直升机舱内主减速器噪声控制技术研究综述  

Overview of Control Technology for Helicopter Cabin Noise from Main Gearbox

作　　者：王风娇 李明强[1] 彭海锋 陆洋[2] WANG Fengjiao;LI Mingqiang;PENG Haifeng;LU Yang(China Helicopter Research and Development Institute,Jingdezhen 333001,China;College of Aerospace Engineering,Nanjing University of Aeronautics&Astronautics,Nanjing 210016,China)

机构地区：[1]中国直升机设计研究所,景德镇333001 [2]南京航空航天大学航空学院,南京210016

出　　处：《南京航空航天大学学报》2022年第2期179-190,共12页Journal of Nanjing University of Aeronautics & Astronautics

摘　　要：因主减速器引起的舱内中高频噪声是影响直升机乘坐舒适度的关键因素。本文从主减速器的噪声传递路径出发,梳理并总结了支撑结构、机舱壁板和声腔3方面的舱内噪声控制技术发展状况,包括被动、主动和半主动控制方法。研究结果表明,国外直升机型号主要依靠壁板阻振、隔声密封和舱内吸声等被动技术进行舱内降噪,但存在重量、经济性、控制效果等问题。基于支撑结构的减振技术为主减速器高效降噪提供了新思路,结合综合优化技术,已使某些直升机型号达到了商用飞机舱内噪声水平。中国在该领域的研究和应用较少,需根据国内直升机实际工程应用背景,在噪声传递机理、降噪设计、验证与优化等方面继续发展,形成适用于中国直升机型号研制的新方法和新思路。The comfort in helicopter cabin is significantly affected by the mid-and high-frequency noise caused by the main gearbox.Based on its noise transfer path,the development of cabin noise control technology is summarized in three aspects,including the supporting structure,the bulkhead and the internal cavity with passive,active and semi-active control methods.The results show that helicopter cabin noise in abroad is mainly controlled through the passive technologies such as damping vibration attenuation of panel,sound barrier with sealing,and sound absorption in cabin.However,some problems are appeared with respect to weight,economy,and limited control effect.The vibration reduction technology on the supporting structure has provided a new way for the efficient noise reduction of main gearbox,which has been combined with the comprehensive optimization to make some helicopters reach the cabin noise level of commercial aircraft.Nevertheless,the research and application of helicopter cabin noise control technology are inadequate in domestic.To obtain the new methods and ideas suitable for the helicopter development in China,the researches like the noise transmission mechanism,noise reduction design,verification and optimization should be further developed according to the realistic engineering application background of helicopters.

关 键 词：直升机 主减速器 噪声控制 传递路径 舱内噪声 

分 类 号：V275.1[航空宇航科学与技术—飞行器设计]