Geometrical instruments – Indicator of direction of force traversing natural media – Gyroscopically controlled or stabilized
Patent
1978-04-10
1980-01-29
Martin, Jr., William D.
Geometrical instruments
Indicator of direction of force traversing natural media
Gyroscopically controlled or stabilized
G01C 1934
Patent
active
041853946
ABSTRACT:
Artificial horizon indicators are precise, gyroscopic flight instruments designed to furnish an aircraft pilot with an artificial indication of an aircraft pitch and roll attitude with respect to earth. Basically, such indicators include a gyro gimbaled within a frame which is fixed to the aircraft. Roll indicia is responsive to the gyro for rotation within a display window as a part of the frame about an axis parallel to the roll axis of the aircraft. A spherically shaped horizon indicating member is also responsive to the gyro for movement within the display window to remain parallel to the actual horizon during flight of the aircraft. The spherical horizon indicating member is pivotally mounted to the frame between the gimbal axis of the gyro and the roll indicia. The coupling of a horizon indicating member to the gyro includes a two stage three pin drive to present the aircraft pilot a uniform movement of the horizon indicating member for movement of the aircraft about the pitch axis.
REFERENCES:
patent: 2404603 (1946-07-01), Summers
patent: 2669786 (1954-02-01), Lynch
patent: 3197881 (1965-08-01), Burger
patent: 3579847 (1971-05-01), Winter
patent: 3589019 (1971-06-01), Culver
patent: 3792427 (1974-02-01), Younkin
patent: 3827157 (1974-08-01), Owens
patent: 3864838 (1975-02-01), Owens et al.
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