Communications: electrical – Aircraft alarm or indicating systems – Flight alarm
Patent
1989-12-01
1991-10-22
Crosland, Donnie L.
Communications: electrical
Aircraft alarm or indicating systems
Flight alarm
244181, 340963, 364434, G08B 2300
Patent
active
050599640
ABSTRACT:
An instrument (10) is disclosed for an aircraft having a windshear warning system to vary the threshold alarm setting as a function of a thermodynamic property of the air and as a function of local geographic and seasonal conditions. Specifically, a function generator 16 and other circuitry is disclosed. The output from the function generator 16 and other circuitry is then added to a fixed threshold acceleraton signal to produce a threshold alarm signal which has a value that is a function of the temperature of the air, in a basic embodiment.
REFERENCES:
patent: 3427581 (1969-02-01), Hartman
patent: 3935460 (1976-01-01), Flint
patent: 4725811 (1988-02-01), Muller et al.
patent: 4905000 (1990-02-01), Bateman
patent: 4947165 (1990-08-01), Zweifel
patent: 4965572 (1990-10-01), Adamson
"The Crash of Delta Flight 191", NOAA Technical Report ERL-430-ESG, Caracena et al., Dec. 1986, pp. 20, 24.
Crosland Donnie L.
Sundstrand Data Control Inc.
Swarthout Brent A.
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