Thermal gradient compensator for fluid rotor gyroscopic apparatu

Details Thermal gradient compensator for fluid rotor gyroscopic apparatu Thermal gradient compensator for fluid rotor gyroscopic apparatu

1984-10-29

1986-08-05

Martin, Jr., William D.

Geometrical instruments

Indicator of direction of force traversing natural media

Gyroscopically controlled or stabilized

33316, 33327, 74 541, 73497, G01C 1902

Patent

active

046034838

ABSTRACT:
A fluid sphere gyroscope is used as the north-seeking sensing element in a gyrocompass. A sensor responsive to angular deviation of the gyroscope from the horizontal provides a tilt signal which is used to energize heating elements located along the independent spin axis of a rotating fluid mass. Application of a thermal gradient along the spin axis of the fluid mass causes a controlled precession of the gyroscope, thereby compensating for bias and acceleration sensitive drift errors and precessing the gyroscope about a vertical axis in a controlled manner. Rotary transformers permit inductive coupling of the heating elements to the tilt signal and to a power source with minimal disturbing torques.

REFERENCES:
patent: 3058359 (1962-10-01), Wing
patent: 3186240 (1965-06-01), Daubert, Jr.
patent: 3200653 (1965-08-01), Wing
patent: 3813946 (1974-06-01), Robbin, Jr. et al.

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