Communications: electrical – Aircraft alarm or indicating systems – Flight alarm
Patent
1987-04-06
1990-04-03
Orsino, Joseph A.
Communications: electrical
Aircraft alarm or indicating systems
Flight alarm
340963, 342389, 364433, G08B 2300
Patent
active
049144367
ABSTRACT:
A ground proximity warning system is disclosed which can recognize when an aircraft is on a final approach to an airport without utilizing a landing flap signal input. Airports together with the surrounding terrain topography are modeled by a simple geometric shape, such as, an inverted truncated cone, and stored on-board the aircraft. The system uses navigational data to determine the distance of the aircraft from the geometric model. Once the aircraft is determined to be within the area defined by the geometric model, the system provides an enabling envelope indicative that the aircraft is on a final approach for enabling various ground proximity warning systems. Also disclosed is a system for altering the enabling envelope as a function of the aircraft's alignment with a particular runway.
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patent: 4567483 (1986-01-01), Bateman et al.
patent: 4646244 (1987-02-01), Bateman et al.
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patent: 4684948 (1987-08-01), Bateman
IFR, Apr. 1987, vol. 3, No. 4, "IFR Flight with the New Lorans", Jeff Parnau, pp. 1-8.
Aviation Consumer, "Loran Database Comparison", Jul. 1, 1987, pp. 9-14.
Bateman Charles D.
Grove Michael M.
Orsino Joseph A.
Sundstrand Data Control Inc.
Swarthout Brent A.
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