Analysis and optimization of ballistic characteristics of mine eliminating bombs in cross flow environment
Difficulty in achieving the accuracy of depth determination for mine extinguishing devices in high cross flow environments,a numerical calculation model for mine extinguishing bombs(MEB)was constructed based on their physical parameters and ocean environment.The finite element method was used to simulate the process of bomb dropping,and the effects of initial velocity and cross current conditions on the trajectory of mine extinguishing devices were analyzed.Further take the center of gravity position and tail diameter of the mine extinguishing bomb as design parameters,and the impact point position error as the objective function.Combine PSO algorithm to perform joint simulation optimization on the motion of mine extinguishing bombs under high cross flow velocity conditions.The calculation results show that Due to the high resistance of seawater,the initial velocity of minesweepers has little impact on the trajectory,while the cross flow velocity has a greater impact on the trajectory.After optimization,the mine extinguishing bomb maintains a tilted attitude when falling,and the deviation of the impact point position is reduced by about 94%.The established multi-objective optimization model provides a basis for precise missile delivery design.
mine extinguishing bombsballisticaccuracy in bombingoptimal designparticle swarm optimization
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