摘要
针对敏捷型遥感卫星相机变化的外热流,以及热防护门(简称热门)对相机热设计产生的影响,建立带热门的相机热模型,采用Thermal Desktop软件对带热门相机在轨飞行期间的温度变化进行仿真。仿真结果表明,使用热门将大幅降低相机的主动加热功率。对热门开启后相机的最长成像时间进行分析,热门开启后6min,相机次镜支撑组件无法满足相机热设计要求,可在次镜安装板背部包覆多层隔热材料解决这一问题。文章的研究结果,对遥感卫星热门与热控系统的耦合设计具有一定的参考价值。
The heat flux change of agile remote sensing satellite camera and the effect of thermal door on the camera thermal design are studied. A model of camera with thermal door is built and simulated by using Thermal Desktop. The result indicates that using thermal door can decrease satellite heating power. The further analysis indicates that the supporting mechanism of second mirror is the main component which determines the imaging time no longer than 6 minutes. Using MLI （multi-layer insulating material） on the supporting mechanism can solve the problem. The research in this paper is useful to the coupling thermal design of remote sensing satellite payload.
出处
《航天器工程》
2013年第2期55-59,共5页
Spacecraft Engineering
基金
国家重大航天工程
关键词
卫星相机
热防护门
姿态机动
外热流
热稳定性
satellite camera
thermal door
attitude maneuver
heat flux
thermal stability
