多级活塞缸式发射装置结构安全性分析

Analysis on Structure Safety of Multi-stage Piston Cylinder Launching Equipment

多级活塞缸式发射装置作为新型冷发射方式之一,具有兼容不同弹径、免装填等优点。为研究多级活塞缸式发射装置的结构安全性,通过理论分析、数值仿真等方法对多级活塞缸式发射装置的运动过程进行了梳理,分析了多级活塞缸式发射装置中缓冲材料的吸能需求,并揭示了结构质量特性偏差、装配姿态偏差、燃气动力偏差、缓冲材料特性偏差等因素对导弹离台姿态的影响规律。多级活塞缸式发射装置的运动规律由各级缸筒的几何参数和被推动导弹的质量参数决定,对缓冲吸能的需求较高,多模块的多级活塞缸式发射装置中导弹的离台姿态更加稳定。研究结果可为多级活塞缸式发射装置安全性设计提供理论支撑,为多级活塞缸式发射武器系统提供指标分解依据。

As one of the new cold launching methods,the multi-stage piston cylinder launching equipment has the advantages of compatibility with different sizes of missile and loading free.In order to analyze structure safety of multi-stage piston cylinder launching equipment,the kinematic mechanism of the multi-stage piston cylinder launching equipment was studied by theoretical analysis and numerical simulation method,and the critical demands in energy absorbing of multi-stage piston cylinders were established.Influences of mass properties deviation,assembly posture deviation,gas power deviation,and cushioning material deviation on the attitude of missile were studied.The kinematic mechanism of the multi-stage piston cylinder launching equipment is determined by the geometry of the cylinder and the mass properties of the propelled missile.There is a high demand of energy absorbing in multi-stage piston cylinders.The off-platform attitude of missile is more stable in multi-module multi-stage piston cylinder launching equipment.The results can provide theoretical support for safety design of multi-stage piston cylinder launching equipment structure and weapon system index decomposition.