Ejection seat control using aircraft radio altimeter

Details Ejection seat control using aircraft radio altimeter Ejection seat control using aircraft radio altimeter

1991-12-04

1993-11-16

Peters, Jr., Joseph F.

Aeronautics and astronautics

Aircraft structure

Fuselage and body construction

244122R, 244122AD, 244122AH, B64D 2511, B64D 25112

Patent

active

052616304

ABSTRACT:
A pilot's ejection seat is propelled in an upward direction after ejection by employing a high gain signal from a radio altimeter on board an aircraft. The vertically downward high gain vector is inverted by adding 180.degree. to its phase component and providing the resultant signal to an inexpensive gyro or assembly of gyros installed in the seat. The gyros are constantly updated with information concerning the upward vertical direction and upon ejection, the gyros maintain this information for a sufficient period of time to control the ejection seat propulsion system in a manner achieving a vertically upward trajectory that will enable the pilot to clear a disabled aircraft and achieve the orientation necessary to deploy a parachute.

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Aronne, A. "Escape Low and Hot," Mechanical Engineering, May 1983, pp. 30-38.

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