【摘要】 本文根据电磁学和流体力学的基本定律，结合磁流体推进器结构和运行特点，建立了一套比较完整的数学模型，它包括基本方程、稳态运方程、效率方程、标么速度和效率方程，从而为磁流体推进器的电磁场和流场的分布状况，流体的运动规律、稳态运行特性、磁流体转换效率和推进效率。通道损耗对推进性能影响的理论分析和计算奠定了基础。更多还原

【Abstract】 According to the features of MHD thrusters construction and operation, a mathematical model based on the basic laws of electromagnetic and fluid mechanics is developed in the paper. Introduced here are a whold set of basic equations for MHD thrusters, steady-state operation equations, efficiency cquation and per unit equations of velocity and efficiency. They provide the foundation for analyzing and calculating the distribution of electromagnetic and flow fields, the law of fluid particles, the characteristics of the thruster and the effect of the friction loss of the duct on the thruster performance, etc.更多还原