1 May 1990 High-speed interferometric measurement of aerodynamic phenomena
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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.
© (1990) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Dean Shough, Osuk Y. Kwon, 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); doi: 10.1117/12.18359; https://doi.org/10.1117/12.18359
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