Accession Number:

ADA330728

Title:

Optical Propagation Through a Turbulent Jet.

Descriptive Note:

Final Technical rept. 1 Mar 94-28 Feb 97

Corporate Author:

NEW MEXICO UNIV ALBUQUERQUE DEPT OF MECHANICAL ENGINEERING

Personal Author(s):

Report Date:

1997-09-01

Pagination or Media Count:

7.0

Abstract:

A fast optical tomography system has been used to investigate a heated round jet acoustically excited in axisymmetric and helical modes. This flow diagnostics reveals the development and interaction of large-scale vortices in the near-field region of the jet. In a complementary experimental study of prediction-based adaptive optics, Linear Stochastic Estimation of optical beam deflection produced by the jet has been used in an open-loop control system. a piezoelectric steering mirror wa controlled to minimize beam deflection based on temperature inputs. The results indicate that a multi-aperture adaptive- optic control system may be based on multi-point temperature measurements.

Subject Categories:

  • Electricity and Magnetism
  • Optics
  • Jet and Gas Turbine Engines

Distribution Statement:

APPROVED FOR PUBLIC RELEASE