Spacelog Apollo 13

Go ahead, Houston.

Jim, regarding your number 2 battery, we think that it's probably a sensor failure, a temperature sensor failure that's caused this alarm, rather than an actual overtemp of the battery; the reason being that we haven't seen any higher temperatures in the glycol loop. We expect to put the battery back on about 101 hours. That'll be about 10 minutes, and then we'll look at it some more there. Over.

Okay. Concerning number 2 battery, you think it might be a sensor failure because you haven't seen any changes, and you're going to put the battery back on the line in about 10 minutes.

That's affirm.

Houston, Aquarius.

Go ahead, Jim.

For information, Vance, about a half hour ago, I guess, Jack and I couldn't see constellations at certain spacecraft attitudes, stars. We could see the—Scorpio and Sagittarius and we could see Altair or Acrux and Alpha Centuri, Vega, stars of that magnitude, and our venting has stopped which allows us now to differentiate between the particles and the stars.

Roger; copy. Understand you can see the stars pretty well. Were you, at that time, in an attitude facing away from the Sun? I presume this is very attitude critical.

Yes. It is somewhat, Vance. If we have the Sun shining off the quads, it sort of ruins our vision; and also, if the Earth or the Moon are in the general field of view, we can't see anything.

Okay. Thank you.

Aquarius, Houston.

Go ahead, Vance.

Jim, we're ready to put that battery back on the line. Request you open the CROSS TIE BAL LOAD circuit breaker, panel 16, and then put back—BAT 2 back on the line.

Okay. First of all, we'll open the BALANCE CROSS TIE breaker on panel 16.

That's affirm.

Okay. The CROSS TIE BALANCE LOAD circuit breakers is in now, Vance. Now you want us to put battery 2 back on. Is that affirm?

Did you say it was in, or did you pull it out?

That's affirm. We'd like it out, and then BAT 2 on the line.

Okay. Coming up. BAT 2 is on the line. We have a MASTER ALARM and a BATTERY light.

Aquarius, Houston.

Go ahead, Houston.

Jim, it looks to us like your battery is good, that this is in fact a sensor problem; therefore, request you close the CROSS TIE BAL LOADs on—circuit breaker on panel 16. Advise —

Okay.

— advise that you will not have any malfunction indication on any of your batteries now, but we can watch it from the ground. Over.

Okay. We'll close the CROSS TIE BALANCE LOAD circuit breaker at this time.

Roger. Copy.

That's closed, and we don't have any warning on any of the batteries, but you can monitor from the ground.

That's affirm.

And, Jim, we have a lengthy procedure here for powering up the CSM and turning on instrumentation so we can check the TM, and this will take a large piece of scratch paper whenever you're ready to copy.

This is to power up the CSM?

That's affirm.

Okay. I'll tell you what, I'll have Jack get configured. He can copy that down and I'll have him—we'll get the stuff. Stand by.

Okay.

Okay, Vance, how do you read the Aquarius?

Okay, read you loud and clear, Aquarius. Is it cool in there now?

Okay. Yes, it's pretty cool. This is the third officer on this LM crew here. Ready to copy.

Okay. Jack, this is a lengthy procedure, take probably two or three pages. It assumes that you are in your nominal configuration, which was sent up—or in your day-flying configuration, which was sent up to you earlier today.

Okay. I can verify that we are in that configuration with the exception of panel 382, the water accumulator, which I've left off in case we wanted to get some more drinking water out of the command module, and I'll put those in the proper configuration before we do anything.

Okay. Ready to copy?

Okay. Go ahead.

Okay, Vance. Are you with me?

Roger. Why don't you read that group back, and then we'll proceed on.

Okay, sounds good. Because I don't know where I—how far I lost you. Okay, panel 4; TELCOMM, GROUP 1, to AC1. On panel 5, close the following circuit breakers: ECS, PRESSURE GROUP 1, MAIN B; ECS, PRESSURE GROUP 2, MAIN B; ECS, TEMP, MAIN B; ECS, SECONDARY LOOP TRANSDUCER, MAIN B; ECS RAD, CONTROL/HEATERS, MAIN B; BAT RELAY BUS, BAT B; BAT CHARGER, BAT B; INVERTER CONTROL, 2; INVERTER CONTROL, 1; EPS SENSOR SIGNAL, AC1; EPS SENSOR SIGNAL, MAIN B; EPS SENSOR UNIT, AC1; WASTE/POTABLE H₂O, MAIN B; INSTRUMENTATION, ESSENTIAL, MAIN B.

Okay; That's all correct. Is that reading rate okay for you?

Yes, that's fine.

Okay, and leave a little space if you can to the right of these because when we talk about the backup procedure, why then we can just use the same listing, and I'll—I'll tell you open instead of close these circuit breakers, or at least most of them. Over.