超低轨道卫星热控分系统原子氧防护设计  

Design of Atomic Oxygen Protection for Thermal Control System of Ultra-low Orbit Satellites

作　　者：任红艳[1] 杨昌鹏[1] 赵欣[1] 许峰 李挺豪 REN Hongyan;YANG Changpeng;ZHAO Xin;XU Feng;LI Tinghao(National Key Laboratory of Spacecraft Thermal Control,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、航天器热控全国重点实验室,北京100094

出　　处：《航天器工程》2023年第6期18-24,共7页Spacecraft Engineering

摘　　要：为满足超低轨道卫星长寿命的使用要求,必须对星表经受累计大剂量原子氧通量的热控材料进行原子氧防护,或选择具有原子氧耐受的热控材料,以保证星上仪器设备在整个寿命周期中都能维持良好的工作环境。对国内外航天器上常用热控材料的原子氧影响研究结果进行了分析,对原子氧对各种材料的侵蚀机理及侵蚀速率进行了总结,并据此给出在轨道高度为268 km上的超低轨道卫星的热控设计建议,为国内超低轨道卫星的热控设计提供参考。In order to meet the requirements for long-term use of Ultra-low orbit(ULO)satellites,it is necessary to perform atomic oxygen protection for thermal control materials exposed to high cumulative doses of atomic oxygen or select thermal control materials that are resistant to atomic oxygento ensure that the onboard instruments and equipment can maintain a favorable working environment throughout its entire operational lifecycle.The research results on the influence of atomic oxygen on commonly used thermal control materials on domestic and foreign spacecraft are analyzed,and the erosion mechanism and rate of atomic oxygen on various materials are summarized.Based on this,suggestions for thermal control design of ULO satellites at an orbital altitude of 268km are given,providing reference for the thermal control design of domestic ULO satellites.

关 键 词：超低轨道卫星 原子氧防护 热控分系统 

分 类 号：V257[一般工业技术—材料科学与工程]