Okay, Fred-o. Set it at 133:35 straight up. You've got about 30 seconds to set it.

Jack Lousma (CAPCOM)

Okay. I'll give you the 2-second delay in there. Stand by to start.

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Spoken on April 17, 1970, 8:34 a.m. UTC (51 years, 7 months ago). Link to this transcript range is: Tweet

Jack Lousma (CAPCOM)

Aquarius, Houston. One other way to warm things up in a hurry in there is when you get your AC on to turn on the window heaters.

Fred Haise (LMP)

Okay. I guess the only question I have is what it's liable to do to us with the—looks like almost a frost on it now.

Fred Haise (LMP)

Understand this, Jack. I'd like to let it maybe warm up just a little bit more before hitting it with the heat load.

Fred Haise (LMP)

And, as you can see, Houston, at turnon we got our old friend downlink 2 back.

Jack Lousma (CAPCOM)

Roger. We're seeing it, Fred.

Jack Lousma (CAPCOM)

Aquarius, Houston. It looks like you're proceeding toward the gimbal lock there. We'd like you to check that, please.

Jim Lovell (CDR)

Roger. Not much we can do about it. We can't use the thrusters, Houston.

Jack Lousma (CAPCOM)

Okay. Forget it now; we'll get it later.

Fred Haise (LMP)

And, Houston, Aquarius. I guess the next thing for the PGNS will be a coarse aline 000, but I guess we ought to hold up now until we get enough time on the RCS thrusters.

Jack Lousma (CAPCOM)

Roger. We're looking at them. We'll give you the GO on them. Okay, Aquarius. Your quads are 120 to 133 now, so you're cleared for—Cleared for thrusters.

Jack Lousma (CAPCOM)

Roger. Did you get my GO for RCS?

Jim Lovell (CDR)

That's affirm. We're GO. What we're doing now, Jack, is letting the spacecraft drift in this mode to pick up the Earth again.

Jim Lovell (CDR)

I don't want to just go blasting around the sky and get high rates, because I don't have anything to null the rates on until the Earth comes back up again. And—Once I get the Earth in sight, we have no strain on nulling rates. That part of the Earth, that is.

Jim Lovell (CDR)

It's going to be interesting today, Jack. The Earth's a lot bigger; the crescent is a lot more pronounced than it was yesterday.

Jack Lousma (CAPCOM)

Well, you're going in the right direction.

Fred Haise (LMP)

And, Jack, I guess we haven't changed our angle much with respect to the Sun 93 million miles away, so it ought to be in about the same place in the AOT, isn't that Charlie?

Jack Lousma (CAPCOM)

Hold 1 on that, Fred. I'll get an answer for you.

Jack Lousma (CAPCOM)

Aquarius, your ASA is warmed up now. You can activate the AGS.

Jack Lousma (CAPCOM)

Aquarius, Houston. When you look out a detent 2 in the proper burn attitude, what you ought to see is the Sun at 12 o'clock, about halfway between the top of the AOT and the center of the pipper. And you ought to see the Earth —