Martin X-24B

From the placard:
In 1972, the X-24A was stripped to the basic framework and rebuilt as the X-24B with a more stable external configuration designed by the Air Force Flight Dynamics Laboratory. The new body was delta-shaped and had twice the lifting surface of the X-24A. As a continuation of PILOT (Piloted Low-Speed Tests), the goals of the testing program were to explore handling qualities of the wingless configuration for extended near-earth flight and for conventional runway approaches and landings.

The flight plan for the X-24B was much the same as that of the X-24A. After being carried to about 45,000 feet (13,680 meters) altitude by a B-52, the X-24B was released. Following ignition and burnout of the rocket engine, the piot guided the lifting body to a glide landing. On August 5, 1975, the X-24B made the first landing of a lifting body on a conventional runway. A second landing on the same runway on August 20, 1975, confirmed that the lifting body could safely be landed like normal aircraft.

The X-24B made its thirty-sixth and last flight on November 26, 1975. It was delivered to the Museum in November 1976.

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