Techniques and apparatus employed by ONERA researchers at Mondane to obtain an accuracy of 0.0001 in drag measurements on scale models of transport aircraft are described. Emphasis is placed on cruise flight configurations for the Airbus, and on the computational methods applied to correct the data for scale models to account for wind tunnel effects, as opposed to aircraft in actual flight. Model design, the mounts used, calibration of the balances and the angle of attack, and the data acquisition and treatment systems are summarized. Methods used to offset the thermal friction, wall and support effects on the flowfield are discussed.
Recent Progress in the Measurement of the Drag Coefficients of Models of Transport Aircraft in a Wind Tunnel
1987
57 pages
Report
Keine Angabe
Englisch
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