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On basis of the principle electromagnetic induction, the connections about initial firing rate of projectile and turns, sectional area and electric current of the coil have been deduced, and then a kind of four stage reluctance electromagnetic launcher is designed. In order to exert pulse current on the coil properly, a photoelectric sensor is installed into coil track. Therefore, the projectile can...
When an electric current flows through a coil, a magnetic field concentrating on the space surrounding the coil is created. By controlling the change of discharge current, there would be a great difference in the electromagnetic force between two coils. Assuming that the directions of the currents flowing through two coils are uniform, the electromagnetic attractive force can be generated. Otherwise,...
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