Spacelog Apollo 13

Aquarius, Houston.

Go ahead.

Okay. Here's the big story. Your attitude really looks quite good except in roll, and we'd like you to do the following. In MIN impulse PGNS, we'd like you to trim to zero pitch, which is about where you are now; to 008 degrees in roll, which is about 16 degrees from your present roll attitude; and to zero degrees in yaw, which is about where you are now. Then we'd like you to do the body-axis aline 400 plus 5, 400 plus 0. PITCH and ROLL to PULSE, select AGS, do the burn in AGS. How does that sound? Over.

Okay. I'm rolled the wrong way; that is what you're saying, right?

That's right.

And you know I can't roll in minimum impulse. I've got to use TTCAs.

That's right, Jim. Sorry.

And you don't want me to automatically trim 5018, I take it.

That's affirm, Jim. Don't trim 5018.

Okay.

We just want you to cycle on through P41 to get the average g and burn it out.

Okay.

Aquarius, Houston.

Go ahead.

Just for your information, we see 3.0 in register 1. We read you up 3.1 on the pad. The actual DELTA-V was 3.05, and they warned me that it might come out 3.0.

Okay. That's a little burn.

Right.

Aquarius, Houston. Your attitude looks real good. We will give you a mark at 10 minutes to the burn, which is in 28 seconds.

Okay. We'll burn it in AGS and use the AGS ball.

Right. I was looking at the wrong clock, and we're a little under 10 minutes now. I'll give you a mark at 9 minutes. Okay?

That's fine.

Aquarius, Houston. We have 10 seconds until 9 minutes to the burn. 3, 2, 1 -

MARK.

Nine minutes.

Very well. That agrees with our event timer.

Okay, Houston. About 3 minutes to go, and we're all squared away.

And, Aquarius; Houston. Roger that. And we're standing by for your body-axis aline and your zeroing 404, 405, 406, going to 470.

Okay. You'd asked—you'd asked me before, Joe, to go 400 plus 3, which I did. I assume you've changed the script again.

Okay, Fred. We did tell you to do that awhile ago, and it doesn't matter; you're looking good.

Okay.

Yes. It looks like we had a minus 0.2 bias at 470. We're burning.

Copy that, Fred.

Good show, Aquarius.

We're tweaking now, Joe.

Roger. Aquarius, Houston. You're good right where you are.

Okay. That's it.

Okay. If you're happy, can we maneuver to service module SEP attitude now?

That's affirmative, Aquarius.

And I'm pitching up to the proper attitude.

Okay. We're looking at it.

And it's again necessary to use the TTCA to pitch.

Roger. Again for fuel-consumption reasons, we'd like you to go back to the AGS mode you were in rather than PGNS ATT HOLD. Over.

Okay. I'm in PGNS MINIMUM IMPULSE right now while we're firing. And I'll go back to the AGS mode.

Okay, Jim. PGNS MIN IMPULSE is okay; AGS is okay too. It's your choice.

Soon as we get rid of the service module, Joe, I think I'll be able to maneuver a lot better.

Sure thing.

Okay, Jack just reported that all thrusters fired on both rings.

Real fine. Real fine.

And SM JETT at 138:12.

Roger. Understand; that's SM JETT, 138:12. It's not that time critical, Jim.

Can we do it at any time, Joe?

I think so, but let me check. Aquarius, Houston. That's affirmative. You can jettison the service module when you are ready; no big rush, but any time.

Okay. Sounds good.

Aquarius, Houston.

Go ahead.

Roger. We recommend that you use the AGS for the separation maneuver, because we'd like to get the proper weight in for the DAP before we use the PGNS again.

Roger. We will. Stand by.

Copy that.

Yes, it looks like it got to the SPS bell, too, Houston.

Think it zinged the SPS engine bell, huh?

That's the way it looks; unless that's just a dark brown streak. It's really a mess.

Okay, Jim. We'd like you to get some pictures, but we want you to conserve RCS. Don't make unnecessary maneuvers.

And, Jim; Houston. In particular, of course, we don't want any translation maneuvers.

Right on that. Joe, you realize that when I went up to the SM SEP attitude, I had to use TTCA to do it.

That's affirm. We know that. That's okay.

All right. She's drifting right down in front of our windows now, Houston.

Okay.

Okay, Joe, I'm now looking down the SPS bell, and it looks—looks okay on the inside; maybe it is just a streak.

Okay. Copy that, Fred. Was the bell deformed on the outside or just nicked or what?

I think the explosion, from what I could see, Joe, had—had stained it. I don't know whether it did any actual deformation or not.

Okay.

Man, that's unbelievable!

And, Joe, looks like a lot of—a lot of debris is just hanging out the side near the S-band antenna.