
Life Support Technician Bobby McElwain assists German pilot Kieran Kim before a flight of the X-31 Enhanced Fighter Maneuverability Demonstrator.

NACA X-1 pilot John Griffith hands his flight gear to Dick Payne as crew members Ed Edwards and Clyde Bailey…

Ground crewmen maneuver AeroVironment's solar-powered Helios Prototype flying wing on its ground support dolly during functional checkouts prior to its…

Ground crewmen maneuver AeroVironment's solar-powered Helios Prototype flying wing on its ground support dolly during functional checkouts prior to its…

This NACA High-Speed Flight Research Station photograph is a close-up view showing an engineer calibrating the trailing edge flap of…

Helios Prototype Flying Wing performing a low-altitude test flight over Rogers Dry Lake at Edwards, Calif.

Helios Prototype Flying Wing performing a test flight over Rogers Dry Lake at Edwards, Calif.

The Helios Prototype flying wing stretches almost the full length of the 300-foot-long hangar at NASA's Dryden Flight Research Center,…

The Helios Prototype is an enlarged version of the Centurion flying wing, which flew a series of test flights at…

The HL-10, seen here parked on the ramp, was one of five lifting body designs flown at NASA's Dryden Flight…