The investigated magnetohydrodynamics liquid ring is applied to space missions about satellite attitude control in this article. The magnetohydrodynamics liquid ring physical equipment was tested, and the fluid velocity and current were measured. The experimental results display the liquid ring is workable with attitude adjustment task control. The experimental results offer data basis about the futural optimization design on magnetohydrodynamics liquid ring.
The magnetohydrodynamic momentum ring studied in this paper is used for satellite attitude adjustment. The purpose of this paper is to study the magnetic field distribution characteristics of magnetohydrodynamic momentum ring. In this paper, the coupling method is used for numerical simulation. The results show that the design of axial magnetic field distribution is more reasonable. The simulation results can be used to provide reference for the subsequent experimental research.
In this study, a novel mechanism using for the satellite three-axis attitude adjustment is proposed. The aim of this paper is to study the magnetic field of the spherical magnetohydrodynamic attitude controller. According to the results of numerical simulation, the optimal design parameter combination of the magnetic field design of the spherical magnetohydrodynamic attitude controller is obtained. This work can provide a reference for the subsequent flow field optimal design and experiment.
The fluid momentum ring based on magnetohydrodynamics (MHD) as an actuator for satellite attitude control has advantages in terms of reliability that are not found in conventional flywheel mechanisms. In the design study of the fluid momentum ring based on MHD, the paper presents an optimized design of the magnetic circuit of the fluid ring and a coupled FEM analysis of the multi-physics field of the electric-magnetic-fluid. The proposed design is able to reduce the influence of the induced magnetic field generated by the current on the intrinsic magnetic field and reduce the coupling effect between the electric and magnetic fields. Unlike the general motor structure, the magnetic field in the fluid cavity acts at a greater distance. Here the magnetic circuit is designed purposefully and optimized using particle swarm algorithm. Finally, the designed fluid momentum ring is simulated with FEM to analyze the coupled electric-magnetic-fluid multiphysical field.
In this paper, a novel mechanism is proposed for three-axis attitude adjustment of a satellite. The purpose of the simulation is to analyze flow field of the spherical MHD attitude controller on the flow field distribution, angular momentum, and output torque. According to the numerical results, a combination of pole and slot numbers is proposed for the physical design of MHD-SAC. This study can provide a reference for the optimal design of the attitude adjusting mechanism.
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