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A new method for the evaluation of slotted wind tunnel interference parameters applicable to subsonic oscillatory tests

Published online by Cambridge University Press:  04 July 2016

R. A. Streather
R. A. Streather*
Affiliation:
Department of Mechanical Engineering, Lanchester Polytechnic, Coventry
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Extract

Until a few years ago it was the practice to neglect lift interference on oscillatory model tests in high-speed subsonic wind tunnels, whatever the working section configuration. However, in 1960 Bratt and Wight discovered a large interference effect on the pitch damping derivative of an M-wing measured in the slotted working section of the 25 in x 20 in tunnel at the National Physical Laboratory. In 1964 Wight reviewed a number of oscillatory tests and showed that in many cases there were significant interference effects on both stiffness and damping derivatives when measured in slotted working sections.

Type
Technical Notes
Information
The Aeronautical Journal , Volume 76 , Issue 739 , July 1972 , pp. 443 - 447
Copyright
Copyright © Royal Aeronautical Society 1972 

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References

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