Spacelog Apollo 11

Roger, 11. And we'd like you to do a waste water dump at 84 hours down to 25 percent. Over.

Roger. I understand. Waste water dump to 25 percent at 84 hours.

Roger. And, Mike, we'll have LOS in about 11 minutes at 83 44. AOS is 84 30, and prior to—or at LOS, we would like you to go—Configure the S band for high gain track to REACQ, high gain beam to NARROW, and let's try that to see if we can get an automatic REACQ at the next AOS. Over.

Good idea.

I'm in REACQ and NARROW now.

Roger.

Apollo 11, Houston. Also, that water that you got on the aft bulkhead, we—If it's not too much, we just recommend sopping it up and then throwing the sponges away in the waste stowage area. If it's too much, then we recommend using the procedure in the checklist on page F10-14. Over.

Apollo 11, Houston. Would you have Buzz make sure he gives us the OPS pressure readings before you close up? Over.

Will do.

Houston, 11. The OPS read 5750, both bottles.

Apollo 11, Houston. Over.

Houston, Apollo 11.

11, Houston. Roger. Reading you fine, and it looks like the automatic REACQ went very well just as soon as you came around the limb. We have several small items to discuss with you here just before you go to sleep. Over.

Go ahead. Over.

Okay, 11. First of all, on our LM systems checks, everything went fine. I would like to remind you, though, tomorrow you may see an ascent pressure light when you activate the MC&W. There should be no problem, however. You did note that the APS AUX tank pressure was only reading 111 psi, which is normal at this point, but below the level which will trigger your light due to the helium which has been dissolved into the propellant. Over.

Roger. Understand that. Thank you.

Roger. And next item, the supercritical helium rise rate is nominal, and you also had that question for us about your thruster activity during the P22 on the last REV. Believe we understand that now, as you reported that your pitch was in ACCEL COMMAND and your yaw and roll were in RATE COMMAND. You were firing your pitch thrusters. This will couple rates into your yaw and roll axes, and the—You were at that time holding only half a degree deadband and coupling rates into yaw and roll produced the extra firings about the yaw and roll axes. Over.

Yes. That may be true. It's very peculiar coupling, in that it waits longer than you would think and its reaction is greater than you would think. We were getting yaw rates of around four tenths of a degree per second, for example.

Roger, Mike. We did play the data back, and that's the way it looked upon analysis of the chart recordings back here. Over.

Okay. Fine.

They've also looked at the results of your landmark tracking. The marks all apparently were very good, and we've got a full page of data here relative to the altitudes of the various site locations, which I won't read up to you, but I did want to let you know that the marks apparently went very well. I also have your consumable budgets, particularly your RCS propellant quantities. They're Deltas from nominal if you should want them. Your worst quad is quad Charlie, which is 9 percent low. I'll not read up the others unless you want them. Over.

Okay. How about the O₂ fuel cell purge? You want that now?

I'll have to stand by just a moment.

Okay. And then the other one is, we're still charging battery A.

11, Houston. We would like to delay the fuel cell purge until the backside of the Moon, and you go ahead and—should terminate your battery charge at this time. Over.

Okay. Understand. I knew we had another O₂ and H₂ purge coming up in the morning; I wasn't sure whether you wanted to go through with this one or not. I'll wait until the next side and then do it.

That's fine, Buzz.

Terminate battery charging now.

That's right, and one other systems item here—in order to balance your CRYO tanks, would you get your O₂ tank 1 and your H 2 tank 2 heaters off? Over.

Okay. I have O₂ tank heater 1 off, and H₂ tank heater 2 off.

Houston, Apollo 11.

11, Houston. Go ahead.

Roger. We're thinking about taking the monocular with us on into the LM. We think it might prove to be of some use. Over.

Roger, Buzz. It sounds like a good idea for some of your surveying work there inside the cockpit. Over.

Okay. You want to run that by with whoever might be concerned?

Apollo 11, Houston. We have apparently lost the high gain lock. We would appreciate it if you would give us a help manually to try to relock up on the high gain. Over.

Houston, Apollo 11. ..