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タイトルEffects of a ground vortex on the aerodynamics of an airfoil
本文(外部サイト)http://hdl.handle.net/2060/19890001484
著者(英)Krothapalli, A.; Leopold, D.
著者所属(英)Florida State Univ.
発行日1988-02-01
言語eng
内容記述An experimental investigation was carried out to study the aerodynamics of an airfoil with a rectangular jet exiting from its lower surface at fifty percent of the chord. The airfoil was tested with and without the influence of a ground plane. Surface static pressures were measured on the airfoil at jet to free stream velocity ratios ranging from 0 to 9. From these pressures, the variation of C sub L with velocity ratio was easily determined. The measurements indicated significant positive and negative pressure regions on the lower surface of the airfoil ahead of and after the nozzle exit respectively. The presence of a ground plane enhanced these pressure regions at low velocity ratios, but at a particular ratio for each plane location, a recirculation zone or vortex formed ahead of the jet resulting in decreased pressures and a drop in C sub L.
NASA分類AERODYNAMICS
レポートNO89N10855
権利No Copyright
URIhttps://repository.exst.jaxa.jp/dspace/handle/a-is/145009


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