Abstract
Helical coil electromagnetic launchers (HEMLs) using rail-fed strategy, local excitation and single-turn commutation, solve the problem of synchronization control perfectly. Through the simulation, a novel helical coil launcher is designed using the basic HEML's structure. A D-shaped cross section armature is proposed to achieve the maximum projectile velocity. The energizing length of the driving coil, as well as, the armature position of the maximum force is determined. The maximum driving force on the armature increases with the increasing coil axial length and the armature acceleration reaches its maximum value when the ratio of axial to radial length of the coil is 1:2. The force distribution of the armature and driving coils is analyzed.
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