Station-keeping and Angular-momentum-unloading of GEO Satellite Using Electric Propulsion with Manipulator
The geosynchronous orbit(GEO)is an important strategic resource.The all-electric propulsion(EP)GEO satellite has the characteristics of high-load-carrying-capacity and long-life,which has become a trend.GEO satellite needs regular station-keeping(SK)and angular-momentum-unloading.The current all-EP GEO satellite equipped with multi-vector EPs has the disadvantages of difficulty in layout for EPs,low angular-momentum-unloading capacity,high fuel consumption and large demand for the number of EPs.To solve the above problems,the control approach of GEO satellite using only one EP with manipulator is proposed.The SK with low fuel consumption can be achieved by adjusting the EP's position and direction,and the large amplitude angular-momentum-unloading can be achieved by using the thrust of SK.Compared to current all-EP GEO satellites,this approach can effectively solve the problem of difficult layout for EP,improve the angular-momentum-unloading capacity from 5 N·m·s to 40 N·m·s,save at least 13.5％of fuel and reduce the number of vector EPs from at least 2 to 1.
NETL
NSTL
万方数据
