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随着航空运输业的发展,飞机的噪声问题日益引起人们的关注。开展航空声学试验研究的地面试验设备主要是航空声学风洞。笔者阐述了航空声学风洞声学设计的基本要求、应考虑的主要问题,提出了航空声学风洞声学设计的方法等。并将这些研究成果应用于引导风洞研制中,得到了在开口试验段风速80m/s时,气流外2m测点处背景噪声76.5dB(A)的结果。
With the development of air transport industry, the issue of aircraft noise has drawn increasing attention. The ground test equipment for carrying out aeronautical acoustics experimental research is mainly aeronautical acoustic wind tunnels. The author expounds the basic requirements of acoustics wind tunnel acoustic design, the main problems that should be considered, and proposes the method of acoustics wind tunnel acoustic design. The results of these studies are used to guide the wind tunnel development. The results show that the background noise of 76.5dB (A) at the 2m measuring point outside the gas flow when the wind speed is 80m / s in the open test section.