Communications: electrical – Aircraft alarm or indicating systems – Flight alarm
Patent
1991-12-02
1996-02-20
Swarthout, Brent A.
Communications: electrical
Aircraft alarm or indicating systems
Flight alarm
244181, 340969, 364433, G08B 2300
Patent
active
054932939
ABSTRACT:
A wind shear detection and alert system, compensated for the calibrated airspeed of the aircraft to minimize nuisance wind shear alerts. The wind shear detection and alert system (10) determines a reference airspeed as a function of flap position, with respect to a minimum maneuver airspeed signal (60) provided by a stall warning computer on the aircraft. The reference airspeed is subtracted from a calibrated airspeed signal (76) that has been filtered to remove minor variations in the signal using a Laplace filter (68). The differential airspeed is further filtered by another Laplace filter (78), producing a filtered differential airspeed signal (70), which the system uses to determine a delta threshold (48) to be applied in compensation for the aircraft airspeed to a wind shear alert reference signal. As the filtered differential airspeed increases, the delta threshold signal increases the absolute level of the wind shear alert threshold, reducing the likelihood of unnecessary wind shear alerts.
REFERENCES:
patent: 3327972 (1967-06-01), Greene
patent: 3569926 (1971-03-01), Korn et al.
patent: 3618002 (1971-11-01), Stinson
patent: 3947810 (1976-03-01), Bateman et al.
patent: 3988713 (1976-10-01), Bateman
patent: 4189777 (1980-02-01), Kuntman
patent: 4229725 (1980-10-01), Reilly
patent: 4347572 (1982-08-01), Berwick, Jr. et al.
patent: 4422147 (1983-12-01), Hanke
patent: 4593285 (1986-06-01), Miller et al.
patent: 4725811 (1988-02-01), Muller et al.
patent: 4728951 (1988-03-01), Johnson et al.
patent: 4797674 (1989-01-01), Zweifel et al.
patent: 4855738 (1989-08-01), Greene
Bonafe, J. L.; "Airbus Windshear Warning and Guidance System;" Williamsburg, Virginia; Oct. 20, 1988.
Hansen Rolf
Kim Susan C.
Ormiston Douglas S.
Swarthout Brent A.
The Boeing Company
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