Monday, July 20, 2009

Apollo+40: Final Descent

102:43:01 (LMP): "750 [feet]. Coming down at 23 [feet per second]."

102:43:21 - Armstrong switches from the automatic descent to P66 - computer-assisted manual landing control - at 600 feet altitude; searching for a clear place to land!

102:43:26 (LMP): "Okay 400 feet down at 9. 58 forward." (Armstrong is moving Eagle rapidly forward looking for a place to set down.)

102:43:35 (LMP): "330, 3-1/2 down."

102:43:42 (LMP): "Okay, you're pegged on horizontal velocity." (Armstrong is maneuvering the LM so quickly forward that it's off the measurement scale. He'll have to null out the horizontal velocity before touchdown, otherwise the LM will tip over!)

102:43:52 (LMP): "1-1/2 down. Ease her down. 270 [feet]"

102:43:58 (CDR): "Okay, how's the fuel?"

102:44:00 (LMP): "8 percent [fuel remaining]."

102:44:02 (CDR): "Okay. Here's a...looks like a good area here."

102:44:04 (LMP): "I got the shadow out there." (Aldrin can now see Eagle's shadow on the lunar surface!)

102:44:24 (LMP): "200 feet, 4-1/2 down."

102:44:31 (LMP): "160 feet, 6-1/2 down."

102:44:45 (LMP): "100 feet, 3-1/2 down, 9 forward. Five percent [fuel remaining]. Quantity [warning] light."

102:44:54 (LMP): "Okay. 75 feet. And it's looking good. Down a half, 6 forward."

102:45:02 (CAPCOM): "60 seconds." (At this call, Armstrong has to land within 60 seconds or abort because of low fuel).

102:45:08 (LMP): "60 feet, down 2-1/2. 2 forward. 2 forward. That's good."

102:45:17 (LMP): "40 feet, down 2-1/2. Picking up some dust!"

Lunar dust, undisturbed for billions of years, is now being stirred up by Eagle's descent engine!

102:45:25 (LMP): "4 forward. 4 forward. Drifting to the right a little. 20 feet, down a half."

102:45:31 (CAPCOM): "30 seconds [of fuel remaining]."

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