Apparatus for measuring rotation rates with acoustic waves

Details Apparatus for measuring rotation rates with acoustic waves Apparatus for measuring rotation rates with acoustic waves

1976-07-02

1977-12-06

Gill, James J.

Measuring and testing

Speed, velocity, or acceleration

Angular rate using gyroscopic or coriolis effect

G01P 342, G01C 2100

Patent

active

040610403

ABSTRACT:
A measuring apparatus for determining the rotational velocity of a solid erical or cylindrical object by propagating an acoustic wave through the object. The inward face of the surface of the object is used to reflect the wave, thereby causing it to make multiple transits through the object. Multiple transits provide a large time factor which allows the apparatus to achieve a high degree of sensitivity in measuring small rate changes and low rotation rates.

REFERENCES:
patent: 3232120 (1966-02-01), Ensley
patent: 3905235 (1975-09-01), Shaw

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