A close-up of the X-43A Hypersonic Experimental Vehicle, or "Hyper-X," in its protective shipping framework after it arrived at the Dryden Flight Research Center in October 1999.
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A close-up of the X-43A Hypersonic Experimental Vehicle, or “Hyper-X,” in its protective shipping framework after it arrived at the Dryden Flight Research Center in October 1999. The X-43A was developed to research a dual-mode ramjet/scramjet propulsion system at speeds from Mach 7 up to Mach 10 (7 to 10 times the speed of sound, which varies with temperature and altitude).October 1999NASA Photo / › X-43A Project Description