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- Newsgroups: sci.space.shuttle
- Path: sparky!uunet!digex.com!mheney
- From: mheney@access.digex.com (Michael K. Heney)
- Subject: Re: Launch sequence of events?
- Message-ID: <BxBApn.C45@access.digex.com>
- Sender: usenet@access.digex.com
- Nntp-Posting-Host: access.digex.com
- Organization: Express Access Online Communications, Greenbelt, MD USA
- References: <1992Nov6.000648.6893@ultb.isc.rit.edu>
- Date: Fri, 6 Nov 1992 20:39:22 GMT
- Lines: 36
-
- In article <1992Nov6.000648.6893@ultb.isc.rit.edu> dsf5454@ritvax.isc.rit.edu writes:
- >Hello, net community... I just got this information. However, I would like to
- >see if anyone can correct this or add to it. If you don't want to read this,
- >just press 'n' or whatever your newsreader permits to skip this article.
- >
- >(T minus hours:minutes:seconds:tenths of a second)
- >T-0:0:06.94 Computer starts SSMEs
- >T-0:0:06.60 SSME #1 ignites
- >T-0:0:06.48 SSME #2 ignites
- >T-0:0:06.36 SSME #3 ignites
-
- [...etc. Summary - Big Piece of Hardware becomes airborne against its ]
- [ better judgement and begins moving mind-bogglingly fast. ]
-
- >T+0:08:38 MECO
- >T+0:08:54 ET SEP.
- >T+0:09:00 -Z translation done; preparation for OMS-1 burn
- >T+0:10:39 OMS-1 burn.
- >T+0:12:24 End of OMS-1 burn.
- >T+0:12:30 Post-OMS-1 activities, APU shutdown.
- >T+0:45:58 OMS-2 burn.
- >T+0:46:34 OMS-2 cut-off.
-
- Shuttle launches now use a "direct ascent" trajectory, no OMS-1 burn is
- performed. The time and duration of the OMS2 burn is a bit dependant
- on the height and inclination of the target orbit, I believe; however,
- with no OMS-1 burn, I think the OMS-2 burn is closer to 2 minutes in
- duration. I'm sure someone will tell us ... ;-}
-
-
-
-
- --
- Mike Heney | Senior Systems Analyst and | Reach for the
- mheney@access.digex.com | Space Activist / Entrepreneur | Stars, eh?
- Kensington, MD (near DC) | * Will Work for Money * |
-