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Jim Lovell (CMP)
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It appears that we did a grave injustice to the food people. Just after our TV show, Santa Claus brought us a TV dinner each, which was delicious, turkey and gravy, cranberry sauce, grape punch; outstanding.
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Mike Collins (CAPCOM)
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Roger, Jim. Glad to hear it. Now we're down a here eating cold coffee and bologna sandwiches.
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Frank Borman (CDR)
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Roger. We've got an awful lot of these stars to mark on now, Mike, and they were having some concern about the PTC. Will you let us know if we stay in one position too long, or if we have to knock off and do some PTC?
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Mike Collins (CAPCOM)
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Apollo 8, Houston. We are monitoring your temperatures. The quads all look good. We will continue to do so, and we expect no difficulty with them during the P23 work.
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Mike Collins (CAPCOM)
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Roger, Bill. We would like to talk about your high-gain antenna sometime when you get a minute.
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Mike Collins (CAPCOM)
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Okay, Bill. We think it would be an extremely worthwhile thing to find out how it operates in the AUTO REACQ mode, and we propose running a test on it in that mode from 109 to 111 hours GET. Over.
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Mike Collins (CAPCOM)
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We have a detailed procedure which we can read up to you anytime you're ready.
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Mike Collins (CAPCOM)
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Okay. We suggest the start time 109 hours GET, stop time 111 hours, and you'll be in a PTC. We're requesting a left roll rate, which we notice that you've been preferring, a left roll rate of 1 revolution per hour, and this is in your present PTC attitude (i.e., pitch 10 degrees, 010 degrees, and yaw 45 degrees). The procedure is this: step 1, stop at roll angle 150 degrees; acquire—this is step 2—acquire in MANUAL mode; three, switch to AUTO NARROW BEAM; four, make sure tracking in AUTO mode then switch to AUTO REACQ mode; five, position the high-gain antenna —
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Mike Collins (CAPCOM)
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Okay. Step 5, position high-gain antenna pitch and yaw control to predicted earth's rise angles, and those angles are yaw 50 degrees, pitch minus 40 degrees. Over.
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Mike Collins (CAPCOM)
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Okay. Two more steps. Step 6, remain on high-gain antenna in this mode for two REV's. Do not switch to OMNI anytime during these two REV's, and maintain mode configuration of voice and data. We expect loss of track should be no more than 15 minutes per REV. Over.
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Mike Collins (CAPCOM)
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And the final step, 7, if any problem arises, go back to your initial gimbal angles of 10 degrees pitch, 45 degrees yaw, and 150 degrees roll; reacquire and go to AUTO mode. Over.
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Bill Anders (LMP)
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Okay. If—let's see, if we—I don't understand your last comment. If we get into a problem, you want us to go back to 150 degrees roll?
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Mike Collins (CAPCOM)
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Well, all we want you to do is go ahead and reacquire in the AUTO mode, Bill. And it looks like that would be one way of doing it. But all we're saying is, you know, if you want to talk to us about something, or you have my other problems, or you don't like the way it looks, anything at all, just go ahead and reacquire in the AUTO mode.
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Bill Anders (LMP)
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Yes, why don't we just say if we do have problems, it doesn't pick it up when it's supposed to, give it a good try, and then call you up on the OMNI's or position ourselves and we'll talk about it and try for another two REV's,.
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Bill Anders (LMP)
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Okay. It's worked. We tried it once or twice on the way out, but the one modification is once it did break lock, and go to its MANUAL position, but I switched to the OMNI's in between. That sounds fine.
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Mike Collins (CAPCOM)
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Bill, could you run through that again? We're not reading you too loud, and would you say again what you tried on the way out, please.
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Bill Anders (LMP)
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On the way out, they gave us some REACQ angles which we used, and once it broke lock and re-positioned itself, why, it went over to the OMNI's and waited till we got to near breaking lock again and switched back and snapped right in there.
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Mike Collins (CAPCOM)
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Roger, Bill. We got a bunch of tapes of some of your favorite music down here. You be interested in hearing a little background on the S-band?
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Jim Lovell (CMP)
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Roger. For some reason, we suddenly got a PROGRAM 01 and no attitude light on our computer.
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Mike Collins (CAPCOM)
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Stand by one, Jim. We're working on a procedure for getting you cranked back up again.
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Mike Collins (CAPCOM)
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Okay. Jim, while we're working on this procedure, we'd like to know did you select 01, and you get a VERB 37 ENTER, 01 ENTER?
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Mike Collins (CAPCOM)
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Okay. We understand. Why don't you just hold what you've got on your DSKY, and we'll be with you shortly.
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Mike Collins (CAPCOM)
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Okay. Frank, our procedure is to select P00, and from P00 go to P51, and get a platform alignment. After you've done that, we will send you up a P27, a REFSMMAT, and then you can do P52 REFSMMAT options. Then you'll be back in business. Over.
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Frank Borman (CDR)
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Okay. We've completed a P51 now. You want us to try a P52, or you want us to wait till we can put a REFSMMAT in?
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Mike Collins (CAPCOM)
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We're putting together a P27 load for you now, Frank; that's the reason for the delay. We just want to make sure we don't overlook anything before we send it up to you.
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Frank Borman (CDR)
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Okay. We'll just sit tight then. We've got a good P51. We'll just wait till you put in a REFSMMAT, and then, of course, we'll fine align over to that, right?
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Frank Borman (CDR)
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I suggest that we go ahead while you're doing that, do a P52 here; and let it do an automatic and just tweak this up. Jim had to use Rigel and Sirius, and they're pretty close together. And although we got a zero difference for the star angle, that might not be a bad idea just to try a 52 here.
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Mike Collins (CAPCOM)
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Frank, we feel that procedure that you're talking about is really not required, and it's sort of wasting your time. You'd still have to—upon completion of that, we'd have to send you a new REFSMMAT, and you'd have to go ahead and do P52 to that REFSMMAT in addition. Over.
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Mike Collins (CAPCOM)
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Apollo 8, Houston. If you'd go P00 and ACCEPT, we have our P27 ready. We'll send you up a REFSMMAT. Over.
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Mike Collins (CAPCOM)
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Apollo 8, Houston. Frank, we'd like to make sure you understand that when you do your P52, you want to select option 1, the preferred option, because those are the registers we're blinking now with this P27.
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Mike Collins (CAPCOM)
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Roger. When Jim gets to the end of P52, he's got a flashing VERB 37. We'd like him to not proceed, to hold at that point; we'd like to read some bits and pieces out of the computer at that time. Over.
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Mike Collins (CAPCOM)
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Apollo 8, if Anders has got time to give us a countdown, could we get the BIOMED switch from center to left?
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Mike Collins (CAPCOM)
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Thank you, Jim. And I'll give you at estimate here on how long we want to hold at this point; it won't be too much longer.
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Mike Collins (CAPCOM)
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Go ahead and delete the remainder of the P23's that you're working on now, go back to PTC attitude, and then pick up where it says 108 hours in the flight plan to pick up again there with your P23, or if you prefer to slip that time a couple of hours, if you want to get some rest in between.
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Mike Collins (CAPCOM)
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Roger. I say again, your state vector is just fine; it's still ticky-poo, and the reason we're holding here is that we're checking to see if any P23 information was lost. That's reason one, and the second reason is that your W-matrix shares some computer memory cells with P01, and we are getting a clarification on the status of your W-matrix before we proceed. Over.
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Mike Collins (CAPCOM)
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Roger, Frank. We're coming up on time for an oxygen purge on all three fuel cells. It might be a good time to do it while we are waiting here.
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Mike Collins (CAPCOM)
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Apollo 8, Houston. That's enough on fuel cell number 1; if you'd start on two please.
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Mike Collins (CAPCOM)
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Apollo 8, Houston. We're in low bit rate now. Last time we saw you, you were still purging. Over.
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Mike Collins (CAPCOM)
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Roger, Jim. I've got a short procedure I would like to read up to you on your DSKY, and I'd like to explain what it is. Your W-matrix shared some memory locations with P01; therefore, the W-matrix that you have right now is not a good one, and we would not want you to continue your P23 sightings with that matrix. So the procedure I'm going to give you is going to cause the matrix to reinitialize itself prior to your next P23, when you go into P23. And this will put you back with the value of the W-matrix which you loaded after TEI, you remember, that 3303 thing. And if this has any further effects on the flight plan, we're in the process of sorting that out, and if need be, we'll send you up a revised sighting schedule later, both with the COMM and loss of COMM case. Over.
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Mike Collins (CAPCOM)
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Okay. Insert without releasing the flashing VERB 37 the following: VERB 25 NOUN 07 ENTER, 77 ENTER, 40 ENTER, ENTER, VERB 37 ENTER, 00 ENTER. Over.
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Mike Collins (CAPCOM)
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Roger. You should have flashing 37 on your DSKY now, and without releasing that flashing 37, go ahead with the VERB 25, et cetera.
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Jim Lovell (CMP)
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Roger. Okay. I see what you mean. Okay. We'll insert VERB 25, NOUN 07 ENTER, 77 ENTER, 40 ENTER, ENTER, reinsert VERB 37 ENTER, 00 ENTER.
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Mike Collins (CAPCOM)
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That's all correct. Say, if you've got any questions about that, we would be happy to answer them.
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Frank Borman (CDR)
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Is there any danger that this might have screwed up any other part of memory that would be involved with entry or anything like that?
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Mike Collins (CAPCOM)
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Frank, all indications are that there is absolutely no problem with anything in the computer memory other than the W-matrix. However, we are continuing to look at it, and if there is any doubt in our mind, we will ask you to dump the memory locations for us later. Over.
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Mike Collins (CAPCOM)
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Roger, Jim. We thought you might be interested in knowing, based on 2-1/2 hours worth of track after your last midcourse, and looking ahead, we're predicting the midcourse correction at 122 hours will be less than 1 foot per second. And keep it on going to entry interface minus 2 hours, we're predicting 2 foot per second midcourse at that time. Now those numbers will be refined; we'll get about another 8 hours of track on you before we amend them. Over.
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Jim Lovell (CMP)
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After we do these next P23's, I'll see what our P37 gives us. What's that midcourse, 122 hours that has practically zero?
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Mike Collins (CAPCOM)
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Yes. It's looking to be less than 1 foot per second, about four-tenths of a foot per second right now. And then the one before entry, at 2 hours before entry interface, is looking to be about 2 feet per second.
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Bill Anders (LMP)
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Roger. Got the JOD back on watch again. We want to make sure we don't overdo the star sightings at the expense of thermal control, so you might keep an eye on us and give us a NO-GO if we start getting too hot on one side.
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Jim Lovell (CMP)
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No, I'm right here. We're going to start doing cislunar NAV right now, and Bill's up in the left-hand seat.
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Mike Collins (CAPCOM)
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Roger. Understand; you're going to do some P23's now. We thought you were going to take a rest and do them later.
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Jim Lovell (CMP)
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No, Frank is asleep now. We'll get these out of the way. So I'm coming over to do a trunnion alignment at this time, and then we'll go into the P23.
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Mike Collins (CAPCOM)
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Okay, Jim. There's one thing before you get started on the P23. What we told you before, we still think is absolutely correct. The only thing in the computer memory that is changed by that P02 is the W-matrix. However, as an additional precaution, we'd like to dump the computer memory and go through it and check it bit by bit and make sure everything is exactly copacetic. Over.
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Mike Collins (CAPCOM)
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Affirmative. We're getting Goldstone configured for it; it'll be just a minute. And while we're doing that, I can read you this procedure if you're ready to copy.
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Mike Collins (CAPCOM)
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Okay. We'd like a VERB 01 NOUN 01 ENTER, 333 ENTER, and then we'd like for you to read us register 1. Register 1 we expect will be a 10 000, and if register 1 is equal to that, then what that means is that the computer will dump its erasable memory twice. That's 10 000 numbers, twice number for the erasable memory dump. If it's not reading 10 000, then we'll ask you to make it read 10 000 by going VERB 21 NOUN 01 ENTER, 333 ENTER, 10 000 ENTER. After you've done that, the dump VERB is VERB 74 ENTER, and that will automatically dump the total erasable memory twice, and return you to the proper configuration.
Expand selection down Contract selection up -
Jim Lovell (CMP)
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Okay. The procedure will be VERB 01 NOUN 01 ENTER, 333 ENTER, and read out register 1. Then 10 000—the memory—the computer will then dump the memory twice as properly configured. If not, we have to load in 10 000, and we do that by going VERB 21 NOUN 01 ENTER, 333 ENTER, 10 000 ENTER, and VERB 74 ENTER. Now if register 1 does read 10 000, then we'll still have to do the VERB 74 ENTER, is that correct?
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Mike Collins (CAPCOM)
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That's affirmative. That VERB 74 ENTER is what starts the dump. Then we just prior to that want to make sure we got 10 000; we made sure. And just hang loose one on Goldstone down here; we're getting it configured.
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Mike Collins (CAPCOM)
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Apollo 8, Houston. Goldstone is all ready, and you can go ahead with that procedure, Jim.
Spoken on Dec. 25, 1968, 10:40 p.m. UTC (55 years, 10 months ago). Link to this transcript range is: Tweet
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