Boeing X-51 Waverider experimental unmanned scramjet aircraft capable of reaching Mach 5.
Fullsize image: https://s3-us-west-1.amazonaws.com/h...t_fullsize.jpg
Previously:
NASA X-43 unmanned hypersonic craft - photos
Lockheed Martin X-59 QueSST - photo
Concorde flying at supersonic speed - photo
X-1 mothership hydraulic lift - photo
Guy visits all SR-71 Blackbird planes - photos
Boom XB-1 supersonic jet fuselage - photo
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