Study on the impact of Gurney flap parameters on rotor performance improvement

At present, most of the research on installing Gurney flaps is focused on two-dimensional airfoils. The three-dimensional blade model is established to investigate the influence of different Gurney flap parameters on rotor aerodynamic performance. Firstly, a three-dimensional numerical method for ro...

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Bibliographic Details
Published inHangkong Gongcheng Jinzhan Vol. 16; no. 3; pp. 172 - 180
Main Authors LIU Shaoteng, LIU Xiangnan, SHAO Tianshuang, WANG Puyuan
Format Journal Article
LanguageChinese
Published Editorial Department of Advances in Aeronautical Science and Engineering 01.06.2025
Subjects
aerodynamic characteristics
gurney flap
helicopter
hover
mechanism study
parameter analysis
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Summary:At present, most of the research on installing Gurney flaps is focused on two-dimensional airfoils. The three-dimensional blade model is established to investigate the influence of different Gurney flap parameters on rotor aerodynamic performance. Firstly, a three-dimensional numerical method for rotor aerodynamic characteristics with Gurney flap is established, and verified with typical experimental data. Then, the effects of different lengths,heights, and radial positions of the Gurney flap on the aerodynamic performance of the rotor are analyzed. Finally,by analyzing the pressure distribution on the blade surface, the pressure coefficient at the Gurney flap location, and changes in streamlines after installing the Gurney flap on the blade, the lift augmentation mechanism of the rotor blade equipped with the Gurney flap is preliminarily explored. The results show that when the Gurney flap height is 2%c, the length is 0.2R, and the center position is 0.7R, the rotor thrust is increased by 14.15%. The double
ISSN:1674-8190
DOI:10.16615/j.cnki.1674-8190.2025.03.18