涡喷、涡扇发动机试车台噪声分析

Analysis of turbojet and turbofan jet noise in aero engine test

航空发动机试车时产生的强烈噪声会形成大范围的环境污染。通过对涡轮喷气及涡轮风扇发动机试车噪声的采集和声功率谱分析,讨论发动机的主要噪声源和噪声的特征。试验结果表明:分析结论与理论经验一致。此次试验也为今后通过噪声进行故障诊断提供了经验。

The noise will pollute the environment seriously when the aero engines are tested. Through noise data collection and power spectrum analysis of turbojet and turbofan, the main noise source and characteristics of noise are discussed. The experiment result indicates that the theoretical analysis is in conforming to experimental analysis. The experiment also provides experience for noise based fault diagnosis.