High-speed interferometric measurement of aerodynamic phenomena

Dean Shough; Osuk Y. Kwon; David F. Leary

doi:10.1117/12.18359

1 May 1990 High-speed interferometric measurement of aerodynamic phenomena

Dean Shough, Osuk Y. Kwon, David F. Leary

Proceedings Volume 1221, Propagation of High-Energy Laser Beams Through the Earth's Atmosphere; (1990) https://doi.org/10.1117/12.18359
Event: OE/LASE '90, 1990, Los Angeles, CA, United States

Abstract

The cross-sections of high-speed aerodynamic phenomena are presently measured by means of a system that interferometrically ascertains optical path length changes with high spatial resolution. Attention is given to the optical disturbance through an aerocurtain, and to the shock wave produced by a hypersonic projectile. While the slowest repetition rate of the laser, camera, and data recorder determines the time-frame rate, the combination of the camera and data recorder determines the spatial resolution. The technique is the spatial equivalent of phase-shifting interferometry. The real-time hardware employed is discussed.

Citation Download Citation

Dean Shough, Osuk Y. Kwon, and David F. Leary "High-speed interferometric measurement of aerodynamic phenomena", Proc. SPIE 1221, Propagation of High-Energy Laser Beams Through the Earth's Atmosphere, (1 May 1990); https://doi.org/10.1117/12.18359

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