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Vortex Interaction Characteristics of a Delta Wing/LEX  

이기영 (공군사관학교 기계공학과)
손명환 (공군사관학교 항공우주공학과)
Publication Information
Journal of the Korea Institute of Military Science and Technology / v.5, no.3, 2002 , pp. 77-86 More about this Journal
Abstract
An experimental study of the vortex interaction characteristics of a delta wing/LEX configuration was conducted in a wind tunnel using the micro water droplet and laser beam sheet visualization technique. The main focus of this study was to analyze the effect of the angle of attack and sideslip angle on the vortex interaction and vortex breakdown. These tests were accomplished at angles of attack between $16^{\circ}$ and $28^{\circ}$ and sideslip angle between $0^{\circ}$ and $-15^{\circ}$ at free-stream velocity of 6.2 m/s. Flow visualization data provide a description of the vortex interaction between LEX and wing vortices, and of the vortex breakdown. The introduction of LEX vortex stabilized the vortical flow, and delayed the vortex breakdown up to higher angle of attack. The vortex interaction and breakdown was promoted on the windward side, whereas they are suppressed on the leeward side.
Keywords
Delta Wing; LEX(Leading Edge Extension); Vortex Interaction; Vortex Breakdown; Sideslip Angle;
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Times Cited By KSCI : 1  (Citation Analysis)
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