Spacelog Apollo 8

Roger.

Apollo 8, Houston. The CM vector is in; working on the LM now. Over.

Roger.

Apollo 8, Houston. We'd like a cryo fan cycle when you can. Over.

Roger. We're starting that now.

Roger.

Apollo 8, Houston. The LM vector is loaded. Target load going in now.

Roger.

Apollo 8, Houston.

Go ahead, Houston.

Apollo 8, Houston. The update is complete. You can have the computer, TLM to BLOCK. Be advised the erasable dump checks out okay.

Roger. Thank you. We have the computer; we're in BLOCK.

Roger.

Apollo 8, this is Houston. We'd like to make at this time a down-voice backup COMM check. Set the S-band AUX tape to DOWN-VOICE BACKUP, TLM inputs PCM, LOW. Over.

Roger, Houston. And we'd like to have a check of our DSE on low bit rate for voicing.

Roger. Understand you want the DSE check on low bit rate for voice.

That's affirmative, and we'll give it about 10 minutes now or about 5 minutes, then you can check it out.

Roger.

Houston, Apollo 8.

Apollo 8, Houston. Go.

As a matter of interest, we have as yet to see the moon.

Roger.

Apollo 8, Houston. What else are you seeing?

Nothing. It's like being on the inside of a submarine.

Roger.

Houston, we just did a PROGRAM 21, and we show a pericynthian of plus 74.9 miles on the state vector you just uploaded.

Roger. Plus 74.9.

Roger.

Apollo 8, this is Houston. Reading your down-voice backup loud and clear. Request you keep those switches where they are for the remainder of the pass. Over.

Roger. And we're rewinding the tape recorder for a dump for a DSE voice check.

Roger, 8.

It's rewound; are you ready to dump?

We'd like to go to S-band AUX tape briefly so you can dump the tape while we're on the high gain. We've only got about 30 seconds worth.

Apollo 8, Houston. Roger. We'll do that from the ground. Over.

Roger. Switch configuration is down-voice backup and stop. You got it.

Roger. We will dump it.

You won't need to dump more than a minute's worth.

Roger.

Apollo 8, Houston. Over.

Apollo 8, Houston.

Roger. This is Apollo 8.

Roger. That pericynthian you read out is for ignition. We read that as 75 miles; your true pericynthian is 64 miles at 69:10:35. Over.

Roger.

Apollo 8, this is Houston with an addition to your TEI 1 maneuver PAD. Over.

Stand by a minute.

Go ahead.

Roger. Under remarks, add the following: “requires minus MA procedure”. Over.

Apollo 8, Houston. You are riding the best one we can find around.

Say again.

You are riding the best bird we can find. Over.

Thank you.

The cryo's have been stirred, Houston.

Roger, Bill.

Apollo 8, Houston. We just saw an MC&W light.

We just tested the caution and warning.

Roger.

That's keeping alert.

Apollo 8, Houston. We're 42 minutes from LOS, and we caught another caution and warning light.

It was the high-gain antenna going out of limits.

Apollo 8, Houston. Voice quality on the DSE dump is very good. The DSE is yours. Over.

Apollo 8, Houston. COMM check.

Read you loud and clear, Houston.

Houston, Apollo 8. Over.

Apollo 8, Houston. Go.

Roger. We are ready to activate the primary water boiler.

Roger. Copy.

We got a GO?

Roger. GO.

Okay. Steam pressure going to AUTO; H₂ flow going to AUTO.

Apollo 8, Houston. We are on low bit rate. We won't see your steam pressure; your RAD OUT is 33. Over.

Roger. We're below the boiling limit, and steam pressure is steady at 0.15.

Roger.

Apollo 8, this is Houston. We have got our lunar map up and ready to go.

Houston, Apollo 8. Over.

Apollo 8, Houston. Go.

Roger. We're showing a fuel pressure of 167, in AUX of 163. Wondering, do you think there's a possibility of us having a transient caution warning trip on fuel AUX pressure at the beginning of the burn that would correct itself nominally as we had a chance to pressurize? Over.

Roger. Understand; will check. Stand by.

Roger.

Apollo 8, Houston.

Go ahead.

Apollo 8, this is Houston. We've been reading fuel 173, AUX 167, holding steady for a long period of time. We expect no caution and warning trip. Over.

Apollo 8, Houston. Nine minutes 30 seconds from LOS.

Roger. Understand.

Apollo 8, Houston.

Go ahead.

Roger. In about 10 seconds, we'll have you 19 minutes from ignition. Five, four, three, two, one -

Apollo 8, Houston. Five minutes LOS, all systems GO. Over.