A real time interferometry system for unsteady flow measurementsA simple real-time interferometer system was developed for use in dynamic stall and other unsteady flow research at compressible flow speeds. A conventional schlieren system was modified to operate as a point diffraction interferometer. The implementation of this interferometer is discussed, and results of trials with different point diffractors are presented in this paper. The performance of the interferometer under various flow conditions was investigated. Results are presented which show the effects of the interferometer parameters such as pinhole size and pinhole-plate optical density on the performance of the system.
Document ID
19920071725
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Brock, N. J. (Aerometrics, Inc. Sunnyvale, CA, United States)
Chandrasekhara, M. S. (NASA Ames Research Center Moffett Field; U.S. Naval Postgraduate School, Monterey, CA, United States)
Carr, L. W. (U.S. Army, Aeroflightdynamics Directorate; NASA, Ames Research Center Moffett Field, CA, United States)
Date Acquired
August 15, 2013
Publication Date
January 1, 1991
Subject Category
Instrumentation And Photography
Meeting Information
Meeting: ICIASF ''91 - International Congress on Instrumentation in Aerospace Simulation Facilities