基于平均飞行航迹的CCO减噪效用研究

Study on noise reduction efficiency of CCO based on average flight path

近年来,通过优化飞行程序降低机场飞机噪声影响成为机场环境保护的重要研究方向。文章首先建立了基于飞机“噪声−功率−距离”数据的噪声计算模型,介绍了平均飞行航迹以及连续爬升运行(Continuous Climb Operation,CCO)离场程序的相关理论,最后以大型国际机场为实例,使用飞机平均飞行航迹进行噪声预测,运用综合噪声模型计算出噪声影响面积并绘制噪声影响等值线图,比较了CCO离场相对常规的标准仪表离场(Standard Instrument Departure,SID)的降噪效果。结果表明,CCO离场程序可有效降低机场噪声影响,在高噪声级影响区域的降噪效果更佳。

In recent years,airport aircraft noise reduction by optimizing flight procedures has become an important research direction for airport environmental protection.In this paper,a noise calculation model based on aircraft"noise-power-distance"data is established,and the relevant theories of average flight path and continuous climb operation(CCO)are introduced.Finally,by taking a large international airport as an example,the aircraft average flight path is used for noise prediction,and the integrated noise model is used to calculate the noise impact area,then the noise impact contour map are drawn to compare the noise reduction effect of the CCO departure with that of the conventional standard instrument departure(SID).The results show that the CCO departure procedure can effectively reduce the impact of airport noise,and the noise reduction effect is better in high noise impact areas.