一种APU进气消音器声衬结构优化设计  

Optimization design of acoustic liner structure for APU intake muffler

作　　者：郝曦昕 HAO Xixin(Shanghai Aircraft Design and Research Institute,Shanghai 201210,China)

机构地区：[1]上海飞机设计研究院,上海201210

出　　处：《民用飞机设计与研究》2025年第1期49-56,共8页Civil Aircraft Design & Research

摘　　要：针对民机辅助动力装置(APU)进气噪声高频主导的特点,基于金属丝网穿孔板型声衬结构,分析了在设计空间下,各个声衬结构参数对传递损失的影响趋势。基于正交试验优化原理,利用piening’s经验公式建立了APU进气消音器声学模型,并在此基础上对声衬结构的穿孔板厚度、穿孔板直径、穿孔板穿孔率、金属丝网直径、金属丝网间距和蜂窝芯厚度进行优化设计。正交试验结果表明,在设计空间下,优化后的声衬结构可将总声功率级从114 dB降低至102 dB,降噪效果明显。Based on the high-frequency dominant characteristics of air intake noise in the auxiliary power unit(APU)of civil aircraft,and based on the metal wire mesh perforated plate type acoustic lining structure,the influ⁃ence trend of various acoustic lining structural parameters on transmission loss in the design space was analyzed.Based on the principle of orthogonal experimental optimization and using Piening’s empirical formula,an acoustic model of the APU intake muffler was established.Based on this,the perforated plate thickness,perforated plate di⁃ameter,perforated plate perforation rate,metal wire mesh diameter,metal wire mesh spacing,and honeycomb core thickness of the acoustic lining structure were optimized and designed.The orthogonal experimental results show that under the design space,the optimized sound lining structure can reduce the total sound power level from 114 dB to 102 dB,and the noise reduction effect is significant.

关 键 词：辅助动力装置 声衬 传递损失 正交优化设计 

分 类 号：V239[航空宇航科学与技术—航空宇航推进理论与工程]