Spacelog Apollo 13

I guess you're right.

Now wait a minute, Jack.

I just lost a lot of friends there.

And, Jack, you can tell Owen Morris that the RCS SYSTEM A/B 2 QUAD 1 breaker is still nicely in.

Aquarius, Houston. We think we've figured out a way to save you some time at a very critical—very full schedule. And that's by doing a docked coarse aline, since we got the LM up now. That would save you a maneuver or two.

Houston, Aquarius. It seemed to me a docked coarse aline might be quicker for—for Jack.

Yes. We think it would be, and it'd save quite a bit of time at a place where you're going to be pretty busy. Also save you some petrol.

Affirm.

Okay, Jim. We're looking at doing this in the service module SEP attitude, and the optics will be pointed away from the Sun. So it should be a good attitude for a P52.

Okay. So, we'll be going to the service module SEP attitude, at which time we'll do a docked coarse aline, and -

Then you want—You want Jack then to do a P527

The way we'll do that in our time line Jim, is to go ahead and do the service module JETT and then we'll just stay in that attitude and when it comes time in our time line as we've outlined, to bring the platform up, we'll proceed with the P52—coarse aline, and then the P52.

Okay. Are we going to use the same techniques that we normally do for LM activation? In other words, I try to maintain an attitude, and give him some angles and then—Are you going to give him the angles? Then he does the 52.

Basically, it's the same procedure just reversed, Jim.

Okay.

Another nice thing about this, is it's one we've done before.

And, Aquarius. One thing, however, that we do not plan to do is to proceed with the command module powerup prematurely.

Roger.

Okay, Houston. This is Jack.

Go ahead, Jack.

Okay. I just wanted to talk over with you, it looks like we've had some changes in the flight plan here, due to Jim's P52. Do you have—Can you talk over with me what your plans are?

Roger, Jack. Since we've got the PGNS up, we plan to use that information to give the CMC a dock coarse aline, and then we're in the service module jettison attitude, we'll wait until it comes time to power up the CMC, and we'll get the CMC a dock coarse aline, and we'll pick some good stars to give you a fine aline with, and it looks like we can pick some stars that are looking away from the Sun in which you can find in that service module jettison attitude; so, we'll save you quite a bit of gas: and save you some time in a very busy time.

Hey, that sounds good. Really fine.

Keeping warm?

Hey, it's warmed up here now. It's almost comfortable.

I'm looking out the window now, Jack, and that Earth is whistling in like a high-speed freight train.

We're clocking you at 48 000 miles and coming in at about 9000.

I don't think there's many LMs that have seen it like this. I'm still looking for Fra Mauro and Cone Crater.

You're going the wrong way, son.

Okay, Jack. It looks—just looking over what I may expect here, it looks like I'm just going to get three angles to do a VERB 41 NOUN 20, right?

That's what it looks like from here, Jack. It's pretty much the opposite of the LM activation procedure where we do the dock coarse aline.

Yes, except in a way we did a lot of VERB 06 NOUN 20, ENTERS, simultaneously, and then you all shipped him up post-torque values. You're not going to do anything like that are you?

Say again, please, Jack.

Okay. During the activation part, we do a lot of VERB 06 NOUN 20, ENTERS simultaneously, reading you out the difference in the angles, and then MSFN furnishes the post-torquing angles, in order to get the platform fine alined. Do you plan something like that or just three coarse aline angles.

Jack, we're going to give you three coarse aline angles, and then you can go right to your checklist as we're giving it, and start in with the VERB 40 NOUN 20.

And, Jack, how do you read?

Fine—square.

Just about the same number of lines?

Yes.

Okay. Go ahead, Joe.

Okay, Fred. Prior to 141:40:00, which is EI minus 1 hour, maneuver the LM to the following FDAI angles: roll, 130; pitch, 125; yaw, 012.4. The corresponding CSM gimbal angles will be roll, 291; pitch, 196; yaw, 045, and that's the pad. Over. And the computer is yours, Aquarius.

Thank you.

Okay. A LM SEP pad prior to 141:40:00, EI minus 1 hour, maneuver to following attitudes: roll, 130; pitch, 125; yaw, 012.4. The corresponding CSM gimbal angles are roll, 291; pitch, 196; yaw, 045.

Readback correct.

Aquarius, Houston.

Go ahead, Joe.

Okay. We're so efficient down here that we got an entry pad ready, Fred. Do you want to copy that for Jack? Over.

Stand by. I'll have to try to borrow his book from him.

Roger.

Can we hold off on that a little bit, Joe?

Oh, absolutely, Jim. We're well ahead. I just wanted to let you know that we had it.

Okay. I hope that when you send up all those uplinks to Jack that you could get them up to him quickly.

We're shooting for less than 5 minutes.

Sounds good.

And are you still using the computer?

That's a negative, Fred. The computer is yours.

And, Fred, the computer has your target load in.

Okay.

Houston, Aquarius.

Go ahead, Aquarius.

Okay. I just want to clarify one thing on the LM SEP pad. It appears to me that in my configuration, I could probably use a VERB 49 loading in 622, yaw, pitch, and roll, in that order; and then being able to fly out at 5018 in roll, pitch, and yaw. Is that correct?

Stand by; I'll verify it, Jim.

Okay, Joe. And while you're doing that I've got a question about the command module checklist.

Okay, Jack. Go ahead with your question.

Okay. Either I copied the circuit breaker wrong, or—I can't read it. Comes down just about the—oh, about the 20th one down, after panel 276, where it says CB INSTRUMENTATION POWER CONTROL 3 and 4, open. The next circuit breaker on panel 5—I—Would you give that to me again?

Roger. That's CB ESSENTIAL INSTRUMENTATION POWER, MAIN B. Over. And it's, closed.