航空涡扇发动机喷气噪声动态等值线估计  

Contour Estimation of Jet Dynamic Noise of Aero-turbofan Engine

作　　者：闫国华[1] 马骞 YAN Guo-hua;MA Qian(Aeronautical Engineering College, Civil Aviation University of China,Tianjin 300300,China)

机构地区：[1]中国民航大学航空工程学院,天津300300

出　　处：《科学技术与工程》2020年第16期6644-6649,共6页Science Technology and Engineering

基　　金：中央高校基金(3122017048)。

摘　　要：主流民航涡扇飞机在起飞阶段,发动机喷气噪声是噪声贡献最大的噪声源。飞机适航取证过程中对噪声适航有明确的要求。民用航空涡扇发动机的研制与制造,不仅需要考虑符合噪声适航标准,还需考虑起飞时对机场周围社区的噪声影响。由发动机喷气噪声动态预测并绘制其在地面的等值线,不仅可以提前掌握发动机的噪声适航性,还能了解喷气噪声对机场周围社区的影响。基于Stone预测模型,利用有效感觉噪声级表示噪声的动态值,开发MATLAB程序,完成对特定机型的动态噪声预测并绘制动态噪声等值线。Engine jet noise is the biggest noise source in the take-off phase of mainstream civil aviation turbofan aircraft.The development and manufacture of civil aviation turbofan engine should take both the noise airworthiness standard and the noise on the community around the airport during takeoff into consideration.By dynamically predicting the jet noise of the engine and plotting its contour lines on the ground,the airworthiness of the engine could be obtained in advance,and the influence of jet noise on the community around the airport could be identified.Based on the Stone prediction model,the dynamic noise prediction for specific models was designed and their dynamic noise contour was draw.The MATLAB was developed to complete the prediction,and the effective sense noise level was used to represent the dynamic value of the noise.

关 键 词：涡扇发动机 喷气噪声 动态噪声 有效感觉噪声级 等值线 

分 类 号：V216.54[航空宇航科学与技术—航空宇航推进理论与工程]