Discover the story of the North American X-15's first powered flight on September 17, 1959, when Scott Crossfield piloted the rocket-powered aircraft to Mach 2.11-launching a new era of hypersonic ...
July 22 (UPI) --NASA's quest for a quieter supersonic jet passed an early test after its X-59 aircraft was able to taxi at low speed at a manufacturing plant in California. The space agency on Tuesday ...