Spinning disk calibration method and apparatus for laser Doppler

Details Spinning disk calibration method and apparatus for laser Doppler Spinning disk calibration method and apparatus for laser Doppler

1984-04-19

1986-07-15

Buczinski, Stephen C.

Optics: measuring and testing

Velocity or velocity/height measuring

With light detector

356 72, 356 73, 434 4, G01P 336, G01N 2100, G01S 900, G09B 900

Patent

active

046003010

ABSTRACT:
A method and apparatus for calibrating laser Doppler velocimeters having one or more intersecting beam pairs. These velocimeters measure fluid velocity by observing the light scattered by particles in the fluid stream. Moving fluid particulates are simulated by fine taut wires that are radially mounted on a disk that is rotated at a known velocity. The laser beam intersection locus is first aimed at the very center of the disk and then the disk is translated so that the locus is swept by the rotating wires. The radial distance traversed is precisely measured so that the velocity of the wires (pseudo particles) may be calculated.

REFERENCES:
patent: 4148585 (1979-04-01), Bargeron et al.
patent: 4154669 (1979-05-01), Goetz
patent: 4176950 (1979-12-01), Franke
patent: 4190367 (1980-02-01), Hard af Segerstad et al.
patent: 4227807 (1980-10-01), Pond et al.
patent: 4311383 (1982-01-01), Ohtsubo

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