Effect of gurney flap on unsteady wake vortex

被引：0
|
作者：
Lee, L. [1 ]
Lee, T. [1 ,2 ]
机构：
[1] McGill University, Montreal, Que. H3A 2K6, Canada
[2] Department of Mechanical Engineering
来源：
Journal of Aircraft | 1600年 / 44卷 / 04期
关键词：
Full-span Gurney flap concept is applied to the passive control of the tip vortex generated behind an oscillating wing to potentially alleviate the severity of blade-vortex interaction (BVI) noise and vibration frequently observed during low-speed rotorcraft forward or descending flight. Dynamic variation of the critical vortex flow parameters; including the vortex trajectory; with Gurney flaps; of two different heights are discussed. A miniature triple hot-wire probe; calibrated in situ before the installation of the model; is used to measure the mean and fluctuating velocity components. The vortex is displaced vertically below and above the baseline wing with the presence of a Gurney flap and an inverted Gurney flap; respectively. The Gurney flap; regardless of the flap height; is considered to be most effective in increasing the core radius and circulation while the inverted Gurney flap is effective in reducing the peak tangential velocity and the peak vorticity;
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摘要：
Conference article (CA)
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页码：1398 / 1401
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