Analysis of the Influence of the Number of Coil Pairs Per Wing on Multiwing Reconnection Electromagnetic Launcher

The multiwing reconnection electromagnetic launcher is a variant of the plate reconnection device, and its working principle is the same as the reconnection device. The multiwing reconnection electromagnetic launcher is a geometrically complementary symmetrical mechanism, which can effectively improve the stability of the projectile. First, this article introduces the basic principle of one-stage plate reconnection electromagnetic launcher, and then focuses on the influence of the number of drive coil pairs per wing of the four-wing reconnection electromagnetic launcher on the launch performance. A four-wing reconnection electromagnetic launch model was established, the driving coil pairs of each wing are 1, 2, and 3, respectively, and the overall inductance of the coils of each wing consistent in three cases is ensured through the
LC
oscillation simulation. From the results of electromagnetic finite element method simulation, it is indicated that when the number of coil pairs per wing is 1, the projectile’s exit velocity is 474 m/s and the efficiency is 15.10%. This article shows that the most efficient acceleration of the projectile uses one driving coil pair per wing. More coil pairs per wing result in lower exit velocities and efficiencies. Finally, the phenomenon is explained from the perspective of the interaction between the magnetic field and the eddy current.