【作者】 张成红；

【导师】 安伟光；

【作者基本信息】 哈尔滨工程大学 ， 飞行器设计， 2007， 硕士

【摘要】 本论文的选题来源于导师申请的黑龙江省科技攻关项目“水下超空泡技术试验系统及超高速机理研究”的一部分。高速运动体入水和运动体参数的优化设计是一个非常复杂的问题，无论是理论研究还是工程应用都涉及到了其它许多学科，例如物理学，流体力学，材料力学等，运动体入水弹道及入水载荷的精确分析，水下高速运动体的减阻机理和超空泡研究，以及运动体参数的优化设计等等，这些对研究高速运动体入水和运动参数的优化设计都有十分重要的意义。第一章，以俄罗斯在上个世纪90年代开发的“暴风”鱼雷为引子，展开本章要研究的内容。简单介绍了该鱼雷的工作原理和超空泡形成机理。入水研究的背景、历史及各国取得的研究成果。第二章，定义了要运用到的变量和介绍要运用到的相关定理。推导运动体入水的空间方程组，包括动力学方程组、运动学方程组和特殊情况下的运动体垂直入水的方程组。第三章，以运动体入水过程中出现的“运动体、气、水”的相互作用的现象为引子，展开本章要研究的内容。撞水阶段的载荷分析。具体分析轴对称垂直入水计算和倾斜姿态入水冲击的两种情况，并运用MATLAB给出算例分析。第四章，第一部分里粗略的介绍运动体入水的稳定性，并提供了运动体入水过程中的稳定性方面的图片。第二部分里，由反潜飞机空投鱼雷命中目标引申出运动体落水点精度评定分析，提出精度评定的一种理论方法。第五章，假定已知运动体的某些参数，推导运动体的最佳长细比、最佳空化数、最佳空化器半径和最佳运动距离的公式。更多还原

【Abstract】 The subject of this paper comes from science and technology department of Heilongjiang province supporting project—"underwater high-speed mobile foundation theory and correlative technique research", and this paper is one of important part of the research. It is an extremely complex question of the high-speed mobile entering water and the parameter of the mobile optimized design. Regardless of the fundamental research or the project application all involves other many disciplines, such as, physics, hydrodynamics, material mechanics, and so on. It is precisely computed that the mobile enters water trajectory and enters water load. It is very important of the underwater high speed mobile of reducing resistance of mechanism and supercavitation research and the parameter of the mobile optimized design, and so on. These are extremely vital significance to study the high speed mobile entering water and the parameter of the mobile optimized design.The first chapter, in last century 90’s, take Russia developing "the storm" torpedo as opening words, and start studying this chapter content . Simply introduce this torpedo principle of work and the supercavitation shaping mechanism. Lastly, introduce the background of entering water research background, the research of history and the other countries obtaining achievement.The second chapter, it is defined that we will use the variable and it is introduced that we will use the related theorem. Then infer the spatial system of equations of the mobile entering water, including dynamics system of equations, the kinematics system of equations and in the peculiar circumstance, equations of the mobile vertical entering water. The third chapter, when the mobile enters water process, it will appear "the mobile, the gas, the water" the mutual function phenomenon. Take it as opening words, and start studying this chapter content. It is the load analysis of hitting the water stage. Lastly, we concrete analyze the computation axial symmetry mobile entering water and the inclined posture entering water impact, and has given the concrete example analysis by MATLAB.The fourth chapter, in the first part, sketchily introduce the stability of the mobile entering water, and provide the stable aspect picture of the mobile entering water process. In the second part, by the antisubmarine aircraft airdrop torpedo to hit goal, and expands the mobile to fall in the water the precision evaluation analysis, and proposes one theory method of the precision evaluation.The fifth chapter, hypothesis the mobile some parameters being known, infer the formula of the best cavity length, the best cavitations number, the best cavitator radius and the best moving distance.更多还原