| 摘要: |
| 对一个涡轮喷气发动机试车台噪声的产生、特性和传播进行了较详细的分析,对噪声控制进行了多方案的比较.介绍了采用双层金属做孔板消声元件所组成的厚、薄两种板式消声组件的声学性能,及其消声装置对发动机试车产生的140dB(A)以上的宽频带噪声的控制效果,提供具有实际使用价值的第一手资料. |
| 关键词: 燃气涡轮发动机 地面试车台 噪声 控制 |
| DOI： |
| 分类号: |
| 基金项目: |
|
| NOISE CONTROL USED FOR TURBOJET ENGINE TEST BENCH |
|
Zhao Jujun
|
|
The 31st Research Institute
|
| Abstract: |
| A detail discusion is presented in the paper on the noise making propagation and its characterestic at a turbojet engine test bench. A Comparison of various design of noise control is made. The noise-reduction performance of thick or thing plate assembly which qonsists of bilayer metal plate unit with multiple tiny hole is also given in the paper. With useful first-hand data, the noise-reduction effect of a device on wide-frequeney-band, 140 dB(A) noise made during engine test is discussed. |
| Key words: Gas turbine engine Ground test bench Noise Control |
