20 October 1998 Direct measurements of aero-optical effects in the Technion Supersonic Wind Tunnel
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Abstract
This paper describes the approach applied at the Technion to investigate the aero-optical effect in supersonic flow conditions. This approach consists of a numerical analysis of the problem (global/local/parametric) accompanied by an experimental effort. The experimental effort ranges from the flow-field structure visualization (shocks, shear and boundary layers, etc.) to optical measurements of gas density gradient distributions along a diagnostic optical beam. Measurements of flow parameters, such as pressure and temperature are being carried for the purpose of validation and calibration of the numerical calculations. The next stage of the experiments will include direct optical distortion measurements. The above mentioned approach aims at supplying concise information for understanding the mechanisms of the aero-optical effects. It and allows future development of prediction and correction methods, in order to modify the acquired optical information.
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Alexander Lessin, Alexander Lessin, Daniel Levin, Daniel Levin, Viktoria Suponitsky, Viktoria Suponitsky, Gregory R. Toker, Gregory R. Toker, "Direct measurements of aero-optical effects in the Technion Supersonic Wind Tunnel", Proc. SPIE 3432, Artificial Turbulence for Imaging and Wave Propagation, (20 October 1998); doi: 10.1117/12.327970; https://doi.org/10.1117/12.327970
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