JPS6443055A - Electromagnetic accelerator - Google Patents

Abstract

PURPOSE:To make it possible to use continuously without replacing any rail electrode by providing a multistep type of step grooves to the rail electrodes and using armatures corresponding to a groove of each step. CONSTITUTION:The grooves 8(a), 8(b) and 8(c) with a width of size A, B and C are respectively provided to the rail electrodes 1(a) and 1(b), and the armatures 3(a)-3(c) with the widths corresponding to the sizes A-C respectively are mounted to the accelerated bodies 2. Further, the rail electrodes 1(a) and 1(b) are supported by the insulating materials 6(a)-7(b) so as to form a trajectory 5. According to the constitution, first of all, the accelerated body 2 equipped with the armature 3(a) is operated. In this case, the groove 8(a) is injured by making a plasma of the armature 3(a), but its scope is mostly concentrated on the contact position. Accordingly, there is no problem with an operation of the accelerated body 2 using the armature 3(b) corresponding to the groove 8(b). Similarly, an operating of the accelerated body using the groove 8(c) and the armature 3(c) is also possible.