Communications: electrical – Aircraft alarm or indicating systems – Flight alarm
Patent
1991-05-01
1993-06-22
Swarthout, Brent A.
Communications: electrical
Aircraft alarm or indicating systems
Flight alarm
7317011, 340949, 342 26, 364434, G08B 2300
Patent
active
052219240
ABSTRACT:
A wind shear alert system for low level horizontal wind shears is disclosed. The wind shear alert system is based upon a network of remote sensor stations placed near runways throughout the geographic area covered by an airport. An airport configuration file supplies numerous parameters related to the geometry and geography of the airport, as well as threshold values for divergence phenomena in the form of microbursts. Selected pairs, edges, and triples, triangles, of said network are monitored specifically to detect a divergence. Data from the various remote sensor stations is filtered to remove short term effects and adjust for missing data. A network mean is computed to which wind field measurement data and divergence analysis is compared. If a divergence in the form of a microburst or generic wind shear is detected, then the relative magnitude of the loss or gain in head wind to approaching aircraft is determined, as well as the location of the head wind. Alarm messages are issued to air traffic controller display screens which are then relayed to the pilot of an arriving or departing aircraft.
REFERENCES:
patent: 4295139 (1981-10-01), Arpino
patent: 4318076 (1982-03-01), Whitfield
patent: 4725811 (1988-02-01), Muller et al.
patent: 4812844 (1989-03-01), Kallstrom
patent: 4857922 (1989-08-01), Miller et al.
The Federal Triangle, "FAA Plans to Buy Wind-Shear Alert Devices", Washington Post, Oct. 17, 1983.
U.S. DOT FAA Report FAA-E-2697A, Mar. 6, 1989, "Low Level Wind Shear Alert System".
NCAR, "Enhanced LLWAS Algorithms", Jun. 28, 1988 Wilson Jr. and Cornman.
Swarthout Brent A.
University Corporation For Atmospheric Research
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