舌形张角型脉冲等离子体推力器极板结构参数影响仿真研究

Simulation Researches on the Pulsed Plasma Thruster with Tongue-Shaped and Flared Electrodes

摘要: 脉冲等离子体推力器是一种具有发展前景的电推进装置，具有比冲高、质量轻等优点，可用于微小卫星的姿态控制、轨道转移等任务。以ADD SIMP-LEX推力器为例，建立数学仿真模型，并对舌形张角型极板构型进行仿真，经过仿真和实验结果对比，探究了不同极板参数对推力器的主要性能参数（元冲量、效率、比冲等）的影响，研究结果表明：增大宽度比，元冲量和效率随之增大，比冲有所降低；增大张角，元冲量和效率也随之增大，比冲略有降低，但幅度不大。

Abstract: Pulsed plasma thruster (PPT) is a promising electric propulsion device with the advantage of high specific impulse and light quality. This paper studied a mathematical model of the pulsed plasma thruster with tongue-shaped and flared electrodes. The results of simulation are closer to the experiment. It also simulated the performance of the pulsed plasma thruster with different structures of electrodes. It is possible to conclude that different electrodes affect the performance of the pulsed plasma thruster.