基于微波等离子推力器的地球同步轨道卫星任务优化计算

Mission Numerical Optimization for Geosynchronous Satellite Using Microwave Plasma Thruster

将微波等离子推力器 (MPT)应用于“东方红三号”(DFH 3)卫星的推进子系统 ,完成其轨道转移和南 北位置保持任务。建立了卫星任务和系统优化计算模型 ,采用遗传算法对卫星轨道转移和位置保持任务进行优化模拟计算。讨论了推力弧段和推力等对卫星变轨时间、MPT累积工作时间、卫星干质量和有效载荷的影响。结果表明 ,采用MPT可大大减少推进剂工质消耗 ,增加有效载荷 ;变轨时间明显大于化学推进 ,但小于相同电功率的其他电推进。

Microwave plasma thruster (MPT) was applied to the sub system of DFH 3 satellite to complete its orbit transfer (OT) and north south station keeping (NSSK). The optimization of mission and system was modeling and genetic algorithm was used for optimizing simulated computation of its OT and NSSK. The effect of thruster arc and force during the OT time, to accumulated working time of MPT, net weight of satellite and efficiency loading was discussed in this paper. The results showed that propellant consumption was decreased and efficiency load was increased by using MPT, and the OT time of MPT was much longer than chemical propellant but shorter than other kind of electrical thruster with same power.