地面効果翼の空力特性におよぼす翼型と翼端板の影響
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The influence of airfoil profile and wing-tip plate on wing in ground effect has been clarified by means of wind tunnel experiment. The aerodynamic force has been directly measured by the three-components force transducer, and the flow field has been measured by the particle image velocimetry (PIV). The characteristic of the aerodynamic force by the wing in ground effect was qualitatively as same as that of previous study. It is found from PIV measurement that the wing-tip vortex exists near the wing-tip without wing-tip plate. When the wing-tip plate is attached, the wing-tip vortex is away from the wing compared with that of no wing-tip plate. In addition, when the wing approaches the ground, the stagnation point of the leading edge moves in the downstream position, and the location of the stagnation point depends on the curvature of leading edge.
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