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美国研发下一代航天发动机 2 0 0 1年底 ,美国航宇局马歇尔航天飞行中心与波音公司、空气喷气公司和普惠公司组成的工业联盟 ,签署了一项发动机研制合同 ,其内容是在 2 0 0 6年之前研制出下一代高超音速航天器用吸气式火箭发动机的地面试验样机。新研制的发动机系统将能使自
U.S. Develops Next Generation of Space Engines At the end of 2001, an industrial consortium consisting of the NASA Marshall Space Flight Center and Boeing, Air Jets and Pratt & Whitney signed an engine development contract covering 20 Six years ago, the ground test prototype for the next generation of hypersonic spacecraft aspirated rocket engine was developed. The newly developed engine system will be able to make it