Geometrical instruments – Indicator of direction of force traversing natural media – Gyroscopically controlled or stabilized
Patent
1984-01-05
1985-04-30
Stearns, Richard R.
Geometrical instruments
Indicator of direction of force traversing natural media
Gyroscopically controlled or stabilized
33328, 340974, G01C 1944, G08C 2100
Patent
active
045135096
ABSTRACT:
The invention relates to an aircraft attitude indicator having a gyro controlled spherical display with delineations of regularly spaced meridians that maintain a vertical orientation and spaced parallels transverse to the meridians, one of which is an equator that divides the sphere into upper and lower hemispheres and corresponds to a horizon. The lower hemisphere has triangular pointer indicia, each symmetrical to a delineated meridian and with a base on a parallel and an apex proximal to the equator. The pointer indicia cooperate with a reference delineation that is relatively fixed with respect to the aircraft and substantially centered on the display. The pointer indicium nearest the reference designates the "up" direction; those adjacent to it provide information about changes in aircraft attitude relative to "up" that will result from possible maneuvers from the existing attitude.
REFERENCES:
patent: 2262245 (1941-11-01), Moseley et al.
patent: 2779101 (1957-01-01), Chombard
patent: 2940176 (1960-06-01), Jessup
patent: 2941306 (1960-06-01), Uecker
patent: 3039200 (1962-06-01), Vibert
patent: 3263646 (1966-08-01), Arnold et al.
patent: 3516055 (1970-06-01), Snider
IEEE Spectrum, Jul. 1975, pp. 28 and 29.
Custin James R.
Nilles James E.
Saab-Scania Aktiebolag
Stearns Richard R.
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