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LEO轨道卫星原子氧环境SPENVIS软件仿真
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Abstract:
原子氧(AO)是影响低地球轨道(LEO)卫星在轨性能的重要空间环境因素之一，其氧化性会对卫星表面材料及舱外组件造成损伤，严重影响卫星在轨寿命，有必要对LEO轨道上的AO环境进行比较，做好AO防护工作。本文使用SPENVIS仿真软件，计算并分析了LEO轨道卫星的AO环境，考虑了轨道高度、轨道倾角、太阳活动指数与地磁活动指数等因素的影响。本仿真计算结果可以用于低轨卫星AO防护设计，为后续卫星设计选材时提供数据参考。
Atomic oxygen (AO) is one of the important space environmental factors that affects the on-orbit performance of satellites in the Low Earth Orbit (LEO). The oxidation caused by AO can damage the surface materials and components of satellites, hence significantly reduce the on-orbit life-time of the satellites. It is necessary to compare the environment of AO in LEOs and do well in AO protection. In this paper, we use the SPENVIS software to calculate and analyze the AO environment in LEOs. The effects of orbital altitude, orbital inclination, solar activity intensity, and earth’s magnetic field intensity are considered. These results offer useful references for the selection of materials used in satellite design and can be used to create an efficient AO protection for LEO spacecrafts.
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