Spacelog Apollo 13

— Apollo 13 —

Roll, yaw, roll, pitch, and yaw.

Jim, that's negative. We don't have any data on you. Low bit rate.

We don't have high bit rate.

Houston, do you read Aquarius?

Roger. Reading you, Fred. Go ahead.

Go ahead. Houston is reading you.

Houston, Aquarius.

Reading you loud and clear. Go ahead.

Are you monitoring our P52 technique?

That's negative, Jim. We do not have high bit rate data on you now. Over.

Okay. Thank you.

Roger.

And be advised, Vance, that we are getting several echos in our COMM downlink here.

Roger. We'll check into it.

… … and … alinement.

Apollo 13, Houston.

Go ahead, Houston.

Jim, request you give us high bit rate now. We might be able to fix you up on the 120 antenna.

Okay. High bit rate.

Roger.

And, zero, zero, zero.

Yes.

Apollo 13, Houston.

Go ahead.

Fred, we can't lock up on your high bit rate. Request you go back low bit rate.

Hey, we lost you there, Vance.

Roger. Advise, we are not locking up on your high bit rate, so you can go back low bit rate. Over.

Low bit rate.

Right here, Jim. There it is. Looks like it …

I don't have all the confidence in the world in this Earth-Sun P52.

You know how many times I screwed up on my arithmetic.

Yes. Don't count your chickens before they hatch.

Listen, I'm not.

We're … going to be two diameters out, huh?

Yes.

Okay. Tell me what that technique is to get the lamp on, in case I don't see it.

They'll have to give you AC again and you punch in your breaker -Well, let's see—I've still got H_P on for the FDAIs, so you're in business now. All you need is the lamp breaker, the AC BUS A AOT lamp breaker, that is.

Let me know when these start going. There's the Sun. Give me the—Give me the AOT.

Okay.

Never mind. I don't need it. Go ahead. I got it. Never mind.

Reticle brightness, want it up? Got the reticle?

I got the reticle …

… Call it, Jack; you can see it better.

…

Okay.

… …

… we got it a great big one.

Yes. I show it about maybe a third of a diameter to the left.

Okay. Take a look.

Check your needles. You're off in roll, Jim.

Pitch and yaw are in, but we're off in your roll needle. Better get that …

Okay. It brings it in. Say when.

Okay. We got it. I think we got it. What diameter was it?

Yes. It's coming back in. Just a second.

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.

Ask him if you keep it in AUTO maneuver there.

Okay. VERB 49, yaw plus 27100, pitch plus 35500, roll plus 33000. And do you think it's cheaper to manually make that maneuver or take the 0.2-degree range and go in AUTO maneuver?

Fred, we're recommending AUTO maneuver. Over.

Okay. AUTO maneuver, and could you give me a GET right now.

Okay. I understand you want GET of the burn. Stand by 1.

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.

I'm going to roll it.

Can you give it a roll up now, Jim?

Yes.

I don't understand why we got that.

Apollo 13, Houston. It looks like VERB 49 maneuver will just take you right through there. You're going to have to go around it. Over.

Okay. That's what we're in the process of doing.

Si, si.

We're manually working our way around it, Vance.

Okay.

Pitch is 083.

How do I work my way around it? I'm 58g's, and I want yaw 231, right? I think they screwed up on our—our numbers again.

Zero out the needles; we're heading that way, and then we'll stop and talk about it.

No. Pitch is 83. Pitch should be up here. … … What's the number, 552?

Pitch should be 83 degrees. …

Roll 232; that's a long way to roll, … yaw is 62 …

… yaw.

… roll.

…

Okay. What's that read; there's 180.

Roger.

… is over here. Houston, 13.

Go ahead, 13.

There's something screwed up on our burn attitude. We're not getting the proper readings on the ball and the needles are centered. I'm not too sure what's wrong. Let's go through this procedure again.

Okay. Stand by 1. Let us look at it.

— angles you gave us, Vance, aren't correlating the VERB 49 numbers.

Okay. We'll check into it.

We know the ball is good. Why don't we just get a 40?

You better watch out; it's heading that way.

Apollo 13, Houston.

Go ahead, Houston.

Okay, Jim. To answer your last question, do you have PGNS checklist page 57 handy?

Right, we do. I'll check it.

As soon as you open up to that, I'll explain it.

Okay. Go ahead, Vance.

Okay. Under VERB 49, crew-defined maneuver, the flashing 0622 are the angles that we gave you that were loaded. The flashing 5018 actually represents FDAI angles, and so what you read on 5018 should —

Right. I understand.

— should not correspond with NOUN 22.

Yes. We appreciate that, Vance. It's just that right now we're trying to follow center needles that appear to be possibly taking us away from the place we know we want to be in the ball.

Okay, You're tending toward the gimbal lock area again. Heads up.

Roger.

There's our 83. —

Apollo 13, Houston.

Go ahead.

13, request you put in the POWER AMPL circuit breakers so that we can take a look at your angles.

You got it.

Thank you. And now high bit rate.

Apollo 13, Houston.

Go ahead.