Nd:YAG holographic interferometer for aerodynamic researchA holographic interferometer system has been installed in the NASA Ames 2- by 2-Foot Transonic Wind Tunnel. The system incorporates a modern 10 pps, Nd:YAG pulsed laser which provides reliable operation and is easy to align. The spatial filtering requirements of the unstable resonator beam are described, as well as the integration of the system into the existing schlieren system. A two-plate holographic interferometer is used to reconstruct flow field data. For static wind tunnel models, the single exposure holograms are recorded in the usual manner; however, for dynamic models such as oscillating airfoils, synchronous laser hologram recording is used.
Document ID
19840045213
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Craig, J. E. (Spectron Development Laboratories, Inc. Costa Mesa, CA, United States)
Lee, G. (NASA Ames Research Center Moffett Field, CA, United States)
Bachalo, W. D. (Complere, Inc. Palo Alto, CA, United States)