NASA (Boeing) X-43A Spaceplane-unmanned experimental hypersonic aircraft design to test scramjet technology in highly supersonic flight.
Guinness World Records recognized NASA's X-43A scramjet with a new world speed record for a jet-powered aircraft - Mach 9.6, or nearly 7,000 mph. The X-43A set the new mark and broke its own world record on its third and final flight on Nov. 16, 2004.
