Tomographic study of a supersonic aerodynamic object in free flight

V. A. Komissaruk; Nikolai P. Mende; L. N. Popov

doi:10.1117/12.131883

3 November 1992 Tomographic study of a supersonic aerodynamic object in free flight

V. A. Komissaruk, Nikolai P. Mende, L. N. Popov

Proceedings Volume 1843, Analytical Methods for Optical Tomography; (1992) https://doi.org/10.1117/12.131883
Event: Analytical Methods for Optical Tomography, 1991, Zvenigorod, Russian Federation

Abstract

The paper describes instrumentation and gas density reconstruction technique for tomographic investigations at a ballistic range. Due to ballistic experiments which are carried out in quiescent gas, the shape of a test pressure chamber is of no importance. This allows construction of a polyhedral working section with the plane windows and arrange around it some optical devices to obtain several projections of an object under study. As a means of flow visualization grating and polarization interferometers are chosen with pulse ruby lasers at light sources. The gas density reconstruction technique is based on gas density function expansion in finite series inside narrow rings of a considered plane flow cross-section. The mathematical statistics methods are applied to estimation of adequacy of determined mathematical models, importance of the expansion coefficients and confidence intervals of the gas density distributions. The technique is illustrated by density reconstruction results of the flow over a free flying supersonic cone at angles of attack.

Citation Download Citation

V. A. Komissaruk, Nikolai P. Mende, and L. N. Popov "Tomographic study of a supersonic aerodynamic object in free flight", Proc. SPIE 1843, Analytical Methods for Optical Tomography, (3 November 1992); https://doi.org/10.1117/12.131883

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