Lockheed pushing $1 billion Mach 6 airbreather
jueves, 17 de marzo de 2016
https://www.flightglobal.com/news/articles/lockheed-pushing-1-billion-mach-6-airbreather-423198/
Lockheed Martin's unmanned SR-72 aircraft concept has surfaced again with renewed vigour, with company leadership now pushing a reusable, air-breathing hypersonic vehicle as an "affordable" way to validate a new propulsion concept for achieving speeds within the atmosphere between Mach 6.0 to Mach 20.
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