LOS ANGELES (AP) — An experimental unmanned aircraft developed for the U.S. Air Force went hypersonic during a recent test off the Southern California coast, flying at more than five times the speed of sound. […]
CAPE CANAVERAL, Fla. (AP) — Supersonic skydiver Felix Baumgartner was faster than he or anyone else thought when he jumped from 24 miles up.
(AP) – An unmanned experimental aircraft failed during an attempt to fly at six times the speed of sound in the latest setback for hypersonic flight. The X-51A Waverider was designed to reach Mach 6, […]