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Vortex interaction and breakdown overdouble-delta wings

Published online by Cambridge University Press:  03 February 2016

S. L. Gai ,
M. Roberts ,
A. Barker ,
C. Kleczaj  and
A. J. Riley
S. L. Gai
Affiliation:
School of Aerospace & Mechanical Engineering, University of New South Wales, Canberra, Australia
M. Roberts
Affiliation:
School of Aerospace & Mechanical Engineering, University of New South Wales, Canberra, Australia
A. Barker
Affiliation:
School of Aerospace & Mechanical Engineering, University of New South Wales, Canberra, Australia
C. Kleczaj
Affiliation:
School of Aerospace & Mechanical Engineering, University of New South Wales, Canberra, Australia
A. J. Riley
Affiliation:
School of Aerospace & Mechanical Engineering, University of New South Wales, Canberra, Australia
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Abstract

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Modern high-speed aircraft, especially military, arevery often equipped with single or compound deltawings. When such aircraft operate at highangles-of-attack, the major portion of the lift issustained by streamwise vortices generated at theleading edges of the wing. This vortex-dominatedflow field can breakdown, leading not only to lossof lift but also to adverse interactions with otherairframe components such as the fin or horizontaltail. The wind tunnel and water studies describedherein attempt to clarify the fluid mechanics ofinteraction between the strake and wing vortices ofa generic 76°/40° double-delta wing leading tovortex breakdown. Some studies of passive controlusing fences at the apex and kink region are alsodescribed. Various diagnostic methods-laser sheetflow visualisation, fluorescent dyes, and pressuresensitive paints have been used.

Information

Type
Research Article
Information
The Aeronautical Journal , Volume 108 , Issue 1079 , January 2004 , pp. 27 - 34
Copyright
Copyright © Royal Aeronautical Society 2004 

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