Terrain clearance warning system for aircraft

Details Terrain clearance warning system for aircraft Terrain clearance warning system for aircraft

1976-07-19

1977-06-14

Kunin, Stephen G.

Communications: electrical

Selective

Having indication or alarm

73178T, 2351502, 244180, 343 7TA, 343112CA, G01C 500

Patent

active

040300650

ABSTRACT:
By utilizing a radio altimeter in conjunction with a measure of the aircraft speed, landing gear position and flap position, an aircraft terrain warning system is made possible which provides a voice warning indicating that the aircraft is too low with respect to the terrain when the aircraft is above a predetermined speed. For aircraft speeds below the predetermined speed, a voice warning is provided when the aircraft is below a predetermined altitude with the landing gear up indicating that the aircraft is too low with the gear up and when the gear is down and the flaps are not in a landing position and the aircraft descends below a second predetermined altitude a voice warning is generated indicating that the aircraft is too low with flaps up.

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"The Sundstrand Ground Proximity Warning System", undated publication of Sundstrand Data Control, Inc., 13-475.

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