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Proceedings Paper

Conditionally sampled two-dimensional optical wavefront measurements in the near-nozzle region of a heated axisymmetric jet
Author(s): Ronald J. Hugo; Lenore J. McMackin
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Paper Abstract

The time-evolution of optical degradation in the near nozzle region of a heated axisymmetric jet is measured using conditional sampling techniques. A novel linearized stability experiment is performed in order to identify the flowfield states most applicable for conditional sampling techniques. The results of the conditional sampling experiment exhibit a condition where two distinct flowfield states are evident. Potential explanations for the observance of these two distinct states are proposed, with the most probable explanation being due to pi-jumps that can arise between the phase of the excitation signal and the phase of the flowfield events.

Paper Details

Date Published: 14 October 1996
PDF: 12 pages
Proc. SPIE 2828, Image Propagation through the Atmosphere, (14 October 1996); doi: 10.1117/12.254173
Show Author Affiliations
Ronald J. Hugo, Air Force Phillips Lab. (United States)
Lenore J. McMackin, Air Force Phillips Lab. (United States)

Published in SPIE Proceedings Vol. 2828:
Image Propagation through the Atmosphere
Christopher Dainty; Luc R. Bissonnette, Editor(s)

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