Gallery: Pratt & Whitney Rocketdyne/Boeing X-51A Waverider

Pratt & Whitney Rocketdyne/Boeing X-51A Waverider Image 1

The unmanned X-51A broke the scramjet endurance record by flying at five times the speed of sound for more than three minutes.Courtesy Pratt & Whitney/Boeing

Pratt & Whitney Rocketdyne/Boeing X-51A Waverider Image 2

Previous scramjets have not been able to keep going for more than 12 seconds.Courtesy Pratt & Whitney/Boeing

Pratt & Whitney Rocketdyne/Boeing X-51A Waverider Image 3

The project was funded by the U.S. Air Force and DARPA.Courtesy Pratt & Whitney/Boeing

Pratt & Whitney Rocketdyne/Boeing X-51A Waverider Image 3

The project was funded by the U.S. Air Force and DARPA.Courtesy Pratt & Whitney/Boeing