Ground proximity warning system for an excessive descent rate ov

Details Ground proximity warning system for an excessive descent rate ov Ground proximity warning system for an excessive descent rate ov

1986-07-15

1989-08-15

Orsino, Joseph A.

Communications: electrical

Aircraft alarm or indicating systems

Flight alarm

73178T, 342 65, 364433, G08B 2300

Patent

active

048579238

ABSTRACT:
An aircraft ground proximity warning system having an excessive descent rate warning mode which generates a warning signal when the descent rate of the aircraft exceeds a predetermined limit for the particular altitude of the aircraft above ground. The warning system provides for three separate warnings. A SINK RATE advisory warning is generated for combinations of lesser descent rates and greater altitudes. A PULL UP warning is generated for higher descent rates at lower radio altitudes. After a predetermined time after the SINK RATE warning is generated a TERRAIN warning is provided to indicate to the pilot of the aircraft that an excessive sink rate condition exists and the aircraft is flying over undulating or mountainous terrain. Also disclosed is logic circuitry for detecting that the aircraft is flying over undulating terrain.

REFERENCES:
patent: 3925751 (1975-12-01), Bateman et al.
patent: 3947808 (1976-03-01), Bateman
patent: 3958219 (1976-05-01), Bateman et al.
patent: 4030065 (1977-06-01), Bateman
patent: 4060793 (1977-11-01), Bateman
patent: 4121287 (1978-10-01), Leal et al.
patent: 4215334 (1980-07-01), Bateman
patent: 4551723 (1985-11-01), Paterson
patent: 4567483 (1986-01-01), Bateman et al.

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