倾斜轨道六面体卫星极端外热流解析模型  

Extreme External Heat Flux Analytical Model for Inclined-orbit Hexahedral Satellite

作　　者：宁献文[1] 张加迅[1] 江海[1] 赵欣[1] 

机构地区：[1]中国空间技术研究院,北京100094

出　　处：《宇航学报》2008年第3期754-759,共6页Journal of Astronautics

摘　　要：卫星设计中,外热流分析是温度场计算的基础,也是极端工况选择的依据。非太阳同步倾斜轨道卫星外热流变化非常复杂,一般需要采用组合散热面的设计方法,这些都使得卫星极端外热流工况难于判断,给整星热分析以及热设计造成很大困难。通过合理的分析与简化,推导出倾斜轨道六面体卫星空间外热流的解析模型,提出一种新的地球反照周期平均值的简化计算方法,利用Nevada软件对数学模型进行了验证。最后以某倾斜轨道卫星为例对其空间外热流进行了详细的分析研究,结果表明:轨道空间外热流模型与专业软件计算结果之间误差很小,应用这一模型可以方便地分析倾斜轨道六面体卫星外热流的变化规律,进而得出卫星极端吸收外热流工况,为卫星高低温工况确定提供相关的设计依据。In satellite design, external heat flux analysis was not only the base of temperature calculation, but also the base of extreme case option. Non sun-synchronous inclined-orbit satellite heat flux was so complex that the combined radiator surface design was needed. All these factors lead to the difficuhies for validating the extreme case and satellite thermal design. In order to avoid these problems, an external heat flux analytical model for inclined-orbit hexahedral satellite was established by means of physical analysis and logical simplification, and verified by Nevada. A critical inclined-orbit satellite was given as an example, and the result shows that the analytical model can well agree with that of Nevada. The application of this analytical model can make the extreme heat flux analysis become simple and convenient, and provide the design basis for the satellite hot case and cold case.

关 键 词：外热流 太阳辐照 地球反照 散热面 极端工况 模型 

分 类 号：V416[航空宇航科学与技术—航空宇航推进理论与工程]