Communications: electrical – Selective – Having indication or alarm
Patent
1980-01-04
1982-03-09
Groody, James J.
Communications: electrical
Selective
Having indication or alarm
73178T, 244180, G01C 2100, G08B 2300
Patent
active
043192181
ABSTRACT:
During a take-off or missed approach phase of operation the aircraft's maximum barometric altitude is retained in a memory element and compared to the aircraft's current altitude, and if the aircraft's current barometric altitude should be below the maximum altitude by a predetermined amount based on the aircraft's radio altitude, a voice warning is generated indicating that the aircraft is descending. Landing gear and flaps are monitored by the system and if the gear or flaps are down, an additional voice warning is generated indicating that the gear or flaps are down.
REFERENCES:
patent: 3715718 (1973-02-01), Astengo
patent: 3946358 (1976-03-01), Bateman
patent: 3947810 (1976-03-01), Bateman et al.
patent: 4030065 (1977-06-01), Bateman
patent: 4060793 (1977-11-01), Bateman
Sundstrand Data Control, Inc., "Mark II Ground Proximity Warning System", 1976.
Groody James J.
Killingsworth Ted E.
McMurry Michael B.
Sundstrand Corporation
Williamson Harold A.
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