Communications: electrical – Aircraft alarm or indicating systems – Nonalarm flight indicator
Patent
1985-12-19
1988-05-10
Crosland, Donnie L.
Communications: electrical
Aircraft alarm or indicating systems
Nonalarm flight indicator
73178R, 350 66, 350486, 356248, G01C 902
Patent
active
047439033
ABSTRACT:
An artificial horizon device producing a projected light bar perceivable with peripheral vision. The device includes a scanner assembly with a pair of rapidly movable scanning mirrors each selectively pivotal about respective mutually perpendicular axes. A beam of light is directed upon a first of the pair of scanning mirrors for reflection upon the second of the mirrors, and thence to illuminate a surface for perception as a relatively movable horizontal reference line. A single adjustment mirror is interposed between the source of the light beam and the first of the scanning mirrors. The adjustment mirror is selectively movable about two mutually perpendicular axes each substantially intersecting the reflective plane of the adjustment mirror in order to set a selected point of incidence for the light beam upon the first of the scanning mirrors. In order to provide for selection of an area upon the surface which is to be illuminated by the scanned light beam independent of scanning of the beam by the scanning mirrors, the device may include a turntable member carrying the entire scanning assembly in pivotal movement about a first axis which is also substantially coincident with the reflective plane of the adjustment mirror. Such independent selection of the area to be illuminated may be further provided by a cradle member carried upon the turntable member and carrying the scanner assembly in pivotal movement about another axis perpendicular to the first axis, and which axis likewise substantially intersects the reflective plane of the adjustment mirror.
REFERENCES:
patent: 3085429 (1963-04-01), Majendie
patent: 4083239 (1978-04-01), Malcolm et al.
patent: 4127850 (1978-11-01), Vallins
patent: 4251126 (1981-02-01), Minoura et al.
patent: 4314154 (1982-02-01), Minoura et al.
patent: 4316648 (1982-02-01), Lissack
patent: 4349815 (1982-09-01), Spooner
patent: 4376572 (1983-03-01), Gijzen
patent: 4397555 (1983-08-01), Malcolm et al.
patent: 4406525 (1983-09-01), Itoh et al.
patent: 4468119 (1984-08-01), Hamar
patent: 4478482 (1984-10-01), Koester
patent: 4491383 (1985-01-01), Pera et al.
patent: 4560869 (1985-12-01), Hien et al.
patent: 4616226 (1986-10-01), Morley
patent: 4637695 (1987-01-01), Perkins
Instruments and Experimental Techniques, vol. 19, No. 1, pt. 2, pp. 279-281, Jan.-Feb. 1976, (published 8-76), Mamaev et al.
Crosland Donnie L.
McFarland James W.
Miller Terry L.
Swarthout Brent A.
The Garrett Corporation
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