The Optical Convolution Airspeed Indicator.
Final rept. 18 Feb-18 Aug 75,
BOLT BERANEK AND NEWMAN INC CAMBRIDGE MASS
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The Optical convolution Velocimeter is a simple, inexpensive instrument for the measurement of airspeed. A shadowgraph of a hot turbulent wake is projected onto a grating and the reflected light fluctuates at a frequency proportional to the velocity of convection. The theory of the instrument is presented and its feasibility for airspeed measurement is discussed. The instrument has been tested in a low speed wind tunnel, on a light aircraft and compared with a Laser Velocimeter. Author
- Flight Control and Instrumentation