摘要
为研究现行起飞尾流安全间隔的合理性,采用数值计算模型计算尾流的产生及消散,并采用积分方法构建了后机遭受尾流的受力模型。以前机为A350-900,后机为B737-800为例,使用MATLAB软件进行建模仿真。由仿真结果得出,不同的天气状况下尾涡的消散速度不同,不同重量的后机所能承受的尾涡强度也是不同的。以后机为B737-800重量50 t为例,在一般消散情况下计算所得尾流间隔比现行尾流间隔缩减了46 s,表明现行的尾流安全间隔标准仍有很大的改进空间,为后期动态尾流间隔的研究提供了理论依据。
In order to study the rationality of the current safety spacing of the take-off wake,this paper uses the numerical calculation model to calculate the generation and decay of the wake vortex,and uses the integral method to propose the force model of the wake.The front airplane is the A350-900 and the rear airplane is the B737-800 as an example.The modeling and simulation are performed using MATLAB software.It is concluded from the simulation results that the wake vortex dissipates at different speeds under different weather conditions,and the wake vortex strengths that can be with stood by different weights are different.For example,the weight of the B737-800 is 50 t.In the case of general dissipation,the calculated wake separation is reduced by 46 s compared with the current wake spacing.Current wake safety spacing standard still has a large margin of improvement,which provides a theoretical basis for the study of the late dynamic wake separation.
作者
潘卫军
梁延安
梁海军
邓文祥
郑思睿
PAN Wei jun;LIANG Yan an;LIANG Hai jun;DENG Wen xiang;ZHENG Si rui(Civil Aviation Flight University of China,Guanghan 618307,China)
出处
《航空计算技术》
2019年第4期4-8,共5页
Aeronautical Computing Technique
基金
国家自然科学基金项目资助(U1733203)
中国民用航空总局安全能力建设项目资助(TM2018-9-1/3)
中国民航飞行学院大学生创新创业项目资助(S201910624109)
关键词
航空
尾流
数值计算
起飞间隔
安全性分析
aviation
wake vortex
numeral calculations
take-off separation
safety analysis
