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Proceedings Article

Conditionally sampled two-dimensional optical wavefront measurements in the near-nozzle region of a heated axisymmetric jet

[+] Author Affiliations
Ronald J. Hugo, Lenore J. McMackin

Air Force Phillips Lab. (USA)

Proc. SPIE 2828, Image Propagation through the Atmosphere, 50 (October 14, 1996); doi:10.1117/12.254173
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From Conference Volume 2828

  • Image Propagation through the Atmosphere
  • Christopher Dainty; Luc R. Bissonnette
  • Denver, CO | August 04, 1996

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.

© (1996) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.

Topics

Wavefronts
Citation

Ronald J. Hugo and Lenore J. McMackin
"Conditionally sampled two-dimensional optical wavefront measurements in the near-nozzle region of a heated axisymmetric jet", Proc. SPIE 2828, Image Propagation through the Atmosphere, 50 (October 14, 1996); doi:10.1117/12.254173; http://dx.doi.org/10.1117/12.254173


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