A Multi-barrel Rocket Launchers Virtual Prototyping Simulation And Optimization

As a complex weapon system, the structural and system parameters of a multiple launch rocket system have considerable influence on the firing accuracy. In the dissertation, a rigid-flexible coupling dynamics model is built based on the multi-body system dynamics and virtual prototyping technology, which helps research the several factors that affect the initial disturbance of the rockets.The main work of the paper is as follows:1)a simplified model is built as the virtual prototyping model. To keep the dynamic characteristics of the launching system, flexible effects of the director is considered, and a rigid-flexible coupling contact model is used to simulate the impact between the rocket and the director. The vehicle and the ground is connected by UA tire,and a contact joint is used to simulate the connection between the hydraulic jack and the ground.2)based on the VP model, launching dynamics simulation is performed, and motion of the rockets, the directors and force condition of the system is studied.3)aimed at minimizing the initial disturbance of the rockets, the clearance between rocket and director, locking force and firing interval are studied, and several reasonable results are obtained, which can offer some guidance for the design of MLRS.4)according to the traditional firing sequence, several new firing sequences are established,and using the least mean square deviation of initial disturbance as the target to evaluate the firing sequences, one firing sequences is confirmed as the preferable firing sequences.