无电极洛伦兹力推力器的电路模型  

Circuit Model of Electrodeless Lorentz Thruster

作　　者：石峰 史鑫 SHI Feng;SHI Xin(School of Physics and Electronic Information Engineering,Henan Polytechnic University,Jiaozuo 454000,China)

机构地区：[1]河南理工大学物理与电子信息学院,焦作454000

出　　处：《真空科学与技术学报》2023年第5期438-443,共6页Chinese Journal of Vacuum Science and Technology

基　　金：河南理工大学博士基金项目(B2017-56);国家自然科学基金项目(52102167)。

摘　　要：无电极洛伦兹力推力器(ELF)具有比冲高、无电极腐蚀、推力大、可选工质多等优点,可考虑与其他推力器共同组合成复合推力器,可作为新型大功率推力器的发展方向。本文针对该推力器提出了一种电路模型,其中旋转磁场线圈被等效为相位相差90°的集总参数电感,将等离子体等效为具有电容性和电阻性元件的电感负载。基于基尔霍夫定律和电流连续性方程,推导出了推力器的推力产生公式。结果表明,对于高输入能量,效率与输入能量成反比,比冲和效率都随着耦合的增加而提高,并且随着输入能量的增加,存在一个最佳效率。Electrodeless Lorentz Thruster(ELF)has the characteristics of high specific impulse,electrodeless corrosion sputtering,large thrust,and a wide selection range of working substances.It can also be considered to combine with other thrusters to form a composite thruster and can be the development direction of the new highpower thruster.This paper presents a circuit model for the thruster.The rotating magnetic field coil is equivalent to a lumped parameter inductance with a phase difference of 90°.The plasma is modeled as an inductive load with capacitive and resistive elements.Based on Kirchhoff's law and the current continuity equation,a series of equations are derived.The plasma is accelerated under the action of Lorentz force.The results show that for high input energy,the efficiency is inversely proportional to the input energy,the specific impulse and efficiency increase with the increase of coupling,and there is an optimal efficiency with the increase of input energy.

关 键 词：无电极推力器 洛伦兹力 旋转磁场(RMF) 电推进(EP) 电路模型 

分 类 号：V439.4[航空宇航科学与技术—航空宇航推进理论与工程]