UUV入水初始段运动姿态研究  

Study on the motion attitude of initial stage of UUV water entry

作　　者：张岳青[1] 蔡卫军[1] 李建辰[1] 王志杰[1] 

机构地区：[1]中国船舶重工集团公司第七〇五研究所,西安710077

出　　处：《水动力学研究与进展（A辑）》2017年第4期417-422,共6页Chinese Journal of Hydrodynamics

摘　　要：为了克服UUV能源受限而导致航程短或者完成任务时间长等弊端,高空滑翔UUV和飞机空投UUV是一种新的研究方向。该文针对UUV复杂的入水过程,采用FEM/SPH耦合方法,对UUV入水过程进行了仿真,研究了UUV入水过程中的冲击加速度和入水初始段UUV姿态的变化。仿真分析发现UUV入水时头部会产生低压力,造成UUV入水时呈现"低头"趋势,对入水运动姿态有重要影响。结合试验数据,在仿真模型中模拟了UUV入水时的低压作用,并分析了不同工况下低压力的变化趋势,仿真得到了UUV入水初始段的真实运动姿态。研究结果可为UUV入水初始段的弹道设计和结构承载能力设计提供依据。To overcome the short voyage because of energy limitation and the long time to finish the task, the altitude glider UUV and the plane dropping UUV are the new research direction. For the complex process of UUV water entry, the process of UUV water entry is simulated by FEM/SPH coupling method to study the changes of the impact acceleration and the motion attitude of UUV. The simulation results show that a low pressure is produced under the head of UUV. The low pressure causes the motion of UUV in a ＂head down＂ trend and has an important effect on the motion attitude when UUV water entry. Combined with the experimental data, the effect of low pressure is simulation in the model and the changes of low pressure is analyzed in different conditions. The true motion attitude of initial stage of UUV is obtained by simulation finally. The simulation results provide an analysis for water entry trajectory design and structure load bearing design of UUV.

关 键 词：FEM/SPH耦合方法 无人水下航行器 入水 忽扑 

分 类 号：TJ630[兵器科学与技术—武器系统与运用工程]