日本航空宇宙学会論文集
Online ISSN : 2432-3691
Print ISSN : 1344-6460
ISSN-L : 1344-6460
論文
構造物のある地面近傍でホバリングするヘリコプタロータの空力性能に対する横風の影響
糸賀 紀晶井星 正氣下斗 米理
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ジャーナル 認証あり

2014 年 62 巻 1 号 p. 9-14

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Experimental studies are conducted to investigate influence of crosswind on the aerodynamic performance of helicopter rotor hovering in close proximity to the ground with a structure. Experimental parameters are rotor height and relative wind velocity to the rotor and structure. Wind directions considered in this study are the following: 1) wind blows from the structure side to the rotor side, 2) wind blows from the rotor side to the structure side and 3) wind blows parallel to the rotor and structure. In experiments, the rotor torque is measured for various combinations of these parameters while adjusting the collective pitch angle to make the rotor thrust constant. In this paper, the torque coefficient of rotor and collective pitch angle of rotor blade are shown. Experimental results show that behavior of torque coefficient varies in various ways according to combinations of these parameters and the torque coefficient on low speed crosswind condition increases without depending on wind direction compared to that of Out of Ground Effect case.

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© 2014 The Japan Society for Aeronautical and Space Sciences
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