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- Path: sparky!uunet!olivea!spool.mu.edu!agate!stanford.edu!rutgers!concert!uvaarpa!murdoch!rayleigh.mech.Virginia.EDU!rbw3q
- From: rbw3q@rayleigh.mech.Virginia.EDU (Brad Whitehurst)
- Newsgroups: sci.space
- Subject: Re: Aerospike engines/SSTO/DC-?
- Message-ID: <1992Dec21.151539.7310@murdoch.acc.Virginia.EDU>
- Date: 21 Dec 92 15:15:39 GMT
- References: <1992Dec20.011900.4635@titan.ksc.nasa.gov>
- Sender: usenet@murdoch.acc.Virginia.EDU
- Organization: University of Virginia
- Lines: 41
-
- In article <1992Dec20.011900.4635@titan.ksc.nasa.gov> waterman@titan.ksc.nasa.gov writes:
- >On the subject of DC-? , SSTO and Aerospike Engines the following
- >observation could be made to the question Why Aerospike Engines
- >are not used.
- >
- >Lets make an assumtion here that the military has a super secret
- >spy plan (Aurora?) that can go (atleast) mach 8 to 10.
- >An engine such as this would need to be built to support a SSTO
- >vehicle. The military could not have some non classified project
- >stumble on their working design. What then is the goal of the
- >military as it comes to SSTO research?
- >
- >The military will oversee the research in this area. Any designs
- >which could work (or would lead to the program developing the
- >same engine) will be discouraged or lobbied as non workable
- >designs. In short the objectives of the military is to assure
- >that this country does not have a working civilian SSTO craft.
- >
- >or atleast thats how I see it
- >
- >Bob
- >
- Actually, right conspiracy theory, wrong engine! :-)
- IF there is an Aurora (decent bet), there's no reason for it
- to be powered by an aerospike rocket. It is almost certainly an
- airbreathing engine. The two most likely candidates are either a
- pulsed detonation wave engine (PDWE--the "doughnut on a rope"
- contrail) or a SCRAMjet, in combination with a turbine engine to get
- it up and going. The likelihood of it being a SSTO is slim--at Mach
- 5-8, it can get anywhere it wants in a hell of a hurry, and it'll be
- plenty high--certainly (?) over 100,000 feet. I'd bet that they've
- flown both kinds of engines, and may use some sort of variable-cycle
- engine. Lastly, while I doubt that there would be an active
- conspiracy to suppress SCRAMjet/aerospike/SSTO research--Congress does
- a good enough job anyway--it is disappointing that there is a
- potential research bonanza squirrelled away while we're spending more
- $$$$$ reinventing the wheel. Hopefully, it will be a better wheel!
- --
-
- Brad Whitehurst | Aerospace Research Lab
- rbw3q@Virginia.EDU | We like it hot...and fast.
-