Quantitative Applications of Holographic Interferometry to Wind-Tunnel Testing,

摘要

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.