实验流体力学Issue(5)：78-83,6.DOI:10.11729/syltlx20150035
声衬试验段环境下航空声学定位试验技术研究
Investigation of aeroacoustic localization technique in lining test section
陈宝 1李周复 1谭啸 1李元首 1邵天双 1张雪 1姜涛1
作者信息
- 1. 中国航空工业空气动力研究院，哈尔滨 150001
- 折叠
摘要
Abstract
To meet the requirement of aeroacoustic localization experiment for civil aircrafts like C919 and MA700 in aero-acoustic wind tunnel tests,a liner test section featuring phased ar-ray beamforming algorithm and diagonal removal deconvolution was adopted to deal with the high background noise and flow interference to microphones in the closed test section.MA60 model test was carried out for validation.Test results show that the acoustic liner is in favour of micro-phone phased array and line array installation in the closed test section,and the background noise is reduced to be about 5 ~10dB which is lower than that in traditional closed test sections.The sound pressure level and trend found in the localization tests are reasonable.Judging from the re-sults,FL9 is capable of locating source and taking aeroacoustic experiments of airframe source lo-calization,noise reduction technique validation in the development of civil aircrafts.关键词
航空声学/定位试验/声衬试验段/风洞试验/波束形成Key words
aeroacoustics/source localization/lining test section/experiment in wind tunnel/beamforming分类
数理科学引用本文复制引用
陈宝,李周复,谭啸,李元首,邵天双,张雪,姜涛..声衬试验段环境下航空声学定位试验技术研究[J].实验流体力学,2015,(5):78-83,6.
