Spacelog Apollo 13

What do we make it out of, Vance?

One canister with a —

— How about planning a rendezvous procedure?

— with a plastic roof.

Just for information, Houston, during—just prior to going around the Moon, we saw a lot of debris that was floating by us, including some—one rather large piece looked like the wrapping off of a line of some sort that is—still is with us.

Roger. Copy, Jim.

Even after our free-return midcourse yesterday.

Okay. We copy that.

No matter what I do, I can't stop that. Roll either way won't do it.

Jim?

Well, I don't see any way around it, Jim. It sure doesn't seem to be doing much, does it? It won't go down.

I don't know. I wonder if they tried that in the simulator. I can't seem to get roll to go up. It goes down on me, no matter how I hit the controllers.

Got pitch zero.

You can really see a change in rate?

… jar here, see if it'll couple in roll.

No?

There we go.

That does it.

I'm glad, too.

I don't know what caused it.

Here we still have 67-percent fuel level. I wonder how come they didn't … DELTA-V curve?

Aquarius, Houston.

Go ahead.

Jim, we don't have any data on your movements right now. How does it look like this procedure's going to work out so far as getting an attitude set up, the first part of the procedure?

Well, Vance, I've been trying to use MINIMUM IMPULSE only attitude control to get my roll and yaw—the roll and pitch, rather. But, with the attitude control only in this configuration, I—I can't command these—the roll the way I want to. So, I had to go to TTCA to get my roll to build up towards zero, it was going—decreasing towards 270. I really don't know what the combination is in the attitude control, that you can get the control to pitch and roll the way you want it to. You've got to use the TTCA.

Roger. Copy.

I now have both pitch and yaw—or pitch and roll going toward the designated amounts, now passing through 23 degrees in pitch, and I'm going up past 321 degrees in roll. And I am letting go that direction and when I get there, 90 in pitch and zero in roll, I'll go to AUTO and damp the rates.

Get a little sleep? That's okay.

We've got to rig up a method of using those lithium hydroxide canisters.

Okay, Houston. We just got a MASTER ALARM and an ECS light. I take it the partial pressure CO₂ is—Yes—That's what tripped it.

There's that mother.

Aquarius, Houston. Say again.

All right. CO₂. Our CO₂ value is getting high. We had a DPS ECS light and a blinking component light.

Okay. Copy.

Stand by on that PTC O₂.

Say again, Houston.

Hello, Houston. How do you read? Over.

Okay. Read you loud and clear now, Jim.

Okay. Did you hear what I just said about the ECS light and the blinking CO₂ component light?

Okay. We got that and—Stand by 1.

Okay.

Not much.

Jack, we might have to have you rig up this CO₂ rig they're talking about.

Go ahead. Houston. Over.

Oh! We've got a long ways to go.

Go ahead.

Okay, Jim. We're going to have to get back with you in a couple of minutes on whether or not we switch over at this time to your other canister. Second point, it might help in setting up this PTC if you concentrate on roll first, and get that going; and then work on pitch, when roll is established, and sort of take whatever yaw you get.

Okay. Vance, I tried that but when I start doing roll only I get pitch coupled in with it. But both of them rolling up toward this desired amount, though. I'm up to 46 and in pitch and 326 in roll.

Okay. Understand you've tried it.

Okay, Jim. Since the first recommendation on how to maneuver PTC didn't work out, we have another one. And you might try this. Put yaw at zero, then start the roll, and the pitch after that.

Vance, do you read?

Yes. I do now. Go ahead.

Aquarius, Houston. Over.

Okay, Vance. Go ahead.

Okay. Really, I think we should give you a more detailed procedure on that; and, in general, those are the materials that are to be used, but let us get back with a detailed procedure on how to make this cartridge arrangement work.

Okay.

And to answer your question about PTC, Vance, it's rather difficult to use yaw in zero right away. So what I'm doing, yaw is working toward zero right now. Pitch is working toward 90, and roll is working toward—zero. So, we—We're just going to take some time to get there, that's all.

Roger. Quite a bit of noise now. I understand you're still having a problem getting there with the PTC.

We are getting there slowly.

Okay.

Aquarius, Houston. Let's try FORWARD OMNI.

I don't know, it looks …

I don't know, it looks that way.

Okay, Houston. How do you read, now?

Houston, how do you read?

Loud and clear, now. Go ahead.

Okay. I switched to FORWARD OMNI, now.

Roger. …

Okay.

They're … off. They can't stop pitch.

…

That would only use fuel.

… and stick it around that way.

Must have the wrong thing, there.

Oh, yes. That was pretty.

That didn't sound very good.

Yes, hang on to that.

…

They're a hell of a long ways away.

Right.

Yes, we're not moving that fast to Earth.

Not yet.

Hey, we're already … this time, huh?

Yes.

… to the trajectory.

Huh?

…

Yes, I've been trying to get roll out. Roll to zero. Just go ahead to zero, I'm going to put it in ATT HOLD. Then it'll take out yaw, leaving pitch the way it is; then we're going to pitch down.

We've got to think about when we have to start changing that canister.