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HiMAT on lakebed after landing January 3, 1980 HiMAT subscale research vehicle mated to B-52 mothership in flight, closeup view December 30, 1980 HiMAT subscale research vehicle mated to B-52 mothership in flight December 30, 1980 HiMAT in flight December 30, 1980

Equipped with an experimental fuel cell system to power the aircraft at night, the solar-electric Helios Prototype is shown during a checkout flight prior to its long-endurance flight demonstration June 7, 2003 ED03-0152-1 ED03-0152-1 NASA's Helios Prototype electrically powered flying wing began a checkout flight June 7 from the Navy's Pacific Missile Range Facility on the Hawaiian island of K..