Ken Mattingly (CAPCOM)

Okay. Fine; thank you very much.

Bill Anders (LMP)

We are going to do—Houston—future maneuvers for P53 in a lower—slower mode of AUTO maneuver. Essentially, we are going to load the DAP with 11101 to save fuel.

Ken Mattingly (CAPCOM)

Roger. That will be a 11101 DAP load.

Bill Anders (LMP)

Roger. We are going to try to save fuel that way.

Bill Anders (LMP)

With respect to the window, Houston: the windows 1 and 5 have moderate haze on them. Satisfactory for visual observation, but possibly not for photography. Windows 2 and 4 are clear. Window 3 is almost opaque. Over.

Bill Anders (LMP)

And how is battery B looking to you?

Ken Mattingly (CAPCOM)

Apollo 8, Houston. It looks like it may take another 6 hours on this battery B charge. It turns out that the charge rate is less than what we are getting on our ground curves, but it is still above the Apollo 7 curves, and it looks like it is going along now in good shape. And I would like to have verification that the timeline leading up to the midcourse correction was satisfactory from your point of view.

Bill Anders (LMP)

Roger. Seemed quite satisfactory.

Ken Mattingly (CAPCOM)

Okay. Thank you. And we will stay off the loop until you give us a call.

Bill Anders (LMP)

Roger. You don't bother us, but our replies make a lot of noise.

Ken Mattingly (CAPCOM)

Okay.

No contact for 1:03:47
Bill Anders (LMP)

Houston. Apollo 8. How do you read?

Ken Mattingly (CAPCOM)

Apollo 8, Houston. Go ahead.

Ken Mattingly (CAPCOM)

Apollo 8, Houston. You're very weak. You got the proper OMNI?

Bill Anders (LMP)

Houston. Apollo. How do you read?

Ken Mattingly (CAPCOM)

Loud and clear, Bill. Go ahead.

Bill Anders (LMP)

Okay. I'm just wondering how your tracking's doing.

Ken Mattingly (CAPCOM)

Okay. We're still tracking you. We don't have any firm solutions, yet.

Bill Anders (LMP)

Okay. Things looking nominal up here. How about down there?

Ken Mattingly (CAPCOM)

Okay. The systems basically look good, Bill. We're going to be coming up on a cryo fan cycle period in another few minutes, and you can go ahead and do that when you get ready.

Ken Mattingly (CAPCOM)

And I guess we picked up some suspicions about the fuel cell 2 radiator out temp. How does that compare on board?

Bill Anders (LMP)

Roger. We're showing RAD OUT temp on fuel cell 2 would be about 90 degrees, and on 1 and 3 it would be slightly lower—maybe 75 or 80 degrees. About an hour ago you wondered about fuel cells performance; it looks like 1 and 2 are lower in performance than 3. Over.

Ken Mattingly (CAPCOM)

Roger. We show the same numbers on your outlet temperatures and thought that was a sensor failure. We've been watching the thing and we'll keep you advised of anything we see.

Ken Mattingly (CAPCOM)

And on the performance, you're right—they are not quite the same, 1 and 2 are a little bit lower but all of these are sitting within the ballpark.

Bill Anders (LMP)

Roger. Fuel cell 1 has shown slightly a proportionately higher H2 flow than O2 flow all day long.

Bill Anders (LMP)

I'm showing 0.062 H2 and 0.48 O2.

Ken Mattingly (CAPCOM)

Roger. We'll take some CAL curves on those.

Ken Mattingly (CAPCOM)

Okay. These things look reasonable to me and we'll keep looking at them. Our RAD OUT shows about 0.43 as opposed to your 0.48 on the oxygen, and we'll keep an eye on the CAL curves and just sort of watch it for you.

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Spoken on Dec. 22, 1968, 3:41 a.m. UTC (55 years, 3 months ago). Link to this transcript range is: Tweet

Ken Mattingly (CAPCOM)

If you'd like to set up some kind of a COMM check or specified time like every 30 minutes or so on these quiet periods, that would be okay with us. Might help to let us know that we're still in business.

Bill Anders (LMP)

All right. Just give me a call every now and then.

Ken Mattingly (CAPCOM)

Apollo 8, Houston. Sometime when it's convenient, get your BIOMED switch over to the right, and you don't need to answer; just pass it up to you.

Ken Mattingly (CAPCOM)

Apollo 8, Houston. How about a COMM check, and did you get that fuel cell purge—correction, the cryo fans ON?

Bill Anders (LMP)

Roger. We've had the cryo fans ON each for about 3 or 4 minutes.

Ken Mattingly (CAPCOM)

Okay. Real good. We weren't real sure that's what we were watching, and you're coming through loud and clear.

Jim Lovell (CMP)

Go ahead, Houston. Apollo 8 here.

Ken Mattingly (CAPCOM)

Okay, Jim. Got an update here to the flight plan. You've got the 16:55 star visibility check, and what we've got on that looks like Navi is still our star, and the numbers associated with that are roll 102.6, pitch 328.9, yaw 346.3. That gives you a shaft and trunnion of zero. And if you think you can—if you think you can do something with this, why we would like to go ahead and give it a try and see if we can either verify it or maybe we'll both learn something if we verify it if you can do it with Navi.

Jim Lovell (CMP)

Houston, Apollo 8. Over.