Method and apparatus to sense aircraft pilot ejection for rescue

Details Method and apparatus to sense aircraft pilot ejection for rescue Method and apparatus to sense aircraft pilot ejection for rescue

1997-08-29

1999-04-13

Tarcza, Thomas

Communications: directive radio wave systems and devices (e.g.,

Directive

Including a satellite

701213, G01S 502, H04B 7185

Patent

active

058942858

ABSTRACT:
A sensor apparatus to sense when an aircraft pilot has ejected is provided for safe actuation of a rescue locator radio. The ejection sensor apparatus (20) has a microphone (40), an accelerometer (35) and logic for determining that a pilot ejection event has occurred. The microphone (40) detects the differences in sound level (30) from normal cockpit noise to those during ejection and after deployment of a rescue chute. The accelerometer (35) detects the differences in acceleration level (25) during ejection and after deployment of a rescue chute. Pre-programmed acceptance templates (55) are compared in a digital processor (60) to ensure that ejection has occurred before a rescue radio (90) is activated. A manual turn on delay or turn off capability for the rescue radio is provided for facilitation of communications. Encrypted GPS location information and a pilot code are also included in the rescue radio transmission.

REFERENCES:
patent: 4845464 (1989-07-01), Drori et al.
patent: 5274560 (1993-12-01), LaRue

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