|
| Acoustic Performance Test on Nacelle Inlet Composite Material Annular Acoustic Liner |
| Received:July 11, 2020 Revised:August 11, 2020 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2020.09.018 |
| KeyWord:nacelle inlet composite material annular acoustic liner acoustic mode identification acoustic test |
| Author | Institution |
| GAO Xiang |
Laboratory of Aeroacoustics and Vibration Aviation Technology, Aircraft Strength Research Institute, Xi¢an , China |
| XU Jian |
Laboratory of Aeroacoustics and Vibration Aviation Technology, Aircraft Strength Research Institute, Xi¢an , China |
| XUE Dong-wen |
Laboratory of Aeroacoustics and Vibration Aviation Technology, Aircraft Strength Research Institute, Xi¢an , China |
| YAN Qun |
Laboratory of Aeroacoustics and Vibration Aviation Technology, Aircraft Strength Research Institute, Xi¢an , China |
| HUO Shi-yu |
Laboratory of Aeroacoustics and Vibration Aviation Technology, Aircraft Strength Research Institute, Xi¢an , China |
|
| Hits: |
| Download times: |
| Abstract: |
| The paper aims to test the acoustic characteristics of transmission loss of seamless composite acoustic liner test pieces with the rotating acoustic mode generation test system. Considering the actual potential application environment characteristic of acoustic liner in the aero-engine nacelle inlet, the seamless annular acoustic liner made of composite materials was designed and developed by the whole circle forming process and seamless stitching technology. Based on the spinning radial microphone array, the method and the test rig of acoustic mode test and identification were developed by applying in rotating acoustic mode generation test system. The corresponding mode test device was developed. The experimental results showed that the designed seamless composite acoustic liner has a good noise reduction effect under the target condition. The spinning radial microphone array can both identity the radial and circular acoustic mode and apparently reduce the microphones used. |
| Close |
|
|
|