行星大气声探测平台声学风洞吸声材料的选用  

Selection of sound-absorbing materials for acoustic wind tunnel in planetary atmospheric acoustic detection platform

作　　者：万任新 张振龙 杨晓超 汤晓忱 沈旭晨 尹铫[4] WAN Renxin;ZHANG Zhenlong;YANG Xiaochao;TANG Xiaochen;SHEN Xuchen;YIN Yao(National Space Science Center,Chinese Academy of Sciences,Beijing 100190,China;University of Chinese Academy of Sciences,Beijing 101499,China;Beijing CA Acoustic Co.Ltd.,Beijing 100086,China;Institute of Acoustics,Chinese Academy of Sciences,Beijing 100190,China)

机构地区：[1]中国科学院国家空间科学中心,北京100190 [2]中国科学院大学,北京101499 [3]北京科奥克声学技术有限公司,北京100086 [4]中国科学院声学研究所,北京100190

出　　处：《航天器环境工程》2023年第3期283-288,共6页Spacecraft Environment Engineering

基　　金：中国科学院“十三五”科教基础设施建设项目(编号:E029000101)。

摘　　要：建立具备声学测试环境的行星大气声探测平台对深空探测具有重要意义,而风洞吸声材料的选用对声学测试环境消声能力的构建至关重要,需要吸声材料具备耐低温性能及在经历高真空后在低压环境下应用的能力。文章针对行星大气声探测平台声学风洞对吸声材料的选用要求,以平均吸声系数α>0.5为标准选取了3种纤维类候选吸声材料,对它们的耐低温性能、在200~6300 Hz频率范围内的吸声性能及在真空下的放气速率进行对比;确定无胶长纤维白色玻璃棉作为声学风洞吸声材料,并进一步验证了其应用于行星大气声探测平台声学风洞的可行性。The establishment of a planetary atmospheric acoustic platform with an acoustic testing environment is of great significance for deep space exploration.The selection of wind tunnel sound-absorbing materials is crucial for the construction of anechoic capacity in the acoustic testing environment.Soundabsorbing materials are required to have low temperature resistance and the ability to be used in low pressure after experiencing high vacuum.In this paper,for the requirements of sound-absorbing materials for the acoustic wind tunnel of the planetary atmospheric acoustic detection platform,three fiber candidates were selected with the average sound absorption coefficientαgreater than 0.5.Their low-temperature resistance,sound-absorbing performance in the frequency range of 200-6300 Hz and outgassing rate under vacuum were compared.The nonadhesive long fiber white glass wool was determined as the sound-absorbing material for acoustic wind tunnel,and its feasibility in the acoustic wind tunnel for planetary atmospheric acoustic detection platform was further verified.

关 键 词：行星大气声探测 声学风洞 吸声材料 试验验证 

分 类 号：TB34[一般工业技术—材料科学与工程]