Communications: electrical – Aircraft alarm or indicating systems – Land-based landing guidance
Patent
1984-06-13
1987-05-19
Rowland, James L.
Communications: electrical
Aircraft alarm or indicating systems
Land-based landing guidance
73178T, 340948, 340952, 340953, 340968, 342410, 342 33, 342 34, B64D 4508, B64F 118
Patent
active
046671960
ABSTRACT:
An active, electro-optical display system for use on fixed-wing, land-based airport runways, is disclosed for remotely guiding a pilot during visual approach and landing of an aircraft. Conventional Microwave Landing System (MLS) ground-transmitted data is air-derived on board the aircraft and data-linked to a ground receiver to produce a continuous digital data signal indicative of aircraft slant range, elevation and azimuth relative to the desired landing position. The resulting data signal is electrically coupled to a signal processor governed in accordance with control guidance laws to produce three discrete signals indicative of the magnitude and direction of the descent rate error, the flight path acceleration, and the lateral drift rate of the aircraft relative to the intended landing area. The three control signals are respectively coupled to display drivers which produce a plurality of drive signals for energizing individual light cells in horizontally oriented linear arrays located adjacent to the runway. The resulting light signals provide a continuous visual indication of the flight path acceleration and flight path angular error, in the elevation and azimuth planes, for appropriate corrective action by the pilot.
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Frank William F.
Rowland James L.
Swarthout Brent A.
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