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Ken Mattingly (CAPCOM)
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Okay. We'll take a look at it then. If there wasn't anything that was previously recorded in low bit, then we'll come back and maybe take a look at that, too.
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Bill Anders (LMP)
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Okay. We might get … if maybe we can get in a little closer to the moon to put as big a strain on it as we can.
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Ken Mattingly (CAPCOM)
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Okay. We've completed the dump, and the tape recorder's back to you. You can use it any way you want. We may want to dump that thing again, and if we do we'll go ahead and use the same information unless you have something else that you specifically wanted to put on there later. Listening to the voice quality—it sounds real good. We're coming up on a midcourse 4 and right now it's—talking about doing it on time, and you can anticipate the burn in the neighborhood of 3 foot per second. We're considering and would like for you to think about the possibility of doing this burn using the onboard vector and just have us update the vector in the LM slot, so that you will have the MSFN vector on board. But it looks like it won't have any big effect on the burn results, and it might prove interesting. So if you think about that one for a bit and let us know if you have any suggestions or thoughts on the subject.
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Bill Anders (LMP)
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Roger. You say it uses the onboard vectors and leaves the MSFN vectors on the LM slot.
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Ken Mattingly (CAPCOM)
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That's affirmed, if that's what you would like to do, right. We considered it, and it looks like that would be a reasonable thing.
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Bill Anders (LMP)
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Roger. Frank and Jim are asleep now, and I'll bring this up to them when they wake up.
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Ken Mattingly (CAPCOM)
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Okay, Bill. I guess I want to belay my last about using the onboard state vector for MCC 4. After looking at it some more on the ground, they've got to get going on making the PAD's and doing all their computations, and rather than put it off or do it twice, we're going to go ahead and go with the procedures we've been using all along. On the lunar orbit stuff, we've been looking it over and we got several guys—Jack Schmitt and company in the back room—looking at what effect your windows have. And, basically, it looks like there's two options that will make an impact on that REV 2. One of the options, of course, will be just to have you and Jim change seats and let Jim look out and get his SAM that way, and another option will be to roll the bird over and let Jim point the optics as far forward as he can get them and take his SAM through the telescope. And I guess we'd like to have any thoughts that you folks have on what you think you can do with the windows; if you have anything, we'd like to factor it into our thinking and go ahead and firm up our plans as early as we can. We'd like not to put it off so that we have none of these things to do after midcourse. You folks can probably tell us more about what you can do with those windows. So if you have any thoughts, go ahead and sing out with them, and we'll see what we can do about factoring that in.
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Bill Anders (LMP)
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Okay. With reference to the midcourse, I think that's generally agreed upon, that we do it like we've always been doing it. Now, with respect to the windows, center windows, essentially, are unusable. The two side windows are—may be all right for observation, and the problem with the rendezvous windows is that they're pretty small. And I just thought we'd have to play the window game by ear almost. Not really sure what capability we're going to have. And we'll give you some more thoughts on this later.
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Ken Mattingly (CAPCOM)
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Okay. How about exercising the idea of rolling over and having Jim do his polarization through the telescope because if we have to change attitudes we'd like to go ahead and start thinking about what effects that'll have on such things as antenna orientation and all that.
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Ken Mattingly (CAPCOM)
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Okay. Apollo 8, we'd like to update your CMC clock. This is not to correct errors which we have now but just to make up for some effects that we're going to have in lunar orbit. And what we'd like to have you do is go to P00 and ACCEPT and let us update the clock time.
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Ken Mattingly (CAPCOM)
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Okay. We'd like to update CMC. The order that we'll update will be the LM state vector, the CSM state vector, and then the external DELTA-V and the REFSMMAT. So any time you're free with it, we can have P00 in ACCEPT; we'll go ahead with it.
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Bill Anders (LMP)
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I understand you're going to update LM state vector, CSM state vector, and external DELTA-V and the REFSMMAT.
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Ken Mattingly (CAPCOM)
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Okay, thank you. And just a minute, I'll be with you on the PAD's. They'll be three maneuver PAD's, one of them MCC 4.
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Ken Mattingly (CAPCOM)
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Alright. Midcourse correction number 4: the RCS/G&N 62888 November Alfa November Alfa 060:59:54.30 minus 00012, minus 00011, plus 00012 031 008 323 November Alfa, plus 00618 00020 011 00020 17 2965 308 Alpha-Centauri, up 073, left 34. For the stars, it will be the primary Sirius, secondary Rigel, 129 155 010. Over.
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Bill Anders (LMP)
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Roger. MCC 4, RCS/G&N 62888 NA, NA 060:59:54.30, minus 00012, minus 00011, plus 00012 031 008 323, NA. Are you with me so far?
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Bill Anders (LMP)
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Plus 00618 00020 011 00020 17 2965 308 Alpha-Centauri, up 073, left 34, primary Sirius, secondary Rigel 129 155 010. Over.
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Ken Mattingly (CAPCOM)
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Okay. I've got one for pericynthian plus 2, and it's a minimum DELTA-V solution.
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Ken Mattingly (CAPCOM)
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Okay. That's pericynthian plus 2. RCS/G&N 62871 November Alfa, and stand by one. Okay. We'll pick up with a pitch trim and yaw trim of not applicable; time 071:07:22.16, minus 00468, plus 00254, plus 00181 173 101 027 November Alfa plus 00187 00563 515 00563 01 3169 198 044, down 044, left 45, plus 1100, minus 02500 12967 36198 137:01:53, primary Sirius, secondary Rigel 129:155:010, four jets plus X. This assumes execution of midcourse correction number 4 and uses the same alignment as midcourse correction 4. over.
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Bill Anders (LMP)
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Roger. Pericynthian plus 2, minimum DELTA-V RCS/G&N 62871, NA, NA. 071:07:22.16, minus 00468, plus 00254, plus 00181 173 101 027, NA, plus 00187 00563 515 00563 01 3169 198 044, down 044, left 45, plus 1100, minus 02500 12967 36198 137:01:53, primary Sirius, secondary Rigel, 1.29 155 010, four jets plus X, assumes MCC 4 with same alignment. Over.
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Bill Anders (LMP)
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Houston, Apollo 8. Confirm that boresight star and SPA are exactly the same number and not typographical error.
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Ken Mattingly (CAPCOM)
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Roger, Apollo 8. They are checking that. Apollo 8, the computer is yours. You can take it back.
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Ken Mattingly (CAPCOM)
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I do now loud and clear. I've got one more PAD for you, and the confirmation that those boresight star number and the pitch angle are correct at 44.
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Ken Mattingly (CAPCOM)
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Roger. And we are ready to do our P52 preferred alignment at this time. Are you ready?
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Ken Mattingly (CAPCOM)
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Okay. This is a pericynthian plus 2 for a fast return. This will be SPS/G&N 62871, minus 161, plus 129 071:06:42.07, plus 45224, minus 06216, minus 18712 001 287 351, November Alfa plus 00187 49336 603 49118 112 038 296, earth up 010, right 37, plus 1475, plus 06500 13239 36913 106:09:23; primary star Sirius, secondary Rigel 129 155 010, no ullage, assumes execution of midcourse correction 4 and uses the same alignment. The time for MCC 5 for GERU determination—that's Golf Echo Romeo Uniform—this will be a GET of 83:02; use P37 NC-4, steps 1 through 10 and NC-8 steps 3 and 4. I say again, use P37 November Charlie 4 steps 1 through 10 and November Charlie steps 3 and 4; velocity 400K for corridor control chart 36507. Over.
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Bill Anders (LMP)
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Okay, Ken. Pericynthian plus 2, fast return SPS/G&N 62871, minus 161, plus 129 071:06:42.07, plus 45224, minus 06216, minus 18712 001 28 603 49118 112 038 296 earth up 010, right 37, plus 1475, plus 06400 1323 936 913 106:09:23, primary Sirius, secondary Rigel 129 155 010, no ullage, assume MCC 4 same alignment, MCC 5 GERU determination GET 83:02 P37 NC-4 0 through 10 and copy NC-8, 3, and 4. Velocity at 400K 36507. Over.
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Ken Mattingly (CAPCOM)
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Okay, Apollo 8. That's correct with one exception: in the PAD format under longitude NOUN 61, that is plus 06500. Over.
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Ken Mattingly (CAPCOM)
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Apollo 8, let's go back and confirm on your minimum DELTA-V pericynthian plus 2 that the pitch column is 101; that's the fifth block down.
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Ken Mattingly (CAPCOM)
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Okay. Thank you very much. And the item we have left to go is that we'd like to get with you on how you want to handle the problem with windows on REV 2.
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Bill Anders (LMP)
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Houston, this is Apollo 8. We want you to come up with a suggested redline for RCS usage during lunar orbit, also, please.
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Bill Anders (LMP)
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And for your information, Houston, when the sun is shining on window 5, it's pretty hazy; window number 1 is a little bit better.
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Bill Anders (LMP)
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Roger. We tried to get this realignment. We need—Do you have a maneuver to get us some gimbal angles so we don't get gimbal lock when we get the preferred alignment?
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Jim Lovell (CMP)
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Houston, on our present position, we'll go into gimbal lock. I figure to try and get the preferred angle.
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Jim Lovell (CMP)
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In running through PROGRAM 52, we got a PROGRAM ALARM 401 which would indicate that if we continued, we'd drive it into gimbal lock.
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Jim Lovell (CMP)
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Houston, we're doing an OPTION 1 like OPTION 3. We keep getting a 401 ALARM, which says desired RCTU yields gimbal lock.
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Ken Mattingly (CAPCOM)
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Apollo 8, Houston. It appears that you have maneuvered around the gimbal locks system.
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Jim Lovell (CMP)
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Well, we stopped and went through coarse align of P52 and then we got fine align, and pick-a-pair, pick Capella, but she drove and didn't get to any place. I didn't pick Capella, and I can't recognize any out there right now. Can I re-cycle here and go back and pick a pair?
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Jim Lovell (CMP)
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My plan is to go back into re-enter PROGRAM 52—well, it did not drive to Capella, and I can't recognize it in the scanning telescope. My plan is to go back into recall P52.
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Jim Lovell (CMP)
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Okay. I now have Aldebaran in the scanning telescope; I might want to call that one instead of Capella.
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Frank Borman (CDR)
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Houston, Apollo 8. We came up with an unacceptable difference in our stars; we're going to have to recycle.
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Ken Mattingly (CAPCOM)
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Apollo 8, Houston. In the event that we don't get this midcourse in, we'll still go for an LOI, and it's been suggested you might try Mirfak which is OCTO 10.
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Ken Mattingly (CAPCOM)
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Apollo 8, our data is down right now; appreciate making sure you have the tape recorder on.
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Ken Mattingly (CAPCOM)
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That's affirmative. And would you give us another hack on your countdown time?
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Jim Lovell (CMP)
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Roger. Burn on time, angles nominal, burn time about 12 seconds, 0.2 feet per second after the DELTA-VC, 0 in VGX. We have transferred the results of the burn over to the left slot VERB 66.
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Ken Mattingly (CAPCOM)
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Roger. And got a couple of items that I would like to clean up. We will get you an RCS budget. We've got one redline now; we are trying to get some firmer numbers for you, and we will have those in a little bit. Right now your PTC usage is right on the flight plan line, so everything looks pretty good there. We want to get a crew status report from you. We would like to firm up the REV 2 flight plan idea; and sometime at your convenience, we would like to take a reading of the PRD for the commander and CMP and then have you swap them. We are trying to isolate the—what the possible reason is for the discrepancies or the disparity in the two readings.
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Jim Lovell (CMP)
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Stand by, Houston. Alright, Houston. Looks like we didn't record just the Z. We recorded DELTA-VC, which is minus 0.2.
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Ken Mattingly (CAPCOM)
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Roger. Understand that was DELTA-VC was minus 0.2. I copied DELTA-VZ; ZULU is 0.2. Is that incorrect?
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Bill Anders (LMP)
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We can get it. We have it on the tape, Houston, whenever you want to dump it.
Expand selection down Contract selection up -
Bill Anders (LMP)
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Okay, Houston, for the PRD's: CDR is 0.07, CMP is 0.64, LMP is 0.80. Note that the CMP's hasn't changed since we started and the commander's hasn't changed much. We have swapped PRD's; commander has LMP, CMP has commander's, and LMP has CMP's PRD. Over.
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Jim Lovell (CMP)
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Roger. Crew status report as follows: water, the commander has about 50 clicks so far today; CMP 43; and the LMP is 44. We've eaten two meals so far today. Day 3 meal A and B; consumed most of it except for the hard hard bite, which no one cares for. Pudding was outstanding. We're at a gain of pericynthian now of plus 63 miles. Commander and CMP have had a rest period just before the midcourse 4 of about 2 hours.
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Jim Lovell (CMP)
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We're at a gain of about 20 500 miles from the moon at 61:14. How does that agree with what you figure?
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Ken Mattingly (CAPCOM)
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Apollo 8, Houston. Looks like you're on the secondary loop. We would like to run that for about 5 minutes.
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Frank Borman (CDR)
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Getting any data now Houston? Guess you are. Okay. See you stopped my tape then. I've been running for about 3 extra minutes here to record the check.
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Frank Borman (CDR)
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Give me a call when you're satisfied with the secondary loop; it's stabilized out here pretty well.
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Ken Mattingly (CAPCOM)
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Wilco, and you might tell Jim that our RTCC is about 4 miles off; we had 20 496.
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Frank Borman (CDR)
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Houston, Apollo 8. Do you show battery B as voltage dropped some from the postcharge value? Over.
Spoken on Dec. 24, 1968, 12:33 a.m. UTC (55 years, 10 months ago). Link to this transcript range is: Tweet
