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http://dx.doi.org/10.5139/JKSAS.2006.34.8.016

Effects of Strake Planform on the Vortex Flow of a Double-Delta Wing  

손명환 (포항공과대학교)
정형석 (공군사관학교)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.34, no.8, 2006 , pp. 16-23 More about this Journal
Abstract
The effects of strake planform shapes on the vortex formation, interaction, and breakdown characteristics of double-delta wings were investigated through pressure measurements of upper wing surface and off-surface flow visualization. Three different shapes of strakes were attached to a delta wing respectively to form double-delta wing configurations and tested in a medium-sized subsonic wind tunnel. The results of the pressure measurements indicated that the strake planform having a higher sweep angle generated more concentrated vortex systems at upstream locations, which, however, tended to diffuse and break down much faster at the downstream locations. It was also found from the off-surface visualization results that the cause for the vortex concentration was due to the acceleration of coiling and merging processes between the wing and strake vortices.
Keywords
Double Delta-wing; strake planform shape; Visualization; wing-surface pressure measurement;
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