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In order to evaluate and understand the launch performance and various aspects of the segmented enhanced four-rail electromagnetic launcher, its internal electromagnetic characteristics, current distribution and electromagnetic force were studied. On the basis of constructing a physical model, the calculation formulas for the magnetic induction intensity and electromagnetic force at any point in its internal space are proposed. Through the method of finite element analysis, the magnetic induction intensity and current distribution on the armature and main and auxiliary rails of the segmented enhanced four-rail electromagnetic transmitter were simulated, as well as the magnitude of the electromagnetic force experienced by the armature. The results show that on the segmented enhanced four-rail electromagnetic transmitter, the armature mainly experiences current concentration at the pivot-rail contact position, which may cause various problems. This situation can be further studied in the future.
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Shu et al. (2024) studied this question.
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