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Some Comments on High-Lift Testing in Wind Tunnels with Particular Reference to Jet-Blowing Models

Published online by Cambridge University Press:  28 July 2016

A. Anscombe  and
J. Williams
A. Anscombe
Affiliation:
Royal Aircraft Establishment, Farnborough
J. Williams
Affiliation:
National Physical Laboratory, Teddington
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Summary

This paper considers some of the special problems of wind tunnel testing which arise in high-lift work. Discussion is confined to current experience in the R.A.E. and N.P.L. low-speed wind tunnels, and refers mainly to tests on blowing over flaps or jet-flaps. Comments are made on suitable size of model, methods of feeding compressed air into models without affecting balance readings, and general test technique. Methods of model construction are not specifically discussed.

Information

Type
Research Article
Information
The Aeronautical Journal , Volume 61 , Issue 560 , August 1957 , pp. 529 - 540
Copyright
Copyright © Royal Aeronautical Society 1957

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References

Note on page 533 * With a model mounted close to the tunnel wall (or floor), the air-bearing connector could of course be located outside the tunnel working section.

Note on page 539 * e.g. Luftfahrtforschung, Vol. 14, p. 564 (1937).

Note on page 539 * This is reasonable except when the difference between the blowing pressure pD and the free-stream pressure p0 is so small that it is of the same order as the difference between p0 and the local surface pressure on the model close to the nozzle exit.