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Beam-modulation methods in quantitative and flow-visualization holographic interferometryHeterodyne holographic interferometry and time-average holography with a frequency shifted reference beam are discussed. Both methods will be used for the measurement and visualization of internal transonic flows where the target facility is a flutter cascade. The background and experimental requirements for both methods are reviewed. Measurements using heterodyne holographic interferometry are presented. The performance of the laser required for time-average holography of time-varying transonic flows is discussed.
Document ID
19870011771
Document Type
Conference Paper
Authors
Decker, Arthur J. (NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
September 5, 2013
Publication Date
November 1, 1986
Publication Information
Publication: AGARD Advanced Instrumentation for Aero Engine Components
Subject Category
ENGINEERING (GENERAL)
Distribution Limits
Public
Copyright
Other
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