Buzz Aldrin (LMP)

Okay, I'm ready to copy.

Ronald Evans (CAPCOM)

Roger. Entry PAD: area is the mid Pacific, roll 000, 152, 001, GET 194 46 06, 267, latitude plus 1332, minus 16917, 064, 36194, 649, range to go 14045, 36275, 195 03 06, 00 28, DL max 154, 084, 22400, 18000, D0 400, 02 13, 00 17, 03 51, 09 02, sextant star 45 0189, 277, boresight star, none available, lift vector up. Comments: GDC align, Vega and Deneb, roll 078, pitch 223, yaw 340. Additional comments: Use nonexit EMS pattern, EI minus 30, horizon check GET 194 33 06. Pitch 298. You'll get P65, but no P66. Additional note: Initial bank angle in P67 may not be full lift. Apollo 11, Houston. Read back.

Buzz Aldrin (LMP)

Okay, Ron, For MIDPAC: 000, 152, 001, 194, 46 06, 267, plus 1332, minus 16917, 064, 36194, 649, 14045, 36275, 195 03 06, 0028, 154, 084, 2240, 180, 400, 02 13, 00 17, 03 51, 09 02, 45, 0189, 277, none available, lift vector up, GDC align, Vega and Deneb, roll 078, pitch 223, yaw 340. Use nonexit EMS. EI minus 30, horizon check 194 33 06, pitch 298. Initial bank angle in P67 may not be full lift, and we will get P65 but no P66.

Ronald Evans (CAPCOM)

Apollo 11, Houston. Roger. On your GDC align pitch, it should be 233, 233 in the pitch. Over.

Ronald Evans (CAPCOM)

Also your DL and MAX and MIN, I'm sure. are 22 400 and 18 000. Over.

Ronald Evans (CAPCOM)

Okay. If you'll dig out your entry checklist there on page E6 1, I'll update your RETRO times there for the various altitudes. Over.

Ronald Evans (CAPCOM)

Okay. On page E6 1, your RRT is 07 20, your 50K is 08 16; 40K is 08 30; your 24K is 09 02; and your 10K is 09 51. Over.

Buzz Aldrin (LMP)

Okay. RRT, 07 20, 50 000, 08 16. That's—07 20 is—is the time of steam pressure peg from RRT; and 40 000, 08 30; 24 000, 09 02; 10 000, 09 51.

Ronald Evans (CAPCOM)

11, Houston. You started out right, and then the numbers you read back were correct; but I didn't get your comment in between there.

Buzz Aldrin (LMP)

I assume that—all I wanted to know is that first time, 07 20, that's the time of steam pressure peg. Right?

Michael Collins (CMP)

Houston, Apollo 11. Ron, I'm ready to copy your message about the constant drag level.

Ronald Evans (CAPCOM)

Okay, Mike. Of course, this is in the event the G&N and the EMS quits and you have to fly the constant g; and what we're trying to do is extend the constant g range from 1100 to 1500 miles. We've run this procedure in the simulator, and it works fine. Basically, I'll go through it—just go through it, and then if you have any questions come back. But it's the same lift vector up until MAX g, and then lift vector down, and then modulate the lift vector until g dot goes to zero. Okay. This procedure is essentially the same so far. And then hold g dot zero until you pass the RETRO elapsed time of V circular; and then after you pass this RETRO elapsed time of V circular, roll to a gimbal angle of 45 degrees, and then hold this constant bank angle of 45 degrees until you come to the RETRO elapsed time of drogues. Over.

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Spoken on July 24, 1969, 1:30 p.m. UTC (50 years, 3 months ago). Link to this transcript range is: Tweet

Michael Collins (CMP)

Okay. It sounds straightforward enough. Understand constant g backup backup procedure, lift vector up until MAX g and then lift vector down; then modulate until bank angle until g dot equals zero. Maintain g dot equals zero until subcircular, then roll 45 degrees and hold until drogue time. Over.

Ronald Evans (CAPCOM)

Okay. That's mighty fine, Mike. That's correct.

No contact for 1:01:50
Michael Collins (CMP)

This entry time line is my kind of time line. Nice and slow.

Ronald Evans (CAPCOM)

Okay, 11. Houston. Roger. It sure is. EECOMM is anxiously awaiting his big moment here for the logic sequence check whenever you're ready.

Neil Armstrong (CDR)

Okay. We'll be ready for that in just a flash.

Jim Lovell

This is Jim, Mike. Backup crew is still standing by. I just want to remind you that the most difficult part of your mission is going to be after recovery.

Michael Collins (CMP)

Well, we're looking forward to all parts of it.

Jim Lovell

Please don't sneeze.

Michael Collins (CMP)

The Earth is really getting bigger up here and, of course, we see a crescent.

Michael Collins (CMP)

We've been taking pictures and we have four exposures to go, and we'll take those and then pack the camera.

Michael Collins (CMP)

Houston, Apollo 11. We're ready for the logic check whenever you are. We're standing by to arm the logic. We've got ELS logic on, ELS AUTO, and all the circuit breakers in.

Ronald Evans (CAPCOM)

Apollo 11, Houston. Roger. You can press on with the SECS logic.

Michael Collins (CMP)

Okay. Logic 1 coming on.

Ronald Evans (CAPCOM)

Apollo 11, Houston. Logic checks good. You're GO for PYRO ARM.

Buzz Aldrin (LMP)

Houston, Apollo 11 has got VHF A Simplex on whenever you want to make a COMM check.

Ronald Evans (CAPCOM)

Apollo 11, Houston. Roger. You faded out a little bit there, Buzz. I understand you have the VHF Simplex A on now. Is that correct? Over.

Buzz Aldrin (LMP)

That affirmative. VHF Simplex A and we're TR on VHF.

Ronald Evans (CAPCOM)

Roger. Mighty fine. We'll watch it as you are coming on in and let you know when the intelligibility is up. We'll make a voice check with you at that time.

Neil Armstrong (CDR)

Houston, Apollo 11. I've been holding here in SCS control MINIMUM DEADBAND RATE LOW with the limit cycle on, just as a matter of curiosity, if you guys wanted some fuel numbers from that.

Ronald Evans (CAPCOM)

11, Houston. Roger. We copy and we've been figuring it out.

Michael Collins (CMP)

It's a pleasure to be able to waste gas.

Ronald Evans (CAPCOM)

Roger. That's affirmative.