Optics: measuring and testing – By dispersed light spectroscopy – Utilizing a spectrometer
Patent
1986-04-01
1988-03-29
Willis, Davis L.
Optics: measuring and testing
By dispersed light spectroscopy
Utilizing a spectrometer
G01C 1964
Patent
active
047339667
ABSTRACT:
A means for stressing the hub of a laser gyro dither mechanism is provided including a compression bolt passing through an aperture in the hub and having a nut threaded thereon for tightening against the hub until a desired dither frequency is achieved. In an alternative embodiment, the hub is stressed by placing it in tension using a rod within an aperture passing partway through the hub and having a set screw threaded into the aperture such that tightening the set screw forces the rod against the bottom of the aperture to place the hub in tension. The set screw is similarly tightened until a desired dither frequency is achieved. With either of these embodiments, dither frequencies of individual gyros can be adjusted after the gyro system is operational to separate dither frequencies to minimize mechanical frequency interference among the gyros.
REFERENCES:
patent: 3464657 (1969-09-01), Bullard
patent: 3775625 (1973-11-01), Brosch et al.
patent: 4115004 (1978-09-01), Hutchings et al.
patent: 4213705 (1980-07-01), Sanders
patent: 4309107 (1982-01-01), McNair
patent: 4597667 (1986-07-01), Curby et al.
Litton Systems Inc.
Turner S. A.
Willis Davis L.
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