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originally posted by: Zaphod58
a reply to: MerkabaMeditation
And according to the Apollo 12 report, put together with real data not by watching videos, the engine stop button was activated almost 2 seconds prior to pad contact. They went from a 0.4 ft/sec descent rate to a max of 3.5 ft/sec rate.
04 14 32 27 LMP 18 feet, coming down at 2. You've got it made.
Come on in there. 24 feet. (at about 4:31 in the video; moon landing in progress)
04 14 32 33 LMP CONTACT LIGHT.(at about 4:37 in the video; dust is whirling up from the rocket engine thrust)
04 14 32 34 LMP It's on.(at about 4:38 in the video; the ground is no longer visible because of the Lunar Module's own shadow as it is so close to the ground, dust is whirling)
04 14 32 36 CC Roger. (at about 4:40 in the video; Everthing is black, dust is whirling)
04 14 32 37 LMP PRO. (at about 4:41 in the video; Here they clearly are standing still and have landed)
04 14 32 38 CDR Yes_ PRO. (at 4:42 in the video; they are standing still but the dust is still whirling due to the rocket engine still being turned on)
04 14 32 40 LMP ENGINE ARM, OFF. Okay. (at 4:44 in the video; This means they turned off the rocket engine)
110:32:29 Bean: 18 feet, coming down at 2. He's got it made! Come on in there. 24 feet.
110:32:35 Bean: Contact Light.
110:32:36 Carr: Roger. Copy Contact.
[The Mission Report gives the time of contact as 110:32:36, which is 06:54:36 UTC on 19 November 1969.]
[Jones - "I gather from the tech debrief that you actually dropped the last two or three feet."]
[Conrad - "You're supposed to."]
[Jones - "And the theory on that was?"]
[Conrad - "Lunar contact light came on and the probes were six feet below the gear. We were supposed to shut the engine off right then because they did worry about the bell mouth too close to the ground."]
[Bean - "Or hitting a rock and denting the bell mouth."]
[Conrad - "And I said, always, 'I'll never do that; who wants to shut off a good engine when you're still in the air?' But we had to train to shut it off. Neil landed with his (engine still) on. And, so, I was going to do the same thing. And, whoever said 'lunar contact light', I went 'bamm' and shut it down. (Laugh) Somewhere in there, I think there's an 'Oh #'. Or there almost was. But about that time we were on (the Moon), and I didn't have to get it (the 'oh #') the rest of the way out. I remember that."]
[What Pete is saying is that he intended to keep the engine running until they were down, just as Neil had done. During training, he was a good boy and always shut the engine off immediately after the contact light came on. By the time they were actually landing, shutting the engine off promptly had become so ingrained that he had shut it down before he remembered that he'd wanted to leave it on.]...
...[Conrad, from the 1969 Technical Debrief - "I had my head in the cockpit when the Lunar Contact light came on and I instinctively hit the Stop button and that's how we got shut off in the air. We were, I'd estimate, 2 or 3 feet in the air still when I shut down the engine and it dropped right on in]
110:32:39 Conrad: (Garbled; possibly 'Drop')
110:32:40 Bean: Pro(ceed)!
110:32:41 Conrad: Yeah, Pro.
110:32:43 Bean: Okay. Engine Arm, Off.
originally posted by: MJOne82
No wonder Obama cancelled the return to the moon mission.
Since "..it ran into technical difficulties ..".
I guess with that logic we would have a hardtime building submarines today, that could perform as well as those during the second world war.
It's a friggin miracle that people still can manufacture shoes.