Process and apparatus for measuring travel time differences of u

Details Process and apparatus for measuring travel time differences of u Process and apparatus for measuring travel time differences of u

1982-08-17

1985-01-15

Goldstein, Herbert

Measuring and testing

Volume or rate of flow

By measuring vibrations or acoustic energy

73597, 73601, G01F 166

Patent

active

044932170

ABSTRACT:
Laser beams are modulated by ultrasonic pulses transmitted through gaseous media as a means of determining flow field patterns and temperatures without disturbing the test media.

REFERENCES:
patent: 3836950 (1974-09-01), Bhuta et al.
patent: 4006627 (1977-02-01), Bossaert
patent: 4028938 (1977-06-01), Eck
patent: 4174634 (1979-11-01), Dory
Dragonette, "Schlieven Visualization of Radiation Caused by Illumination of lates with Acoustical Pulses", in Jour. Acous. Soc. Amer., vol. 3, part 2, 1972, 6/77.
Measurement of Vortices in Wind Tunnel Experiments by Use of Ultrasonic Pulses, I.C.I.A.S.F. Record, Sep. 1979, by R. H. Engler, H. Holst, D. W. Schmidt & R. Wulf (8 pages).

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