永久磁石による渦電流ブレーキを用いたロケット上段部の回転減衰手法の検討

抄録

This paper proposes a detumbling method using eddy current brakes with permanent magnets for the second stage of the H-IIA rocket. This paper selects three candidate locations for generating the braking force and analyzes the effects of the eddy current depending on the location of the permanent magnet and the distance between the permanent magnet and the target surface with simulation and experiment. In the simulation, magnetic field analysis and dynamics simulation are combined to calculate the duration until complete detumbling. In the experiment, a small-sized mock-up of the target is used to verify the effect of the eddy current. The simulation and experimental analysis demonstrate the efficiency of the braking force depending on the locations.