Method and apparatus for aiding a landing aircraft

Details Method and apparatus for aiding a landing aircraft Method and apparatus for aiding a landing aircraft

1991-10-16

1994-02-15

Crosland, Donnie L.

Communications: electrical

Aircraft alarm or indicating systems

Land-based landing guidance

340951, 340953, 340955, 340956, 340555, 340557, 342 33, 342 54, B64F 120, G08G 500

Patent

active

052871045

ABSTRACT:
A method and apparatus for aiding a landing aircraft. Three differently-colored beams of laser light are produced and transmitted, one of the beams of laser light being transmitted in a plane containing the direction from which the aircraft is approaching. Another of the beams of light is transmitted on one side of the plane, and the third of the beams of light is transmit on the other side of the plane. The pilot of the aircraft can determine whether the aircraft is on the plane or to the one side or the other by the color of the light the pilot receives. If desired, at least one of the colored laser beams that is transmitted toward one side of the plane can be broken into a plurality of adjacent fan-shaped beams, the light in at least one of the fan-shaped beams being interrupted intermittently.

REFERENCES:
patent: 3279406 (1966-10-01), Ricketts et al.
patent: 3377617 (1968-04-01), Projector
patent: 4064424 (1977-12-01), Hergenrother
patent: 4170767 (1979-10-01), Tanner
patent: 4209768 (1980-06-01), Basov et al.

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