As a part of the Discretionary Descent Vehicle program, an attempt was made to integrate gyro-copter features into ejection seats and provideĪircrews with the ability to maneuver after ejection in hopes of increasing survivability and evading capture. High aircrew loss rates during the height of the Vietnam War spurred the US Air Force to acquire several B-8Ms for training andĮvaluation giving the aircraft the designation X-25A. Unlike a helicopter, the gyro-copter's rotor blades are unpowered therefore, the aircraft requires a short roll before taking-off. Gyrocopters are a helicopter-airplane hybrid, like a helicopter the gyrocopter is dependent on its rotor blade to create and maintain Little more than a rotor, seat, tailfin and motor theī-8M's simple design could be assembled from a kit by aviation hobbyists in less than forty hours using simple hand tools. The helicopter was assigned to the 160th Special Operations Aviation. A Russian immigrant to the United States, Benson designed the B-8M as a light, safe rotary-wing aircraft for private use. Benson said a fourth person was missing and was being sought by search teams at the site. The Benson B-8M gyrocopter is motorized version of the Benson B-7, a small single-seat gyro-glider developed in the mid-1950s by aviation A push-propeller aircraft using a wind-powered propeller for
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