
Some details of DARPA's very ambitious Vulcan engine program have finally been made public. A Ramjet/Scramjet hybrid engine, the specifications call for the engine to change modes 'on the fly' (as it were). The bottom line is an engine that could propel a plane to somewhere between Mach 6 and Mach 10 - which is very fast indeed.
Basic details and program outline via AviationWeek:
www.aviationweek.com
Details, cool prototype mockups, and details via DARPA:
www.darpa.mil
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