Reduction of Cabin Noise Induced by Flow Around Air Refueling Pipe
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摘要: 为解决某型飞机加装固定式受油装置后引起的座舱噪声过大问题,通过空测摸清了飞行中噪声的变化规律,借助风洞试验等手段研究确定了噪声产生的机理,在此基础上提出了降噪改进措施,对受油管进行了修形改进设计.经试飞验证表明改进方案是成功的.Abstract: Fixed refueling pipe added to a fighter induces an obvious increase of the cabin noise. In order to reduce the noise, the changing laws of the cabin noise was tested in flight, then the reason of noise increase was investigated by flow field visualization tests and turbulent flow measurements in wind tunnel. After the design of refueling pipe was modified according to the results of present study, the cabin noise was obviously reduced.
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Key words:
- cabins /
- noise reduction /
- flow field visualization tests /
- air refueling pipe
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[1] Merzkirch W. Flow visualization[M]. New York:Academic Press, 1974 [2] 夏雪湔,邓学蓥. 工程分离流动力学[M]. 北京:北京航空航天大学出版社,1991 Xia Xuejian,Deng Xueying. Aerodynamics of separated in engineering[M]. Beijing:Beijing University of Aeronautics and Astronautics Press, 1991(in Chinese) [3] Gerrard J H. The mechanics of the formation region of vortices behind bluff bodies[J]. J Fluid Mech,1966,25:401~413 -
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