Spacelog Apollo 13

Yes, yaw's coming back in.

Just about it.

Okay. Yaw is in …

What have you got?

… upper right corner of the Sun.

We've got it.

You're hot …

Houston, Aquarius.

Go ahead, Aquarius.

Okay. It looks like the Sun check passes.

We understand it checks out. We're kind of glad to hear that.

It's not quite centered, but it's about a diameter, a little bit less than a diameter, just to one side.

Sounds good.

Now. Let's get the AOT lamp on.

Okay, Jim.

Which … to get the AOT lamp on?

Okay. Pull the—your AOT lamp breaker.

Got it.

Okay. And, Houston, can we proceed with our powerdown now? Getting the ball back off and AOT lamp, et cetera, AC secured.

Stand by on that one for a minute, Fred.

— the ball … get back to—Okay. What we'd like now, I guess, is the next attitude to go to, Vance, and we will work on getting there while we still have the ball.

Roger. We copy.

…

Okay. Seventy-four hours.

Yes. We're not there yet, really. I've got 11 minutes to check … out.

Yes. Bring your … down.

Get set. Keep … It's better in here. Slow now …

Apollo 13, Houston.

Go ahead.

Jim, in a moment we will have an attitude for you to go to, and recommend that you keep your FDAI up while maneuvering to that attitude. After you get there, then we will have you widen the deadband and eventually go into a PTC about the burn attitude.

You were cut off slightly, Vance.

Roger. We will have an attitude for you to maneuver to in a moment. And you should leave your FDAI up for that. The attitude is as follows if you are ready to copy. Over.

Got the book.

Go ahead, Vance.

Okay. This is FDAI attitudes for the maneuver. Yaw 060 degrees, pitch 083 degrees, roll 272 degrees.

Let's not read that in the R₁, R₂. I don't want VERB 69 twice. I want VERB 49, 58g's so I can fly the needle.

Jim. Those are not VERB 49 angles. Those are strictly FDAI attitudes. Over.

Okay. I understand, Vance. It's much easier if the ball is up to fly the needles; that gives me a drift of VERB 49, 58g maneuver. We could fly that manually.

Stand by. We'll try to get you a VERB 49 angle.

Flying on maneuvers.

…

On that last check, what did it look like?

… … …

This is the first three-man LM we've had.

Apollo 13, Houston.

And, Vance, which—What hack you got now on GET?

Okay. Stand by on that, Fred. First, let me read up your VERB 49 attitude, if you are ready to copy.

Go ahead.

Okay. Yaw 27100, pitch 35500, roll 33000. Over.

That's negative, Vance. What is your clock reading right now?

Okay. When I give you a hack, it will be 73:59, and that's about 40 seconds away.

Okay. I think we will make one last check there with the half-unit vectors for 74 hours before we leave this attitude.

Okay. And I'm going to calculate in the 2 seconds in giving you the time hack coming up on 73:59:00 when I give the mark. Okay. Stand by.

MARK.

Looked good.

Okay. I understand you got it.

You want me to PROCEED one more time on that, Jack?

Roger. Yes, go ahead.

Oh, it's on; it's a center.

That's it, she's right on still. Okay. I have, too. That's better than I expected.

Okay. Let's do a VERB 74 and get out of here.

If we can. Go to P00? Okay. I'm going to go to -

…

737100. Roger. 35500, plus 33000. …

Okay. That's —

Yaw, pitch, and roll.

Let me see. No, that's yaw, pitch, and—Okay. Everything's … … That's roll, pitch, and yaw.

Roll, pitch, and yaw.

Everything … yaw.

The roll's going to be down here, but the yaw will be off the bellyband. … procedure, or don't you have a procedure?

Roll, pitch, and yaw, but drift's the one. That would be gimbal lock if it wasn't for being off …

And, Houston, I see that this maneuver gives us a roll of 27172, a pitch of 08301. Is that what they gave us?

This is Houston. Please repeat.

Houston, did you give us VERB 49 in yaw, pitch, and roll, or register 1, 2, and 3?

We gave it as yaw, pitch, and roll.

Okay. We wrote it as roll, pitch, and yaw.

Okay, Jim. We read it to you as yaw, pitch, and roll, and we should have given it to you registers 1, 2, and 3; but we did not. So register 1 is 33000, register 2 is 35500, and register 3 is 27100.

Okay, Vance. Register 1 will be 33000, register 2 35500, register 3 27100.

Hey, Fred? Stand by on that.

Okay. Plus 27100. Okay. Stand by. Right now you can enter …

Okay. Apollo 13, Houston.

Go ahead.

Okay, Jim. We sorted it out, and it is correct the way we gave you the first time. So, R₁ 27100, and in the LM, that's yaw; R₂ 35500, and that's pitch; R₃ 33000, and that's roll in the LM. Over.

I agree with you. Okay. 5018, it's there, and 5018, and that's what it will be. Okay.

That's right. That's VERB 49.

There are 25. 25, ENTER.

Okay. Plus 27100, plus 35500, plus 33000.

Okay.

So far we're … what can we do about it?

Apollo 13, Houston. You better watch that middle gimbal. Over.

Roger. We're watching that middle gimbal. We have as a roll, 27172. Our yaw is—that's register 3—3300. How did we get this?

And, Apollo 13. We have a procedure for you describing how to widen the deadband to 5 degrees later on. But stand by for that.

Apollo 13, you're heading for gimbal lock. You better stop everything.

Yes, we're back in ATT HOLD now. We're trying to stop it.

Roger.