摘要
为满足高清晰、宽幅成像等任务的需求,高分辨率卫星需要带有尺度大、形面精度高的对地观测天线。本文基于控制体积法提出空间环境下热分析的理论,建立了桁架式薄膜结构的温度场分析模型,分析同步轨道下时变空间热流分布和温度场,探讨地球阴影和自阴影对结构温度场的影响。本文提出的分析方法提供了一种预测空间结构温度场的途径,并为结构热控制设计奠定了基础。
High resolution satellite systems are one area in which larger and more precise antennas are desired to increase the spatial resolution and widen the imaging range. A deployable truss support membrane structure on satellite is characterized and studied in this paper. Methodology of thermal analysis is formulated based on control volume method and thermal analysis model is developed. The space heat flux distribution and transient temperature field with time in geostationary orbit are predicted in the thermal analysis. The proposed method is useful for predicting temperature fields of large space structures and valuable for thermal control design.
出处
《测绘通报》
CSCD
北大核心
2014年第S1期9-14,共6页
Bulletin of Surveying and Mapping
关键词
空间热流
控制体积法
桁架式薄膜结构
thermal analysis
space heat flux
control volume method
deployable truss support membrane structure
