Yesterday, the Air Force was planning on running a 300-second test of the Waverider X51A, its hypersonic craft that should be capable of speeds in excess of Mach 6.
Scramjet Destroys NASA Record, Hits Mach 5 For Three Minutes
The U.S. Air Force's experimental X-51A Waverider set a hypersonic flight record when it flew at Mach 5 — five times the speed of sound — for more than three minutes. The previous scramjet record was a mere 12 seconds.
