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Modified Electromechanical Modeling and Parameters Analysis of Magnetoplasmadynamic Thruster

Author

Listed:
  • Yu Zhang

    (College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China)

  • Jianjun Wu

    (College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China)

  • Yang Ou

    (College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China)

  • Jian Li

    (College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China)

  • Sheng Tan

    (College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China)

Abstract

To predict the thrust of magnetoplasmadynamic thrusters (MPDTs), a modified electromechanical model was proposed and a comparison with experimental results is presented in this paper. The motion of propellant in the thruster was divided into two portions: the axial motion which was accelerated by the interaction of current and induced self-field, and the swirling motion which was accelerated by the interaction of current and applied magnetic field. The electromechanical model was in good agreement with the experimental data, and the fitting degrees of the model were greater than 0.93. Furthermore, the influence of parameters on the performance of MPDT were investigated by utilizing the electromechanical model. The results indicate that the thrust performance of the thruster improved with the increase of discharge current, anode radius, applied magnetic field strength, and the decrease of mass flow rate. However, the large anode radius and low mass flow rate readily led to the failure of thruster function. Therefore, the model can not only predict the thrust performance of MPDTs, but also guide the design and operation optimization of the thruster.

Suggested Citation

  • Yu Zhang & Jianjun Wu & Yang Ou & Jian Li & Sheng Tan, 2019. "Modified Electromechanical Modeling and Parameters Analysis of Magnetoplasmadynamic Thruster," Energies, MDPI, vol. 12(12), pages 1-16, June.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:12:p:2428-:d:242511
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