. "460"^^ . "Boeing"@en . "Scramjet"@en . "Boeing, Air Force"@en . "21300"^^ . . "eng"@en . . . "740"^^ . . . "MGM-140 ATACMS rocket"@en . . "7.62"^^ . . "2010-05-26"^^ . "25"^^ . . ">3,900"@en . "4000"^^ . "1814"^^ . . "1"^^ . . ">6,200"@en . . "70000"^^ . "y"@en . "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."@en . "Boeing X-51"@en . "n"@en . "Robotic flight demonstrator"@en . . . . . "Boeing X-51"@fr . . ">5.1"@en . "None"@en . . "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."@en . "Flight testing"@en . "4"^^ .