WASHINGTON — A flight test of an experimental unmanned vehicle designed to fly at hypersonic speeds has ended in failure, the US Air Force said Wednesday. The X-51A Waverider was dropped from a B-52 bomber Tuesday and launched by a rocket booster as planned but the flight was over in…
The U.S. Air Force will test an experimental plane on Tuesday that’s capable of flying at hypersonic speeds of over one mile per second. If Tuesday’s test is successful, it will mark the first time the craft has traveled at sustained speeds topping Mach 6, or roughly 3,600 miles per…