Spacelog Apollo 13

Joe, how far out are we now and how fast are we closing?

Okay, Jack. The plot shows you about 130 000 miles out, which is about, gee, 10 000 closer than you were when I came on a couple of hours ago. And let me check with FIDO for your rate of closure.

Hey, Jack. Over.

Go ahead.

Your smiling FIDO says you're making 5040 in a 5000-mile zone

Aquarius, Houston. Over.

Go ahead, Joe.

Roger, Jack. Hate to keep bugging you, but we would like another volts and amps reading. Over.

Okay. We'll get it for you.

Good show.

Joe, did our sticky MOD on that—those CO₂ canisters work? I'm sorry—…

Jack, I think you asked if the canister MOD was working and the answer is, it sure as hell is.

Okay, Joe. I got the voltage. It's 39.0 amps and 1.75.

Houston, do you read Aquarius?

Aquarius, Houston. That's affirmative.

Okay. We had a dropout there for a few minutes. … on either antenna.

Gee whiz, Jack, I—when did it happen? Over.

Just now. I just got you back.

Okay. We had a handover, but that was about a half an hour ago, and I didn't call you on it. Let me check with INCO and see if he thinks everything's okay. Your COMM sounds just as good as it's ever been.

Yes. I'm in real good shape.

Jack, Houston. Over.

Go ahead.

Roger. We're checking into it. We think we lost lock in Madrid for a while, and we've got it back now.

Okay. Real fine …

Okay.

You might also check with FIDO whether we … perigee …

You're getting a little weak. Did you say you wanted to verify what—what your vacuum perigee is? Over.

Yes. …

Jack, Houston. Over.

Go ahead.

Okay. The good FIDO gives us a vacuum perigee at the present time of 23.6 with a flight path angle of minus 6.25 degrees. That's without a midcourse. He's kind of tossing around the idea of doing a midcourse-7 maneuver at 5 hours before entry. If we do it, it looks like it won't be more than 2 feet per second. Over.

Okay.

And, Jack, Houston. We verified that that COMM problem was a ground problem.

Okay. Thank you. That FIDO is really cooking today.

Oh, he's having a ball.

It must be because we haven't made any waste water dumps.

(Laughter)

You can tell Jay and David that I went for a whole flight and didn't use the bathroom.

Aquarius, Houston. Over.

Go ahead.

Jack, we'd like another volts and amps reading at your convenience.

Okay, Houston. It's 39.2 volts; 1.6 amps.

Okay. Thank you. We copy; 39.2 volts, and 1.6 amps.

Houston, Aquarius.

No questions, Joe. Just …

Aquarius, Houston. Over.

Go ahead.

Okay, Jim. It's about time, at your convenience, for another volts and amps reading on the command module. For your information, we put 6 amp-hours back in the battery already and we've got about 14 to go. It's looking real good, and I also just got the word that the entry weather tomorrow is looking better all the time. Really looks great.

That's good. When I went to bed last night, … a lot of rain …

Couldn't copy that, Jim. Sorry.

Houston, Aquarius.

Aquarius, Houston. Go ahead.

Roger. 39.2 on the volts; 1.4 on the amps.

39.2 and 1.4. Thank you.

Aquarius, Houston.

Go ahead, Joe.

Roger. Just for your information, in case it happened when you were off watch, the master caution circuit breaker is still pulled, and we're seeing the—the malfunction indication on the descent battery now, but all the parameters still look just as good as ever, and that's just for information.

Okay. I see the battery light flickering now.

Okay. Recommend you ignore it.

Aquarius, Houston. Over.

Go ahead, Houston.

Jim, it's volts and amps time again, at your convenience.

Okay.

Houston, Aquarius.

Go ahead, Aquarius.

Aquarius, Houston. If you gave me those readings, I didn't copy them. Over.

Houston, Aquarius. Do you read?

Aquarius, Houston. Okay; go ahead.

Volts, 39.3; amps, 1.25.

Okay. Copied 39.3 and 1.25. Jim, did Jack tell you what your trajectory looks like? Over.

Haven't got up to … on it. How about giving me a rundown?

Okay. We are looking at a vacuum perigee right now of 23.6; flight path angle of minus 6.25; and if we decide we want to trim that up, we're looking at a midcourse of about 2 feet per second. Your consumables, of course, are getting better all the time; we've got 163 hours of water, 230 hours of oxygen, and 172 hours worth of electrical power. Over.

That sounds good.

Aquarius, Houston. Over.

Go ahead, Houston.

Okay, Jim. We would like to get another check from you on the propellant tank temperatures, as we did yesterday. And the procedure is to, on panel 16, circuit breaker PROPELLANT, DISPLAY/ENGINE, OVERRIDE/LOGIC to close. Then go to your display and read the tank 1 and tank 2 temperatures for us, and then open the circuit breaker again. Over.

Okay. I'm closing now—the DISPLAY/ENGINE, OVERRIDE/LOGIC.

Roger.

Okay. And the reaction control temperatures are 65 in A and 65 in B.

Okay, Jim. We'd like the descent tank temperatures, too. Over.

67; oxidizer is 63; descent tank 1 … is 64; the oxidizer is … Did you copy? Over.

Hello, Houston. Did you copy the—the DPS display temperatures?

Jim, I copied 63 and 64, which I think were the descent 1 temps, and that's all I got.

Okay. I'll go over it again. I'm on descent 1, now and fuel is about 64, and oxidizer is 65, and I'll go to descent 2 —

Okay. Thank you very much —

— our descent 2. Okay. I've got descent 2 now right up on 67 and 66.

Roger. We copy that, and once again we'd like to get the volts and amps check in the command module. Over.

Okay. I'm going to go up there and get it. Jack is—and Fred are asleep, so I'll be off the air a minute.