Pathfinder aircraft in flight.
Sleek lines are apparent in this side-view of an early desk-top model of NASA's X-43A "Hyper-X," or Hypersonic Experimental Vehicle.
Pathfinder ground preparations prior to altitude record setting flight of 71,500 feet.
The second X-43A hypersonic research vehicle, mounted under the right wing of the B-52B launch aircraft, viewed from the B-52…
Extreme close-up of the SR-71B operated by NASA's Dryden Flight Research Center, Edwards, California, gives an unusual view of the…
The first X-43A hypersonic research aircraft and its modified Pegasus booster rocket were carried aloft by NASA's NB-52B carrier aircraft…
NASA's SR-71B and F-18 HARV aircraft left Edwards Air Force Base, Calif., on March 24, 2003.
Pathfinder aircraft in flight.
The first of three X-43A hypersonic research aircraft and its modified Pegasus® booster rocket underwent combined systems testing while mounted…
Pathfinder aircraft in flight.
