Spacelog Apollo 11

Roger. Sorry to bother you, Columbia. Two things: we request that you select 10 degree deadband in your DAP in accordance with the procedures on Foxtrot 9 7 in your checklist; and secondly, we'd like to leave a display on the DSKY that is not one that's cycling, being continuously updated. What you have when you get through widening the deadband will be a static display, and that'll be satisfactory. Over.

Okay.

Roger. Goodnight again.

Tranquility Base, this is Houston. Over.

Roger. Go ahead.

Roger. On your mission timer, we wanted to pull the circuit breaker and let it cool down for an hour and a half to 2 hours. I believe the breaker is currently open. It has been off, so go ahead and reset the mission timer circuit breaker. Put the timer control to RESET and hold it in RESET for 30 seconds, and then slew it to your desired settings left to right, and place the timer control to START. Over.

Okay. We'll try it.

Houston, our mission timer seems to be slewing okay. You want to give us a time hack? Or can we get it off the CMC LGC, I mean?

Roger, Tranquility. I'll give you a time hack at 114 31 00. It's about 30 seconds from now. Over.

Stand by for a Mark at 114 31.

Okay. … you.

Stand by.

MARK.

Tranquility, this is Houston. Did you copy my Mark at 114 31?

Roger. Thank you, and our mission timer is running now.

Roger. Very good. And, I've got a consumables update for you if you're ready to copy or listen. Over.

Stand by.

Okay. Go ahead.

Okay. RCS Alfa is 81 percent, RCS Bravo 75 percent. Coming up on 115 hours GET, descent oxygen is 31.8 pounds or 59 percent; descent amp hours 858, and ascent amp hours 574. Over.

Roger. Copy. Thank you very much.

Roger. Out.

Tranquility, this is Houston. We also have a set of about 10 questions relating to observations you made, things you may have seen during the EVA. You can either discuss a little later on this evening or sometime later in the mission at your option. How do you feel? Over.

I guess we can take them up now.

Okay. And your friendly Green Team here has pretty well been relieved by your friendly Maroon Team, and I'll put Owen on with the questions.

Tranquility —

Okay. Thank you, Bruce. Go ahead.

Tranquility, Houston. First question here is how your best estimate of the yaw on the—of the LM as compared to the nominal preflight plan. Over.

We got 13 degrees left on the ball, and I think that's probably about right. Looking at the shadow and so on, we prob—probably about 13 degrees left of the shadow.

Roger. That's 13 degrees left of the shadow. And, next question relates to the depth of the bulk sampling that you obtained near the first part of the EVA and any changes in composition that you might have observed during the bulk sampling interval. Over.

I'm not sure I understand that question, but we got a good bit of the ground mass in the bulk sample plus a sizable number of selected rock fragments of different types.

Roger, Neil. One of the implications here is the depth from which the bulk sample was collected. Did you manage to get down there several inches or nearer the surface? Over.

We got some down from as much as 3 inches in the area where I was looking at variation with depth in the bulk sample. There really wasn't appreciable difference, and I didn't run into any hard bed. Later on, or at some other times and other areas, why, I'd get down just a short distance, an inch or two, and couldn't go any further.

Roger. Believe we understand down as deep as 3 inches, did not hit any hard bed, and no significant changes in composition to that depth. Next question, the—the second SRC was packed rather hurriedly due to the time limitation, and wonder if you would be able to provide any more detailed description of the samples which were included in the second SRC. Over.

We got two core tubes and solar wind and about half of the big sample bag full of assorted rocks which I picked up hurriedly from around the area. I tried to get as many representative types as I could.

Roger, Neil. Next topic here relates to the rays which emanate from the DPS engine burning area. We're wondering if the rays emanating from the—beneath the engine are any darker or lighter than the surrounding surface. Over.

The ones that I saw back in the aft end of the spacecraft appeared to be a good bit darker; of course, viewed from the aft end, why, they did have the Sun shining directly on them. It seemed as though the material had been baked somewhat and also scattered in a radially outward direction, but in that particular area, this feature didn't extend more than about 2, maybe 3 feet, from the skirt of the engine. Over.

Roger. Understand that near the aft end out to the east that the rays did appear darker. I understand, Buzz, that these were—this was the appearance of the material which had been uncovered by the rays that appeared darker for 2 or 3 feet extending outward. Is that correct?

No. I wouldn't say it was necessarily material that had been uncovered. I think some of the material might have been baked or in some way caused to be more cohesive and perhaps flow together in some way, I don't know. Now, in other areas, before we started trampling around out front, why, we could see that small erosion had taken place in a radially outward direction, but it had left no significant mark on the surface other than just having eroded it away. Now, it was different back in the—right under the skirt itself. It seems as though the surface had been baked in a streak fashion, and I think a couple of pictures on film will show this. But that didn't extend out very far. Over.

Roger, Tranquility. And this baked appearance that you described, at least the suggestion is that it was due to the heat of the engine at any rate. Next subject, did —

Hey, Mike, how's it going this morning?

How goes it?

Hey, real fine. While you're —

I don't know yet, how's it going with you?

Real fine here. Columbia, request P00 and ACCEPT. We'll shove the state vector in for you right away.

Okay. It's coming up now, Columbia. We're going to keep you a little busy here. As soon as we get the state vector in, we'd like you to go ahead and do a P52 option 3 on this night pass, and then when you come on around the other side there, we'll give you some landmark tracking information on prime 130.

Okay.

And for your information, we're also going to have Tranquility Base do a P52 when you come around the other time; and I have the P22 information if you're ready to copy.

Go ahead.

Okay. Track landmark 130 prime using P22, and for information, this will properly position your rendezvous radar transponder. T1 is 122 plus 16 plus 05—whoops, okay. Stand by.

Columbia, Houston. The computer is yours.

Okay. And I'd like the grid square of this crater 130 prime. Over.

Columbia, Houston. Say again about 130 prime.

I'd like its grid square, please.

Columbia, Houston.

Go ahead.

Roger. I have the T1 and T2 times and also the longitude of the 130 prime. We're working on the grid squares and we'll get them shortly.

Okay. Ready to copy.

Okay. T1: 122 plus 16 plus 05. Tango 2 is 122 plus 21 plus 11, and 6 miles north of track. And do you want your NOUN 89 values?

Yes, please.

Roger. Latitudes, plus 01.243. Longitude over 2, plus 11.844. Altitude, minus 001.46. Over.

Copy T1: 122 16 05. T2: 122 21 11, 6 miles north, NOUN 89 is plus 01243, plus 11844, minus 00146.

Columbia, affirmative. And at the T1 time, put your rendezvous radar transponder switch to OPERATE.

All right.

And this 130 prime is the same one that you tracked prior to descent. Over.

Okay. You've updated your information as to the LM's position and this is your best estimate of where the LM is, is that correct?

Columbia, that's negative. This 130 is the little bitty crater there that you tracked—John Young's crater—that you tracked prior to descent. And we want that —

Fine. Okay. You've given up looking for that.

Affirmative. We want this for one last fix on your plane.

All right. Fine. Understand. Thank you.

And when the LM does his P22 on your transponder, well then, that'll be our last shot at the LM's position.

Roger. Understand. Do you care whether my transponder is on before T1?

Roger. It'll be on WARMUP prior to that time, and you can go to OPERATE anywhere around that time.

Yes. I gather it's on its 24 minute warmup now?

Roger.

And, Houston. The computer is yours, you can go to BLOCK anytime.

Roger. BLOCK, going P52, option 3.

Roger. And we'll see you coming around the other side. About 1 minute to go, and all your systems are looking good.

Tranquility Base, Tranquility Base, Houston. Over.

Good morning, Houston. Tranquility Base. Over.

Roger. Loud and clear. And how is the resting standing up there. Did you get a chance to curl up on the engine can?

Roger. Neil has rigged himself a really good hammock with a waste tether, and he's been lying on the ascent engine cover, and I curled up on the floor. Over.

Roger. Copy, Buzz. Got a couple of changes to your surface checklist here, and in general, what we're going to want you to do is P22, tracking the command module for one last hack on your position there. And this will be—in other words, P57, P22, and then to press on with the checklist, and the rest of them are a couple of minor changes in the checklist. The main one being that we do not want the rendezvous radar on during the ascent, and we think that this will take care of some of the overflow of program alarms which we're getting during descent.

Okay. We had the rendezvous radar in SLEW during descent, though.

Tranquility Base, Houston. I missed that. Say again.

Roger. I say again. We had the rendezvous radar switch in the SLEW position, not the LGC position.