Quantitative Applications of Holographic Interferometry to Wind-Tunnel Testing,
NAVAL ORDNANCE LAB WHITE OAK MD
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Holographic interferometry was successfully applied to a large-scale wind tunnel 40-cm x 40-cm test section experiment on a three-dimensional flow field. The laser interferometer was set up in a schlieren bench with a pulsed-ruby laser as the light source. Both the object beam and the reference beam were collimated. The conventional double-exposure, off-axis operation was used to produce interferograms. A 15-degree half-angle opaque cone at zero and 16.5 degrees yaw in a M 2 free stream provided the flow field for the investigation. The aerodynamic conditions were such that flow field was largely inviscid.
- Test Facilities, Equipment and Methods
- Fluid Mechanics