航空学报 > 1996, Vol. 17 Issue (5): 87-89

用测量的叶片表面非定常压力预估直升机旋翼桨涡干扰(BVI)噪声

尹坚平, 胡章伟   

  1. 南京航空航天大学空气动力学系, 南京, 210016
  • 收稿日期:1995-03-17 修回日期:1995-08-03 出版日期:1996-10-25 发布日期:1996-10-25

PREDICTION OF ROTOR BLADE VORTEX INTERACTION NOISE FROM MEASURED UNSTEADY SURFACE PRESSURE OF BLADE

Yin Jianping, Hu Zhangwei   

  1. Aerodynamics Department, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016
  • Received:1995-03-17 Revised:1995-08-03 Online:1996-10-25 Published:1996-10-25

摘要: 利用最新发展的直升机旋翼气动声学程序计算了某模型旋翼桨涡干扰(BVI)噪声,叶片表面非定常压力脉动数据由最新实验获得。计算的声压时间历程和指向性与实验结果符合得非常好

关键词: 噪声预测, 声学测量, 气动噪声

Abstract: A newly developed helicopter rotor aeroacoustics code and newly obtained unsteady surface pressure data on the blade of a model helicopter rotor are used to predict rotor blade vortex interaction noise. Good to fair agreement of the predictions with wind tunnel results both in time history and in directivity of BVI noise has been obtained.

Key words: noise prediction, acoustic measurement, aerodynamic noise

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