The invention provides a satellite electric propulsion system which comprises four electric thrusters, each electric thruster is installed on a satellite back floor through a double-axis vector adjusting mechanism, the thrust direction of each electric thruster points to the mass center of a satellite, the two sides of the satellite back floor are each provided with two electric thrusters, and the electric thrusters are symmetrically installed relative to the center line of the satellite back floor; the two electric thrusters on the same side are symmetrically installed relative to the other center line of the satellite back floor plate. The satellite back floor is rectangular. The angular momentum unloading method is used for the satellite electric propulsion system and comprises the steps of initializing the biaxial vector adjusting mechanism and unloading the angular momentum. According to the scheme, angular momentum unloading of the momentum wheel can be completed while the electric propulsion execution position is kept, the use efficiency of a propellant is improved, and the in-orbit angular momentum unloading requirement of a GEO satellite can be met. The electric thruster is suitable for the geosynchronous orbit satellite adopting the electric thruster for angular momentum unloading.
本发明提供一种卫星电推进系统,包括:电推力器,数量为四台,每台所述电推力器通过双轴矢量调整机构安装于卫星背地板,其推力方向指向卫星的质心,其中:卫星背地板两侧各设置两台所述电推力器,相对卫星背地板的一条中线对称安装;同侧的两台所述电推力器相对卫星背地板另一条中线对称安装;所述卫星背地板为矩形。角动量卸载方法,用于上述卫星电推进系统,包括:初始化双轴矢量调整机构,角动量卸载。本方案能够在电推进执行位置保持的同时完成动量轮的角动量卸载,并提高推进剂的使用效率,可满足GEO卫星的在轨角动量卸载需求。本专利适用于采用电推力器进行角动量卸载的地球同步轨道卫星。
Satellite electric propulsion system and angular momentum unloading method
一种卫星电推进系统及角动量卸载方法
2023-01-06
Patent
Elektronische Ressource
Chinesisch
IPC: | B64G Raumfahrt , COSMONAUTICS |
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