WASHINGTON brugt canada goose jakke, May 11 (UPI) -- The U.S. Defense Advanced Research Projects Agency announced that the first phase of the Vulcan engine-system development program is under way. DARPA selected defense contractors Alliant Techsystems cheap Abercrombie and Fitch hoodies, General Electric Canada goose, Rolls-Royce and United Technologies to support the eight-month development phase for the Vulcan program. Officials said the next-generation Vulcan propulsion technology is being developed to enable an acceleration of a full-scale hypersonic vehicle from a resting status to Mach 4 speeds. The advanced propulsion system will support intelligence canada goose på nätet, surveillance and reconnaissance missions outlet canada goose, among others. According to a news release billige canada goose, the four contractors will "develop systems requirements and a conceptual design for a constant volume combustion demonstration system and develop a critical technology development plan to reduce risk on all key aspects of the Vulcan engine."

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