吴斌,杨小军,韩峰,武戎戎.民用飞机客舱舱门啸叫问题研究[J].民用飞机设计与研 究,2020(2):6-10WU Bin*YANG XiaojunHAN FengWU Rongrong.[J].Civil Aircraft Design and Research,2020,(2):6-10.
民用飞机客舱舱门啸叫问题研究
  
DOI:10.19416/j.cnki.1674-9804.2020.02.002
中文关键词:民用飞机  客舱舱门  啸叫  填角密封
英文关键词:civil aircraft  cabin door  howling  fillet seal
基金项目:
作者单位
吴斌,杨小军,韩峰,武戎戎 上海飞机设计研究院上海 201210 
中文摘要:针对民用飞机客舱舱门啸叫的问题,提出一种适用解决该问题的方法。在对民用飞机客舱舱门啸叫机理研究的基础上,分析此啸叫机理种类。针对飞机外表面凹腔在高速飞行下产生凹腔啸叫噪声问题,以某型民用飞机客舱舱门为研究对象,建立了该种构型客舱舱门啸叫凹腔声共振模型,通过分析一个完整飞行循环客舱舱门区域噪声音频文件,得到客舱舱门啸叫的频率及声压级,根据飞行参数及凹腔声共振模型计算引起啸叫噪声的凹腔几何尺寸,与客舱舱门区域存在的凹腔尺寸逐一对比,确定导致啸叫噪声的凹腔。最后,根据啸叫凹腔的结构形式提出了一种客舱舱门啸叫问题处理方法。试验结果表明,所提的方法用于解决客舱舱门啸叫问题是可行的。
英文摘要:Aiming at the problem of cabin door howling in civil aircraft, this paper proposes a solution to solve the howling problem of the cabin door for civil aircraft. Based on the research on the mechanism of the cabin doors howling for civil aircraft, the types of the cabin door howling mechanism for civil aircraft were analyzed. In order to solve the problem of cavity howling noise caused by the cavity on the outer surface of the aircraft in high-speed flight, the cabin door for some civil aircraft was taken as a research object, the acoustic resonance model of this kind of cabin door cavity howling was established. By analyzing the sound frequency file of the cabin door area in a complete flight loop, the frequency and sound pressure level of cabin door howling were obtained. According to the flight parameters and the cavity acoustic resonance model, the cavity geometry causing the howling noise was calculated and compared with the cavity sizes existing in the cabin door area one by one to determine the cavity causing the howling noise. Finally, according to the structure of the howling cavity, a method to deal with the howling problem of the cabin door was proposed. The test results show that the proposed method is feasible to solve the howing problem of cabin doors.
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