Magnetic Field Optimization And Influence Of Small Hall Thruster

With the continuous development of society,people's exploration of outer space has been deepened,and the high-performance,long-life electric propulsion technology has also been paid more and more attention by scientists in various countries.The electric propulsion technology is to use the electric propulsion system to provide thrust for the spacecraft.The steady-state plasma thruster is also known as Hall thruster by scholars,which is the most typical electric propulsion device.Hall thruster has the characteristics of high specific impulse,long life and high payload rate.It is a kind of electric propulsion device with mature technology and wide application at present.It has been widely used in aerospace field to carry out Aerospace missions such as spacecraft attitude control and orbit control.In order to further improve the performance of Hall thruster,it is necessary to develop Hall thruster Carry out detailed and in-depth research.In this paper,from the perspective of magnetic shielding,the optimal distribution of magnetic field configuration is obtained,and the transport characteristics of particles in the discharge channel are simulated by the MHD equation.With the continuous development of society,people's exploration of outer space has been deepened,and the high-performance,long-life electric propulsion technology has also been paid more and more attention by scientists in various countries.The electric propulsion technology is to use the electric propulsion system to provide thrust for the spacecraft.The steady-state plasma thruster is also known as Hall thruster by scholars,which is the most typical electric propulsion device.Hall thruster has the characteristics of high specific impulse,long life and high payload rate.It is a kind of electric propulsion device with mature technology and wide application at present.It has been widely used in aerospace field to carry out Aerospace missions such as spacecraft attitude control and orbit control.In order to further improve the performance of Hall thruster,it is necessary to develop Hall thruster Carry out detailed and in-depth research.In this paper,from the perspective of magnetic shielding,the optimal distribution of magnetic field configuration is obtained,and the transport characteristics of particles in the discharge channel are simulated by the MHD equation.After the ideal magnetic field configuration of Hall thruster is calculated,the particle transport characteristics in the channel of Hall thruster are numerically simulated by one-dimensional fluid model,and the transport characteristics of particles in the discharge channel are simulated by the fourth-order Runge Kutta method.The distribution of electron temperature,ion velocity and other parameters in the discharge channel are obtained,and the discharge current,thrust and other physical parameters in the thruster channel are calculated.