From: Mike Lorrey (mlorrey@datamann.com)
Date: Sat Jun 09 2001 - 20:52:57 MDT
J Corbally wrote:
> >Japan Hopes To Expand Commuter Distance
> >by Peter Hadfield
> >Tokyo - April 14, 2000 - A revolutionary jet engine was unveiled at a
> >Tokyo aerospace show last week. Designed to power a new generation of
> >commercial aircraft that will fly at five times the speed of sound, the
> >Hypersonic Transport Propulsion System (HYPR) is the brainchild of Japan's
> >New Energy and Industrial Technology Development Organization (NEDO), a
> >branch of the Ministry of International Trade and Industry.
> >The heavy industry divisions of Kawasaki, Mitsubishi and
> >Ishikawajima-Harima have teamed up to develop the engine, which is made up
> >of two types of jet engine mounted end to end: a turbojet in front and a
> >ramjet at the back
>
> http://www.spacedaily.com/news/japan-hyperx-00a.html
>
> I'd heard of this dual engine proposal before. Anyone here got any
> expertise and can say whether this is a workable concept?
This is how the SR-71 jet engines work, which has functioned for 40 years or so
quite fine at official speeds of mach 3.5 (and up to 4.5 according to the rumor
mill when I was on active duty). Takes three States worth of airspace to make a
90 degree turn at those speeds, and is a perfect app for the transpacific routes
(no overland routes means no litigation from NIMBY _$$holes), dropping 13 hour
flight times to 2.5-3.5 hours, this will make Los Angeles more geopolitically
local to Tokyo than Washington.....
Mike
This archive was generated by hypermail 2.1.5 : Sat Nov 02 2002 - 08:08:02 MST