Spacelog Apollo 11

Roger, 11. I guess in keeping the cups of coffee score, why you get that one.

Well—Okay—Well, this morning, let's just see how close it comes to being parallel to the M-line. Before we started marking for the first time, it appeared that the computation of—of those three angles was somewhat off, and that I was wasting a lot of gas by going to those three angles and then having to make large attitude changes after that to get the M-line parallel. In some cases it appeared to be just an accepted attitude required, and you all said that it wasn't needed. So I was marking in some cases with the M-line not parallel. I thought perhaps you had some processor for computing that offset and making sense out of that data, but as far as I know, we've got to have the M-line parallel to the horizon.

Roger, 11. We don't have that capability. We do require that the M-line be parallel to the horizon in order to get a good mark. We feel that possibly the—the state vector information that you were using for your maneuver basis yesterday may have needed to be updated a little. And if you'll standby a second, we'll give you an evaluation of what we feel you'll get today by the AUTO maneuver.

Houston, Apollo 11. Over.

Go ahead, 11.

Roger. I'm getting ready to do an O₂ Fuel cell purge. Do you have any particulars on this? And I assume you want these one at a time, or can I triple up? Over.

We'd like them one at a time, and stand by. I don't think we have any sequence. You can do them in any order you want.

Okay.

Houston, Apollo 11. You want to look at these NOUN 93's before I proceed on?

Yes, please. Stand by a second.

Okay.

11, this is Houston. On our TM, here, we're only seeing values in two registers. Can you read us out the contents of register 3, please?

Register 3: minus three balls 24.

Roger. Minus three balls 24. And you can go ahead and proceed.

Okay. Proceeding at this time.

11, Houston. After you've completed P52, we'd like to uplink you a new state vector so we can start out clean on this P23. Over.

Okay.

Houston, are you observing the higher O₂ flow on fuel cell 3?

Houston, Apollo 11. It's triggered the MASTER ALARM three times, now. There goes number 4. It goes up to about 1.4, then oscillates back down to about 1.1. Over.

Roger. We saw them 1.3 now on TM. Stand by a second.

And we're in P00, now, for a state vector.

Roger. Give us ACCEPT, please.

Roger. Done.

11, Houston. On your O₂ flow, fuel cell 3: apparently it was flowing a little higher than the other two during purge, but the flow rate is acceptable. Over.

Roger, It seems to be flowing a little bit more, and actually putting out more current than the other two, also. Over.

Roger. We copy.

11, this is Houston. We've completed the uplink; the computer is yours; you can go back to BLOCK.

Okay. Thank you.

Go ahead, 11.

Houston, 11. I don't believe we were calling you right then,

Houston, Apollo 11.

Apollo 11, this is Houston. Go ahead.

Roger. I'm in a good attitude here to do—I have in the sextant this last P52 star, star 37. Is that all right for the optics calibration to save some gas, or do you want to go over to star 40?

Star 37 will be fine for the optics calibration. And we haven't noticed a VERB 66, yet, after our state vector uplink. Over.

Okay.

When you move into P23, we recommend that you use the CMC-computed angles for your AUTO maneuver and see how that works out. If it doesn't bring you up with the M-line parallel to the horizon to the substellar point, we will see if we can get you some ground-computed angles. I guess the big thing here is to make sure that the M-line is parallel to substellar points so we can get a good angular measurement. Over.

Yes. I believe.

Houston, Apollo 11. Marking on this star, I get a NOUN 87 twice in a row of five balls, so that's sufficient for a count.

That's certainly very sufficient.

Okay. Now I want to go to P00, and I am going to take your three angles and do a verify of 49 maneuver to your substellar point. Okay?

Okay. We recommend that for the first star, if we gave you a new state vector, we'd like to try the CMC-computed angles for your AUTO maneuver.

Okay.

And have you hit PROCEED on this display to enter the zero?

Not yet.

Okay.

11, Houston. Over the past 2 hours we have seen a slight continuing increase in partial pressure Of CO₂. Have you in fact changed the CO₂ canister yet this morning? We don't need to do it right now; we'd just like to confirm it on our instrumentation—is in good shape. Over.