一种圆轨道航天器外热流通用计算方法  

Common Calculation Method for Orbital Heat Flux of Spacecraft on Circular Orbit

作　　者：易桦[1] 黄兴 江海[1] YI Hua;HUANG Xing;JIANG Hai(Beijing Key Laboratory of Space Thermal Control Technology, Beijing Institute of Spacecraft System Engineering, Beijing 100094, China)

机构地区：[1]北京空间飞行器总体设计部空间热控技术北京市重点实验室,北京100094

出　　处：《航天器工程》2021年第5期53-58,共6页Spacecraft Engineering

摘　　要：文章提出了一种圆轨道航天器外热流通用计算方法,采用解析法计算太阳直射热流,采用数值积分法求解行星红外和反照,无需求解行星中心到太阳矢量与航天器表面法线在局部球坐标系的经度差,能有效简化计算过程。在此基础上选取一种特殊圆轨道,对常用姿态(+Z对地,-Z对日,偏航)六面体卫星的瞬态外热流进行分析,并将偏航姿态瞬态外热流分析结果与热分析软件计算结果进行了对比,对比结果充分说明了此方法的准确性,它能快速准确地计算圆轨道航天器常用姿态外热流,可为各领域航天器热控设计和热分析提供重要参考。A common calculation method for orbital heat flux of circular orbit is proposed.In this method,the solar heat flux is calculated analytically,and the planet infrared and albedo heat flux is calculated by numerical integration,so that there is no need to solve the longitude difference in the local sphere coordinate system between the vector from planet center to sun and the normal vector of the spacecraft surface,which simplifies the process effectively.Moreover,the transient orbital heat flux of a special circular orbit is analyzed based on this method for satellite of cube shape in common attitude(+Z pointing nadir,-Z pointing sun,and yaw).The transient orbital heat flux results in yaw attitude based on the method are compared with the results solved by thermal analysis software,and the precision of the method is validated by the comparison.Orbital heat flux of circular orbit in common attitude can be calculated fast and precisely by this method,and this method can be used as an important basis for thermal design and thermal analysis of spacecraft in various fields.

关 键 词：圆轨道 外热流 数值积分法 

分 类 号：V416[航空宇航科学与技术—航空宇航推进理论与工程]