
The second X-43A hypersonic research aircraft, attached to a modified Pegasus booster rocket and followed by a chase F-18, was…

A battery-powered, quarter-scale prototype of the solar-powered, remotely piloted Centurion flying wing sits on the lakebed at California's El Mirage…

Artist's depiction of a Hyper-X research vehicle under scramjet power in free-flight following separation from its booster rocket.

Centurion designer Bill Parks and remote pilot Wyatt Sadler go over the checklist for a test flight of the battery-powered…

With the snow-covered San Gabriel Mountains as a backdrop and a motorcycle-mounted chase crew alongside, a quarter-scale model of the…

The third X-43A hypersonic research aircraft, attached to a modified Pegasus booster rocket, was taken to launch altitude by NASA's…

NASA's first X-38 Advanced Technology Demonstrator for the proposed Crew Return Vehicle is transported down a road at NASA's Dryden…

This artist's concept depicts the Hyper-X research vehicle riding on a booster rocket prior to being launched by the Dryden…

A side-view of an early desk-top model of NASA's X-43A "Hyper-X," or Hypersonic Experimental Vehicle, which has been developed to…

NASA's first X-38 Advanced Technology Demonstrator for the proposed Crew Return Vehicle (CRV) arrives at NASA's Dryden Flight Research Center,…