| 起降客机噪声源识别的平面阵设计 |
| |
| 引用本文： | 陈志菲,侯宏,孙进才,陈涛. 起降客机噪声源识别的平面阵设计[J]. 应用声学, 2011, 30(6): 427-434 |
| |
| 作者姓名： | 陈志菲 侯宏 孙进才 陈涛 |
| |
| 作者单位： | 西北工业大学自动化学院;西北工业大学航海学院 |
| |
| 基金项目： | 国家自然科学基金资助项目(No.60672136) |
| |
| 摘 要： | 针对起降客机的噪声源识别,给出了平面多臂对数螺旋阵的设计过程。多臂对数螺旋阵可以在较宽的分析频带内保持较小的主瓣宽度,同时平均旁瓣水平较低,从而具有良好的宽带噪声源识别性能,但其阵型设计中需要考虑的参数较多。本文以ARJ21客机起降过程中的主起落架噪声源识别为例,研究了多臂对数螺旋阵各参数对其噪声源识别性能的影响。所给出的阵列设计流程可以为飞行客机的噪声源识别,尤其是多子阵嵌套的平面阵设计提供参考。
|
| 关 键 词： | 噪声源识别 主瓣宽度 动态范围 多臂对数螺旋阵 |
Planar array design for noise source identifications of flyover aircraft |
| |
| CHEN Zhifei,HOU Hong,SUN Jincai and CHEN Tao. Planar array design for noise source identifications of flyover aircraft[J]. Applied Acoustics(China), 2011, 30(6): 427-434 |
| |
| Authors: | CHEN Zhifei HOU Hong SUN Jincai CHEN Tao |
| |
| Affiliation: | 1 School of Automation,Northwestern Polytechnical University,Xi’an 710072) (2 School of Marine Engineering,Northwestern Polytechnical University,Xi ’an 710072) |
| |
| Abstract: | The design of multi-arm logarithmic spiral array (MLSA) for noise sourceidentifications (NSI) of an approaching or taking off aircraft is presented. The MLSA has asmall beam width and low side lobe level in a wide frequency band which shows us a goodNSI performance. The array geometry of the MLSA is determined by six parameters. Weexplored their influences on the NSI performance with a MLSA design for the NSI of the mainlanding gear of ARJ21 in a flyover test. The design process gives a hand to the NSI of theairframe noise, especially for the planar array design with multiple subarrays in aeroacousticfield |
| |
| Keywords: | |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《应用声学》浏览原始摘要信息 |
|
点击此处可从《应用声学》下载免费的PDF全文 |
|
