Fwd: Question about Apollo LM

From: Bradley Allen (bradley.p.allen@gmail.com)
Date: Wed Nov 11 2009 - 18:04:18 UTC

  • Next message: ka8vit@ka8vit.com: "RE: Question about Apollo LM"

    From Orloff and Harland's "Apollo: The Definitive Sourcebook"
    (Spinger/Praxis 2006):
    
    Apollo 9: Ascent stage jettisoned in Earth orbit at 101:22:46 ground
    elapsed time (GET), after which a burn was performed that placed it
    into a 3760.9 x 126.6 nmi orbit; re-entered on 10/23/1981.
    Apollo 10: Jettisoned at 108:24:36 GET after which a burn was
    performed to place it into solar orbit.
    Apollo 11: Jettisoned at 130:09:31 GET, later impacted the lunar
    surface (date and time unspecified.)
    Apollo 12: Jettisoned at 149:55:17 GET, after which a deorbit burn was
    performed that caused it to impact the lunar surface at 149:55:17 GET.
    Apollo 13: LM (ascent and descent still together) jettisoned at
    141:30:00, after which it reentered the Earth's atmosphere, pieces
    impacting in the open ocean between Samoa and New Zealand.
    Apollo 14: Jettisoned at 145:49:58 GET, after which a deorbit burn was
    performed that caused it to impact the lunar surface at 147:42:23 GET.
    Apollo 15: Jettisoned at 179:30:01 GET, after which a deorbit burn was
    performed that caused it to impact the lunar surface at 181:29:37 GET.
    Apollo 16: Jettisoned at 195:00:12 GET, after which the ascent stage
    lost stability, making a deorbit burn impossible; remained in lunar
    orbit for about a year before impacting the lunar surface.
    Apollo 17: Jettisoned at 191:18:31 GET, after which a deorbit burn was
    performed that caused it to impact the lunar surface at 193:17:20 GET.
    
    Any transcription errors in the above are mine. - cheers, BPA
    
    Bradley P. Allen
    http://bradleypallen.org
    +1 310 951 4300
    
    On Wed, Nov 11, 2009 at 9:16 AM, <Skywayinc@aol.com> wrote:
    >
    > Periodically I get questions forwarded to me by  the Hayden Planetarium
    > from members of the general public. I wasn't 100% sure  on this one, so I
    > thought I
    > would post it here on SeeSat for a "definitive"  answer from our group:
    >
    > "What happened to the ascent stage of the lunar  excursion module
    > after the crew re-entered the command module during  the Apollo
    > program?"
    >
    > My own guess is, that after the upper  stage of the LM is jettisoned it
    > ultimately
    > ends up crashing on to the lunar  surface.
    >
    > Or is there another scenario?
    >
    > Any  takers?
    > Thanks in advance!
    > -- joe rao
    >
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