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Jerry Carr (CAPCOM)
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Roger. Got some information for you on this PTC that we'll be going to right after this next P23 exercise. We'd like you this time to try the nose north attitude, that's pitch of 180, and a yaw of 315, and also we'd like to give another look at this mode free type of PTC and we think maybe we'll get a little bit of spin stabilization if we try it at 0.3 degrees per second on the roll rate rather than 0.1. So if you figure on doing that at 124:30 we'll see what kind of information we can get out of it.
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Frank Borman (CDR)
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Okay. You know what I think of that, don't you? I'll be happy to do it, but I think it's playing games.
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Jerry Carr (CAPCOM)
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Roger, Frank, you're burning right now 1.4 pounds per hour with attitude hold in pitch and yaw. We're kind of interested to see if 0.3 degrees per second will reduce your RCS usage due to spin stabilization.
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Frank Borman (CDR)
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Jerry, I'm a little concerned about the temperature. We're getting kind of warm in here, and also the evaporator outlet temperature is up around 45 degrees. Do you have any trend that we're getting less efficient operation of the radiators?
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Jerry Carr (CAPCOM)
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Frank, EECOM says everything looks nominal down here. You might try a change in your cabin temperature heat exchanger there.
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Frank Borman (CDR)
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No, we don't have the fans on, but what we have done is put up a window shade. That seems to help it. We've been getting a lot more sun in the cabin this way.
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Frank Borman (CDR)
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Roger. I don't mind playing games because, you guys have been very nice in the five and a half days. If you want to play games in the next half hour, we'll play.
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Frank Borman (CDR)
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Jim is trying this set with the eye relief optics so we can give you some information on that.
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Frank Borman (CDR)
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I think it would be very difficult to extrapolate anything that you are getting out of this bit business to a LM-command module combination, because the spacecraft handles quit a bit different just with the change of fuel load, including the difference in drifting off and roll.
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Jerry Carr (CAPCOM)
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Roger, Frank. We just got finished discussing that, too. We agree with your point of view on that one. I think this is more of a curiosity thing than anything at all.
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Jim Lovell (CMP)
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I think it's fine. No sweat. We don't have anything else to do here for about another 10 hours.
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Jim Lovell (CMP)
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Jerry, what I'm kind of curious about is the fuel usage. Now with P23 and what we were doing, we have a lot more fuel.
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Jerry Carr (CAPCOM)
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Jim, we'll take a look at that fuel usage bit. Right now, the trend looks like it is getting better as we would expect with a lighter weight.
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Frank Borman (CDR)
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We really—we shouldn't complain about the fuel usage on that SPS engine though, because we're sure getting a lot of miles per gallon out of it.
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Frank Borman (CDR)
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Yes, we don't have any TCP in it, or what is that, TCP? Yes. That's the problem. If we'd had that, we would have probably used only half the fuel.
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Frank Borman (CDR)
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If you will get the people to spread out one of those banners around the target area, we'll try to break it, you know, and coast through it.
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Jerry Carr (CAPCOM)
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Okay. We'll call some of the paper companies and see if they can find a roll big enough.
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Frank Borman (CDR)
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Bill said to call Valerie and have her to rewind the tape recorder—his tape recorder at home.
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Jerry Carr (CAPCOM)
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I hate to tell you this, Frank, because Jim probably won't even be able to wear his COMM carrier anymore, but that last set of marks put your state vector right on top of the MSFN state vector.
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Jerry Carr (CAPCOM)
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Apollo 8, Houston. Also, on the flight plan for 124:30, we would like for you to run an O2 purge on the fuel cells.
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Spoken on Dec. 26, 1968, 4:19 p.m. UTC (55 years, 10 months ago). Link to this transcript range is: Tweet
