X-Planes: Pushing the Envelope of Flight

AFFTC/HO Air Force Base air vehicle aircraft airplane altitude April August Bell X-1 Boeing Phantom bomber built and flown Cardenas Chance Vought class Pratt controls Convair Crusader December demonstrator Dry Lake Edwards AFB Edwards Air Force Electric February feet 8 inches feet long fighter flight at Edwards flight test program gross weight inches high inches long jet-powered June lifting body Lockheed Martin Lockheed test pilot Mach maximum McDonnell Douglas miles per hour Muroc NASA North American X-15 Northrop Grumman Northrop test pilot nose gear November October operational Palmdale to Edwards plane pounds powered by four powered flight Pratt & Whitney premier production prototype Sabre September space shuttle speed of Mach speed of sound successful first flight supersonic test flights test pilot Tony LeVier top speed turbofan turbofan engines turbojet turbojet engines U.S. Air Force U.S. Army Air U.S. Navy UCAV unmanned wing wingspan world's Yeager