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Jack Swigert (CMP)
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Okay. I just can't, right—I just can't read my writing, ESSENTIAL INSTRUMENTATION POWER MAIN B, closed.
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Joe Kerwin (CAPCOM)
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Roger. The word we have is that you can't make a VERB 49 maneuver to the LM jettison attitude because those are FDAI angles we gave you, they don't correspond to the gimbal angles for the load; it'll have to be a manual maneuver. Over.
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Joe Kerwin (CAPCOM)
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Roger. We're looking at LM current, to see if Jack has started his preheat, and we haven't seen it yet. Is he doing okay down there?
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Jim Lovell (CDR)
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Houston, Jack said he's already started it, and he said that in 1 more minute, he'll be up to 20 minutes.
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Jim Lovell (CDR)
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He says that he had a battery A voltage drop of 2 volts, and he'll try to look at the test meter for you right now.
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Joe Kerwin (CAPCOM)
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Stand by 1 on that, Jim. That's affirmative, Jim; it looks like we are seeing one now.
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Jim Lovell (CDR)
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Okay, Houston. I finished up the maneuvers, the AUTO maneuver in 41, but only roll and yaw needles seem to be offset. Pitch is okay.
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Joe Kerwin (CAPCOM)
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Okay, Jim. We copy. Stand by. Aquarius, Houston. We recommend PGNS MODE CONTROL to ATT HOLD. Save a little gas and stand by on the error needles.
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Joe Kerwin (CAPCOM)
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Aquarius, Houston. Did you call?
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Fred Haise (LMP)
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Roger, Joe. Figured, if we're going to do this burn in PGNS now, I ought to give you an update on the contingency book pages 32, 33, and 34, because the last time we went through this portion, we were burning it in ACS.
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Joe Kerwin (CAPCOM)
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Okay, Fred. Stand by. We've been talking about possibly having you do it in ACS. We recommend at this time that you do an ACS to PGNS aline, the 400 plus 3 procedure only. Over.
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Joe Kerwin (CAPCOM)
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Roger. We recommend that you perform this burn in AGS, as you did the last midcourse manuever; we think it will save gas. Over.
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Fred Haise (LMP)
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And, Joe, Jack just handed me some injector temperatures, if you want to read these on … so I can plug them in.
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Fred Haise (LMP)
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Okay. 5 Charlie, 14.0; 5 Dogs, 3.7; 6 Able, 3.5; 6 Bravo, 4.1; 6 Charlie, 4.2; 6 Delta, 3.8.
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Joe Kerwin (CAPCOM)
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Okay, Jim. Our recommendation on this burn is that you maneuver to the burn attitude, in PGNS MIN IMPULSE, then do a body-axis aline, 400 plus 5, followed by 400 plus 0, and then do the burn in AGS. Over.
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Jim Lovell (CDR)
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Okay. Now we're spinning it with the PGNS, what you gave us for a PGNS attitude. Is this the wrong one? Do you want me to just to aline up the Earth as I did before in the last midcourse?
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Joe Kerwin (CAPCOM)
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No. We don't want you to do that. Read me your FDAI angles, and let's compare them with what we have down here.
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Jim Lovell (CDR)
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Okay. You're looking at them in the DSKY. I've got roll of 8.47; pitch of about 0.51; and yaw looking at about 3.750.
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Joe Kerwin (CAPCOM)
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Okay, Jim. Those are very close—I guess all you need to do is trim them up a bit.
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Joe Kerwin (CAPCOM)
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Okay, Jim. For fuel conservation, we'd prefer you to trim it up MIN IMPULSE, and there's really very little trim required; and then go ahead and do it AGS. We're on the expected fuel usage, but we're just being old ladies about it.
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Jim Lovell (CDR)
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Okay. Understand. My only question, Joe, is the fact that both the roll and the yaw needles did not go to null when I did an AUTO maneuver. I'd tried to go manually to the attitude; and then went to AUTO, but the roll and the yaw do not come in at all.
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Jim Lovell (CDR)
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And, Houston, Aquarius. I'm not sure that if I follow and null the needles, that will be the proper attitude.
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Joe Kerwin (CAPCOM)
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Okay. Stand by 1, Jim. We're talking about it. It's going to be very close; in any event, close enough.
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Joe Kerwin (CAPCOM)
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And, Jim, just for your information, I have the entry pad. I have the landing area weather summary, which you probably don't even have to copy, but which I'll read up to you when you're ready; and some stars for Jack that I'm holding for him for later on.
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Fred Haise (LMP)
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And, Joe, Jack says all the injector temperatures, he just checked them again, and they're all over 3.9 —
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Joe Kerwin (CAPCOM)
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You can tell him that it's looking good to us. They were even happy with the previous ones.
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Jim Lovell (CDR)
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And, my only question, Houston, is do you want me to null the PGNS needle manually?
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Fred Haise (LMP)
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Yes. I guess the basic question is comparing the balls here and out the window it doesn't look too unreasonable, and I guess Jim says the COAS is yawed and roll slightly off from what he might eyeball; but yet, the FDAI air needles for PGNS are showing a full scale left in roll and full scale left in yaw. …
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Fred Haise (LMP)
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Yes. It appears if we track those we, obviously, aren't going to be on the attitude that we burned the last midcourse.
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Joe Kerwin (CAPCOM)
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Okay. Well, this attitude we passed you is not quite alined to the terminator, and stand by on this.
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Joe Kerwin (CAPCOM)
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Oh, we're getting there, Jim. We're—we're all agreed that you're almost, but not quite, in the proper attitude, and we're just trying to get you one firm recommendation on how to proceed from here.
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Jim Lovell (CDR)
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Okay. I have nulled the null—roll needle and the pitch needle now and I'm yawed—rolled left now. I'm rolled left about 9 degrees.
Spoken on April 17, 1970, 12:17 p.m. UTC (54 years, 6 months ago). Link to this transcript range is: Tweet
