Miniature electro-optical air flow sensor

Details Miniature electro-optical air flow sensor Miniature electro-optical air flow sensor

1983-04-14

1984-12-04

Woodiel, Donald O.

Measuring and testing

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G01C 2110, G01C 2300

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active

044856717

ABSTRACT:
A sensor for measuring flow direction and airspeed that is suitable, because of its small size, for rapid instrumentation of research airplanes. A propeller driven sphere rotating at a speed proportional to airspeed presents a reflective target to an electro-optical system such that the duty cycle of the resulting electrical output is proportional to yaw angle and the frequency is proportional to airspeed.

REFERENCES:
patent: 3364741 (1968-01-01), Hickox

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