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- Newsgroups: sci.space
- Subject: Re: Aurora
- Message-ID: <1992Nov18.162659.624@sunspot.noao.edu>
- From: bbbehr@sunspot.noao.edu (Bradford B. Behr)
- Date: 18 Nov 92 16:26:59 GMT
- References: <Bxwt3F.BuA.1@cs.cmu.edu>
- Distribution: sci
- Organization: National Solar Observatory/SP, Sunspot NM, USA
- Lines: 43
-
- In article <Bxwt3F.BuA.1@cs.cmu.edu> flb@flb.optiplan.fi ("F.Baube x554") writes:
- > Can anyone summarize the rumors and speculation
- >about the "Aurora" black project ? Perhaps some comments
- >about the technologies that are involved, and what that
- >would mean for the development of SSTO, DC-X, HL-20. etc. ?
-
- As I understand it, Aurora is (are?) an entirely atmospheric vehicle,
- a replacement for the retired SR-71 recon aircraft (aka Blackbird).
- "Sightings" of the Aurora craft have been reported for a couple of
- years now, and a recent posting on rec.aviation.military mentions
- something looking not unlike the old XB-70 Valkyrie bomber prototypes,
- with retractable canard foreplanes. There have also been reports of
- some sort of fast "pulsejet" aircraft, which leaves a contrail looking
- like a string of hotdogs as it "putt-putts" its way across the sky. I
- recall reading some Aviation Week speculation about craft that are
- propelled by fuel burning on the _outside_ of the fuselage, utilizing
- hypersonic flow over a specially-shaped exterior to do the necessary
- compression to make an external ramjet, and tying this in to the
- Aurora sightings. There was also some thinking (guessing) that at
- least one of the couple of different designs referred to as "Aurora"
- might be unmanned (a super-souped-up RPV drone, in essence), since
- that would dispense with all the hardware needed to keep a pilot
- breathing.
-
- As far as connections to SSTO and HL-20, it seems that Aurora is in an
- entirely different flight regime (aero vs rocket), and that
- technologies really wouldn't cross over, except for maybe
- heat-resistant exteriors. There might be some NASP technology in the
- Aurora project, but as the Aurora is a long-range recon aircraft, it
- probably only uses ramjet technology (albeit vastly advanced) and not
- any sort of hydrogen burning scramjet action that would be needed to
- get to orbit. (Just speculation on my part.)
-
- I'm no DoD aeroengineer, just an aircraft buff, so if anybody's got
- any further info on Aurora, or corrections to my synopsis, do post!
-
- Brad
-
- --
- ----------------------------------------------------------------------
- Bradford B. Behr bbbehr@sunspot.sunspot.noao.edu
- Sacramento Peak National Solar Observatory, Sunspot NM 88349
- ----------------------------------------------------------------------
-