20~85km高空大气密度与风场研究

摘要

20~85 km大气密度与风场对再入飞行器的安全及返回(即飞行器可控可达)有非常重要影响.分析了高空大气参数变化影响因素,基于CIRA-86大气模型与美国航天飞机飞行实测数据,分析了大气密度偏差范围;基于国外实测文献数据及等概率分布椭圆模型,给出了风矢量剖面,研究了风矢量剖面在飞行器设计中的应用.%The atmospheric density and wind field from 20 km to 85 km are of importance for the reentry flight and accurate return, in other words the controllability and accessibility of the vehicle. In this article, influence factors of the atmospheric parameters at high altitude are analyzed. Based on the CIRA-86 atmospheric model and NASA space shuttle flight data, the atmospheric density range is analyzed. Based on literature data and the probability ellipse model, the vector wind profile is given and its application in vehicle design is studied.