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NASA has a "flight experiment" planned for 2001, and has designed a hybrid pulse-detonation air-breather/rocket in conjunction with US company Adroit Systems, which has tested an experimental propulsion tube. Bushnell says that such compressorless engines produce toroidal vortices, but will not comment on strange contrails associated with the "Aurora" - the much-rumoured US military replacement aircraft for the Lockheed SR-71 Blackbird.http://www.flightglobal.com/articles/1997/11/26/30037/towards-hypersonic-flight.html^^ Flight Global. 1997 article.
NASA has a "flight experiment" planned for 2001, and has designed a hybrid pulse-detonation air-breather/rocket in conjunction with US company Adroit Systems, which has tested an experimental propulsion tube. Bushnell says that such compressorless engines produce toroidal vortices, but will not comment on strange contrails associated with the "Aurora" - the much-rumoured US military replacement aircraft for the Lockheed SR-71 Blackbird.
http://www.flightglobal.com/articles/1997/11/26/30037/towards-hypersonic-flight.html
^^ Flight Global. 1997 article.
