水下发射航行体跨介质动态载荷预报研究  

Study on Dynamic Load Prediction of Trans-media Underwater Launching Vehicle

作　　者：魏洪亮[1] 陆宏志[1] 赵静[1] 惠俊鹏[1] 方心虎 

机构地区：[1]中国运载火箭技术研究院研究发展中心,北京100076

出　　处：《导弹与航天运载技术》2016年第2期77-80,共4页Missiles and Space Vehicles

基　　金：国家国际科技合作专项资助(2015DFA70840)

摘　　要：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.

关 键 词：水下发射 弹性体 跨介质 动态载荷 

分 类 号：V412[航空宇航科学与技术—航空宇航推进理论与工程]