一种GEO卫星平台电推进轨道转移技术

Electric Propulsion Orbit Transfer Technology of GEO Satellite Platform

为解决传统化学推进方式比冲小、燃料携带量大等问题,将化学推进平台改为全电推进平台。全电推进可节省卫星燃料,增加卫星载重比,延长卫星使用寿命,并且支持"一箭双星"发射。通过调研国内外全电推进卫星平台的进展情况,设计出使用电推进的轨道转移方案,并与传统推进方式进行对比。分析结果表明:卫星发射质量为2 700 kg,使用2台300 mN的推力器并联工作,从地球同步转移轨道(GTO)至地球同步静止轨道(GEO)的转移时间约为6个月,消耗燃料约650 kg,可满足任务需求。

In order to solve problems that the traditional chemical propulsion is with low specific pulse and requires a large amount of fuels, the chemical propulsion platform is replaced with an integrated electric propulsion platform, which can save the satellite fuel, increase the satellite loading ratio, extend the satellite lifespan, and support the launching mode of “dual satellites in one launch”. Firstly, this paper studies the progress of the integrated electric propulsion satellite platform at home and abroad. Then the scheme of orbit transfer using electric propulsion is designed and compared with the traditional propulsion method. The launch mass of the satellite is 2 700 kg, and two 300 mN thrusters are used in parallel. It takes about 6 months for the satellite to transfer from geostationary transfer orbit （GTO） to geostationary earth orbit （GEO）, only with the fuel consumption of 650 kg. The mission requirements are satisfied.