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A feasibility study is presented on an application of four-pole superconducting linear synchronous motor (LSM) to a rocket launcher, whose acceleration guide tube of LSM armature windings is construct...ed as far as the depth of 1,500 m under the ground. The rocket is released from the linear launcher just after it gets to a peak speed of about 900 km/h, and flies out the guide tube to obtain the speed of 700 km/h at the height of 100 m above the ground. The linear launcher is brought to a stop at the ground surface by a quick control of deceleration. It has been found from the numerical simulation in attractive-mode that the four-pole superconducting LSM launcher system proposed here enables the armature current to decrease remarkably by 40% as compared with that of the system with two two-pole LSM's arranged separately.show more
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