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Boeing X-51 Boeing X-51

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The Boeing X-51 (also known as X-51 WaveRider) is an unmanned scramjet demonstration aircraft for hypersonic (Mach 6, approximately at altitude) flight testing. It completed its first powered hypersonic flight on 26 May 2010. After two unsuccessful test flights, the X-51 completed a flight of 300 seconds and reached speeds of over Mach 5 on 1 May 2013 for the longest duration hypersonic flight.

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Scramjet

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740

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eng

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Flight testing

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MGM-140 ATACMS rocket

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Robotic flight demonstrator

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>6,200

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4000

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>3,900

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2010-05-26

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Boeing, Air Force

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The Boeing X-51 (also known as X-51 WaveRider) is an unmanned scramjet demonstration aircraft for hypersonic (Mach 6, approximately at altitude) flight testing. It completed its first powered hypersonic flight on 26 May 2010. After two unsuccessful test flights, the X-51 completed a flight of 300 seconds and reached speeds of over Mach 5 on 1 May 2013 for the longest duration hypersonic flight. The X-51 is named "WaveRider" because it uses its shock waves to add lift. The program is run as a cooperative effort of the United States Air Force, DARPA, NASA, Boeing, and Pratt & Whitney Rocketdyne. The program is managed by the Aerospace Systems Directorate within the United States Air Force Research Laboratory (AFRL). X-51 technology will be used in the High Speed Strike Weapon (HSSW), a Mach 5+ missile planned to enter service in the mid-2020s.