提出水下发射航行体跨介质动态载荷预报方法，模拟了出筒过程中，多重密封环减振垫对航行体的约束和逐步由气到水的跨介质冲击作用，以及在出水过程中，航行体逐步由水到气的跨介质卸载作用。获得航行体轴向速度、俯仰角度、俯仰角速度和弯矩等关键参数随时间的变化规律，辨识出典型截面上的载荷特征，并与缩比模型试验数据进行了对比，仿真结果与试验结果吻合地较好。%Dynamic load prediction method of trans-media underwater launching vehicle is proposed. In the process of moving from the launching tube, the effect of multiple constraints by vibration-damping pad and trans-media shock from hydrodynamic load are simulated. The effect of gradually trans-media unloading on the vehicle during the process of its moving to the surface of water is considered. The variation trends about key parameters such as axial velocity, yaw angles, yaw angles’ velocity and inner moment are obtained varying with time. The characteristic of moment load on typical section of the vehicle is figured out. The simulation results are validated by reduced-scale model test, and the simulating data and test data achieve a good agreement.
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