Gyro sensor coil with low-friction hub interface

Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system

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Details

25022719, 25022727, 356345, 385128, G01D 534, G01B 902

Patent

active

055458920

ABSTRACT:
A spool for receiving a fiber optic sensor coil includes a single, substantially-planar mounting flange and a central hub. The coil can be directly wound upon the hub. The coil is mounted transverse to the plane of the mounting flange and is unconfined in that direction as the surface of the hub is substantially non-adhesive with respect to the inner layer of the coil. This allows axial coil expansion with increases in temperature without generating gyro bias errors. The device is also substantially free from vibration-induced bias errors due to the relatively high resonant frequency (vis a vis environmental vibration) of the integral spool-plus-coil structure.

REFERENCES:
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patent: 5371593 (1994-12-01), Cordova et al.
Article, N. Frigo, "Compensation of Linear Sources of Non-Reciprocity in Saganc Interferometers", Fiber Optics and Laser Sensors I, Procs. SPIE, v. 412, p. 261 (1989).

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