An automated system to measure the change in wing twist and bending under aerodynamic load in a wind tunnel is described. The basic instrumentation consists of a single CCD video camera and a frame grabber interfaced to a computer. The technique is based upon a single view photogrammetric determination of two dimensional coordinates of wing targets with a fixed (and known) third dimensional coordinate, namely the spanwise location. The measurement technique has been used successfully at the National Transonic Facility, the Transonic Dynamics Tunnel, and the Unitary Plan Wind Tunnel at NASA Langley Research Center. The advantages and limitations (including targeting) of the technique are discussed. A major consideration in the development was that use of the technique must not appreciably reduce wind tunnel productivity.
Automated Wing Twist And Bending Measurements Under Aerodynamic Load
19th AIAA Advanced Measurement and Ground Testing Technology Conference ; 1996 ; New Orleans, LA, United States
1996-01-01
Aufsatz (Konferenz)
Keine Angabe
Englisch
WING TWIST OPTIMISATION USING AERODYNAMIC SOLVERS OF DIFFERENT FIDELITY
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