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http://dx.doi.org/10.5139/JKSAS.2003.31.2.017

Combined Effects of Sideslip and AOA on the Vortical Flow of Delta Wing  

Lee, Gi Yeong (공군사관학교)
Son, Myeong Hwan (공군사관학교)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.31, no.2, 2003 , pp. 17-24 More about this Journal
Abstract
This paper presents results from steady wind tunnel test conducted on a $65^{\circ}$ delta wing at a root chord Reynolds number of $1.76{\times}10^6$. In these experiments, the wing was instrumented with 188 pressure taps, conjunction with powerful multi-channel data logging system, allowed the wing upper surface pressure distribution to be measured. Analysis indicates that the wing upper surface distribution can provide considerable insight into the comvined aerodynamic effects of angle of attack and sideslip on the wing. In a sideslip condition, the strength of the vortex on the windward side is much stronger than that of leeward side. This asymmetric pressure disstribution betwwen each side of wings result in a negative value of rolling moment. However, at a certatin range of angle of attck and sideslip angle(${\alpha}$=$24^{\circ}{\sim}36^{\circ}C$, ${\beta}$=$-5^{\circ}{\sim}-15^{\circ}C$) abrupt change of sign of rolling monent, rolling monent reversal, was observed.
Keywords
Delta Wing; Vortical Flow Field; Angle of Attack; Sideslip Angle; Rolling Moment Reversal;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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