| A new automatic launcher system was studied in this paper. It built a multi-body dynamics model including the automatic assemblage, feed mechanism, gear drive mechanism, driving linkage mechanism, coordination linked mechanism, shock absorber, etc. based on the existing three-dimensional model. By analyzing the launcher’s overall conception and the structures of each assemblage, grasped the various actions throughout the firing cycle process. The reliability of the automatic actions was validated by the kinematics and dynamics analysis of the automatic assemblage.In addition, for the curved & direct fire trajectory, point & area denial effect and the double-acting shock absorber of the barrel of this launcher, different virtual-prototyping models had been created including fire two kinds of cartridges APP(armor piercing projectile) & CS(common shell) and with or without advancing primer ignition. By analyzing the moving characteristics verified the compatible of the automat. The influence of parameters on law of motion of this automat was concluded by changing design parametric value (the stiffness and preload of return spring, the stiffness and preload of barrel buffer spring as well as the mass of barrel and automat). The forces of certain parts obtained in the simulation analysis. After FEA(finite element analysis), replaced the lightweight materials and used topology optimization methods to achieve the purpose of weight loss of the whole launcher. Finally, compared test results with simulation results to prove the reliability of simulation, which can provide a reference for improvement of the launcher system.
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