The X-51A Waverider was released from a B-52 Stratofortress off the southern California coast and its scramjet engine accelerated the aircraft to Mach 6, and it flew autonomously for 200 seconds before losing acceleration. At that point the test was terminated.
The Air Force said the previous record for a hypersonic flight was 12 seconds.
"We are ecstatic to have accomplished many of the X-51A test points during its first hypersonic mission," said Charlie Brink, an X-51A program manager with the Air Force Research Laboratory at Wright-Patterson Air Force Base, Ohio.
Link--> Aircraft sets hypersonic record at six times the speed of sound - Telegraph
Well were one step closer to being able to travel to the other side of the world in like less than a minute.