USAF vehicle breaks record for hypersonic flight

In this image provided by the U.S. Air Foce an X-51A Waverider rides under the wing of a B-52 Stratofortress Dec. 9, 2008. A similar X-51A successfully launched from a B-52 Stratofortress, Wednesday May 26, 2010. The Rocketdyne-built air breathing scramjet engine accelerated the vehicle to Mach 6. It was the longest supersonic combustion ramjet-powered hypersonic flight to date. (AP Photo/US Air Force - Mike Cassidy) (AP Photo/US Air Force - Mike Cassidy)

May 27, 2010 5:24:49 AM PDT
An experimental aircraft has set a record for hypersonic flight, flying more than 3 minutes at Mach 6 - six times the speed of sound.

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