Study on motion analysis and simulation of illuminating projectile airborne ejection process

In order to understand the motion law and dynamic characteristics of illuminating projectile during airborne ejection, the structure optimization and system design of illuminating projectile are realized. ANSYS/LS-DYNA software was used to simulate the airborne ejection process of illuminating projectile, and the structure and motion of each part of the illuminating projectile are analyzed, and the action mechanism of the illuminating projectile and the motion characteristics between the projectile bottom, the umbrella torch system and the projectile body are obtained. The simulation results show that the strength of the projectile body and umbrella torch system can meet the operational requirements. There will be a collision between the projectile bottom and the umbrella torch systemin the process of airborne ejection. After the collision, the velocity of the two will have a step change in the opposite direction. The time interval of collision is increasing, and the number of collision is determined by the ejection velocity of the projectile bottom and the umbrella torch system. The projectile velocity of the projectile bottom and umbrella torch system, the projectile body in the stable state is 9.95m/s and 14.62m/s, respectively, which are 19.38% and 7.88%lower than the theoretical calculated values, respectively. The simulation results can be used as reference for the mechanical design and structural optimization of illuminating projectile.