Hostname: page-component-7f64f4797f-d7bbv Total loading time: 0 Render date: 2025-11-04T15:15:09.475Z Has data issue: false hasContentIssue false
  • English
  • Français

Understanding and countering the swirl in S-ducts: tests on the sensitivity of swirl to fences

Published online by Cambridge University Press:  04 July 2016

J. Seddon
Get access Rights & Permissions [Opens in a new window]

Summary

Wind tunnel tests have been made on the effect of bottom wall and sidewall fences of various sizes and combinations in reducing the swirl of an S-duct at high angle of attack. It is shown that large reductions can be made: in some cases the swirl is eliminated or even reversed. Fences of modest size can be chosen to combine a large swirl reduction with an improvement of the total pressure distortion at high incidence and only a small effect on mean pressure recovery at low incidence. Some further observations are made on the nature of the general swirl phenomenon.

Information

Type
Research Article
Information
The Aeronautical Journal , Volume 88 , Issue 874 , April 1984 , pp. 117 - 127
Copyright
Copyright © Royal Aeronautical Society 1984 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Article purchase

Temporarily unavailable

Footnotes

*

Aeronautical consultant

References

1. Stocks, C. P. and Bissinger, N. C. The design and development of the Tornado engine air intake. Paper No 10. AGARD FT) Panel Symposium, Toulouse, France, May 1981.Google Scholar
2. Aulehla, F. Intake swirl — a major disturbance parameter in engine/intake compatibility. Paper to 13th Congress of ICAS/ AIAA, Seattle USA, August 1982.Google Scholar
3. Guo, R. W. and Seddon, J. An investigation of the swirl in an S-duct. The Aeronautical Quarterly, February 1982.Google Scholar
4. Guo, R. W. and Seddon, J. The swirl in an S-duct of typical air intake proportions. The Aeronautical Quarterly, May 1983.Google Scholar
5. Guo, R. W. and Seddon, J. Swirl characteristics of an S-shaped air intake with both horizontal and vertical offsets. The Aeronautical Quarterly, May 1983.Google Scholar
6. Bacon, L. D. and Magowan, J. M. An investigation into antiswirl devices for S-shaped air intakes. University of Bristol, Department of Aeronautical Engineering Report No 293, June 1983 — unpublished.Google Scholar
7. Unpublished research results by British Aerospace.Google Scholar