Communications: electrical – Aircraft alarm or indicating systems – Flight alarm
Patent
1981-04-30
1985-01-22
Groody, James J.
Communications: electrical
Aircraft alarm or indicating systems
Flight alarm
73178T, 340960, 364433, G01C 500, G01S 904
Patent
active
044954832
ABSTRACT:
To increase the effectivity of warnings and to decrease nuisance warnings in a ground proximity warning system having several modes of operation, the switching from one mode to another is done as a function of time. In addition, in a ground proximity warning system where a warning signal is generated in accordance with a predetermined relationship between flight parameters, one or more of these parameters can be varied as a function of time in order to, for example, increase the altitude above ground as a function of time from take-off that a terrain clearance warning may be generated or to decrease as a function of time, the radio altitude below which a negative take-off after a climb warning may be generated.
REFERENCES:
patent: 3715718 (1973-02-01), Astengo
patent: 3934222 (1976-01-01), Bateman et al.
patent: 3936796 (1976-02-01), Bateman
patent: 3944968 (1976-03-01), Bateman et al.
patent: 3946358 (1976-03-01), Bateman
patent: 3947810 (1976-03-01), Bateman et al.
patent: 3958218 (1976-05-01), Bateman
patent: 4030065 (1977-06-01), Bateman
patent: 4215334 (1980-07-01), Bateman
Groody James J.
Killingsworth Ted E.
McMurry Michael B.
Sundstrand Corporation
Williamson Harold A.
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