Pentagon requirements for engine makers are tough: more range, speed, endurance and altitude--and all for less money. The trouble is, the military services articulate how they actually want to field those capabilities. This ambiguity may be moving toward resolution, however. The first big break for the aerospace industry may have come with the announcement from U.S. Air Force Secretary Michael Wynne that the service will accelerate development of next-generation propulsion and unmanned ...


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