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Videogrammetric Model Deformation Measurement Technique for Wind Tunnel Applications (Invited)

By Danny A. Barrows


Videogrammetric measurement technique developments at NASA Langley were driven largely by the need to quantify model deformation at the National Transonic Facility (NTF). This paper summarizes recent wind tunnel applications and issues at the NTF and other NASA Langley facilities including the Transonic Dynamics Tunnel, 31-Inch Mach 10 Tunnel, 8-Ft high Temperature Tunnel, and the 20-Ft Vertical Spin Tunnel. In addition, several adaptations of wind tunnel techniques to non-wind tunnel applications are summarized. These applications include wing deformation measurements on vehicles in flight, determining aerodynamic loads based on optical elastic deformation measurements, measurements on ultralightweight and inflatable space structures, and the use of an object-to-image plane scaling technique to support NASA’s Space Exploration program. I

Year: 2009
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