Relaxation of the Current Concentration due to Velocity Skin Effect in Solid Armature Rail Gun

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  • 固体電機子レールガンの速度表皮効果による電流集中の緩和
  • コタイ デンキシ レールガン ノ ソクド ヒョウヒ コウカ ニヨル デンリュウ

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armature rail gunsystem, a current concentration on the rail/armature interface due to a velocity skin effec must be reduced to get the higher velocity. 2-D numerical caluculation shows that the shape of solid armature is important on reducing the current concentration, by which a characteristic length of the magnetic gradient on the rail/armature interface is extended.The optimum shape depends on values of the armature velocity and the permeability and resistivity of rail material.

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