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- Newsgroups: sci.space.shuttle
- Path: sparky!uunet!zaphod.mps.ohio-state.edu!saimiri.primate.wisc.edu!ames!news.dfrf.nasa.gov!shafer
- From: shafer@rigel.dfrf.nasa.gov (Mary Shafer)
- Subject: Re: STS-1 DISASTER/COVERUPy
- In-Reply-To: henry@zoo.toronto.edu's message of Wed, 6 Jan 1993 18:22:52 GMT
- Message-ID: <SHAFER.93Jan6110500@rigel.dfrf.nasa.gov>
- Sender: news@news.dfrf.nasa.gov (Usenet news)
- Organization: NASA Dryden, Edwards, Cal.
- References: <1992Dec15.205959.2845@cnsvax.uwec.edu>
- <1992Dec19.090259.2203@ccsvax.sfasu.edu> <18330@bcars664.bnr.ca>
- <1993Jan5.234659.7819@ee.ubc.ca> <C0G325.FoD@zoo.toronto.edu>
- Date: Wed, 6 Jan 1993 19:05:06 GMT
- Lines: 26
-
- On Wed, 6 Jan 1993 18:22:52 GMT, henry@zoo.toronto.edu (Henry Spencer) said:
-
- HS> In article <1993Jan5.234659.7819@ee.ubc.ca> davem@ee.ubc.ca (Dave Michelson) writes:
- >>Plus the 747 airframe, crew, and modifications. One could not expect
- >>the carrier aircraft to survive a launch of orbiter from its back.
- >
- >Even the X-15 didn't light its engine until *after* separation from the
- >carrier aircraft.
-
- HS> There are missiles which fly off their launch rails under power, rather
- HS> than delaying ignition until after separation. Admittedly, a delay is
- HS> usually considered safer.
-
- For an example on the NB-52B, the HiMAT (a supersonic RPRV) took
- off with its J79 engine running. The fuel tank was kept topped
- up from a tank in the pylon until shortly before launch.
-
- As I recall, they used JP-5 instead of JP-4 for this because of
- the "hot refueling" on the wing of the NB-52B. JP-5 is markedly
- less volatile than JP-4.
-
- The NB-52B pilots did not notice the thrust of the ninth engine.
- --
- Mary Shafer DoD #0362 KotFR NASA Dryden Flight Research Facility, Edwards, CA
- shafer@rigel.dfrf.nasa.gov Of course I don't speak for NASA
- "A MiG at your six is better than no MiG at all." Unknown US fighter pilot
-