摘要
机场终端区飞行航迹出现的不均匀横向分散对该区域飞机噪声影响显著,飞机噪声预测时航迹的横向分散特性不应被忽略。采用航空环境设计工具(Aviation Environmental Design Tool,AEDT)对不均匀横向分散航迹飞行下的飞机噪声进行建模预测非常复杂、耗时。为解决该问题,提出一种基于AEDT的横向分散航迹飞行下飞机噪声的快速预测方法。对于一簇横向分散航迹,该方法仅需对中心航迹飞行下飞机噪声进行预测分析,并统计分散航迹相对于中心航迹的横向分散分布概率,以分散航迹的横向分散分布概率对中心航迹飞行下飞机噪声预测结果进行平移并依次叠加,以获取横向分散航迹飞行下飞机噪声的预测结果。在直线航迹分散、曲线航迹分散实例中,采用横向分散航迹飞行下飞机噪声的快速预测方法与AEDT中分散飞行航迹单独建模预测得到的飞机噪声等值线基本吻合,表明该快速预测方法可对横向分散航迹飞行下的飞机噪声进行有效预测,并提高了横向分散航迹飞行下的飞机噪声的计算效率。
In the airport terminal area,the variable lateral dispersion of flight tracks significantly impacts aircraft noise,so the lateral dispersion characteristics of flight tracks cannot be ignored when predicting aircraft noise.Predicting aircraft noise on laterally dispersed flight tracks using the Aviation Environmental Design Tool(AEDT) is complicated and time-consuming because the aircraft noise on each laterally dispersed flight track need to be separately modeled and calculated in AEDT.An AEDT-based fast prediction method for aircraft noise on laterally dispersed flight tracks is proposed to address this issue.Using AEDT as the starting point,the aircraft noise along the central flight track is calculated.The probability of the distribution of laterally dispersed flight tracks relative to the central flight track is then computed.The prediction result of aircraft noise on the central flight track is translated and superposed based on the distribution probability of laterally dispersed flight tracks to obtain the prediction result of aircraft noise on laterally dispersed flight tracks.Instead of separately calculating the aircraft noise on each laterally dispersed flight track,the aircraft noise on each laterally dispersed flight track is calculated by translating the aircraft noise on the central flight track.It expedites the calculation of the aircraft noise on laterally dispersed flight tracks.In the examples of straight track dispersion and curved track dispersion,the aircraft noise on laterally dispersed flight tracks predicted by this AEDT-based fast prediction method for aircraft noise on laterally dispersed flight tracks is comparable to the aircraft noise predicted by separately calculating each dispersed flight track in AEDT.This fast prediction method is shown to accurately predict aircraft noise on laterally dispersed flight tracks,and the computational efficiency of aircraft noise prediction on laterally dispersed flight tracks is enhanced.
作者
赵悦
张凯月
ZHAO Yue;ZHANG Kaiyue(College of Airport Engineering,Civil Aviation Flight University of China,Deyang 618000,Sichuan,China)
出处
《安全与环境学报》
CAS
CSCD
北大核心
2023年第12期4609-4616,共8页
Journal of Safety and Environment
基金
四川省自然科学基金项目(2022NSFSC1897)
中国民用航空飞行学院自然科学重点项目(ZHMH2022-002)。
关键词
环境工程学
飞机噪声
航迹分散
航迹聚类
航空环境设计工具(AEDT)
environmental engineering
aircraft noise
flight track dispersion
flight track clustering
Aviation Environmental Design Tool(AEDT)