The magnetohydrodynamic momentum ring for satellite attitude adjustment is studied in this paper. The aim of this paper is to research the fluid field characteristic distribution in the magnetohydrodynamic momentum ring. The numerical calculation results indicate that liquid metal can produce effective rotational flow under the action of electromagnetic field. The numerical results show that the fluid ring design is effective and achieves the design expectation, and it can provide reference for the future experimental tests.
In this text, the proposed liquid momentum ring is aimed at the space mission of attitude control of satellite. The characteristic distribution of magnetic field about researched magnetohydrodynamic liquid ring is numerically simulated. The numerical calculation indicates that the magnetic field distribution design about liquid ring is appropriate, and electromagnetic force generated makes the liquid metal to rotate. The calculation results offer a data support basis to the following liquid ring optimization design and a numerical reference for following torque test experiment.
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.
In this paper, a novel method is mentioned using a spherical magnetohydrodynamic attitude adjusting mechanism for threeaxis attitude adjustment of satellite. The time variation of the flow velocity, angular momentum and output torque is studied in the proposed mechanism. The numerical results could be used for optimizing attitude mechanism design, and provide guidance for following experimental research.
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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