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On the Breakdown at High Incidences of the Leading Edge Vortices on Delta Wings

Published online by Cambridge University Press:  04 July 2016

B. J. Elle
B. J. Elle*
Affiliation:
Saab Aircraft Company, Sweden
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Extract

In a recent article, H. Werlé, has described how the free spiral vortices on delta wings with leading edge separation suddenly expand if the incidence is increased beyond a critical value. His description conforms to a great extent with the results, arrived at during an English investigation of the same phenomenon (called the vortex breakdown), but the interpretations of the observations, suggested by the two sources, are different. Against this background it is felt that some further comments and some pertinent high speed observations, may be of interest.

Type
Technical Notes
Information
The Aeronautical Journal , Volume 64 , Issue 596 , August 1960 , pp. 491 - 493
Copyright
Copyright © Royal Aeronautical Society 1960

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References

1.Werlé, H. (1960). Sur l'eclatement des tourbillons d'apex d'une aile delta aux faibles vitesses. La Recherche Aeronautique, No. 74, Jan./Feb. 1960.Google Scholar
2.Elle, B. J. (1958). An investigation at low speed of the flow near the apex of thin delta wings with sharp leading edges. ARC 19,780—Perf. 1621-F.M. 2629, Jan. 1958.Google Scholar
3.Saab, Sweden. Unpublished transonic wind tunnel work on pointed wings.Google Scholar