【作者】 彭正梁；

【导师】 王宝寿；

【作者基本信息】 中国舰船研究院 ， 兵器发射理论与技术， 2011， 硕士

【摘要】 本文针对潜射导弹的无动力运载器水下发射方式,建立了导弹二维水弹道的数学仿真方法,能够计算包括运载器水中弹道和弹器水面分离弹道在内的整个水下弹道过程。文中首先回顾了国内外在弹器水面分离技术及动平台水下发射问题上的研究进展,选择基于较成熟的半经验半理论计算分析方法,推导出导弹与运载器的刚体运动方程组。依据弹器分离运动的特点,建立较全面的水下发射导弹弹器分离问题数学模型,给出了适配器约束内力、内力矩、分离燃气发生器推力及波浪扰动力的计算方法。在此基础上,编写了无动力运载器水下发射及弹器水面分离的弹道仿真程序。通过仿真结果与水池模型试验结果的对比,验证了仿真程序的正确性。随后,针对弹道计算模型未能计及尾空泡影响的不足,本文提出基于CFD方法计算流体力。通过Fluent软件二次开发和中间数据文件的应用,建立起了Fluent软件与数学仿真程序并行迭代运算规则,实现了对于弹器分离问题的Fluent软件与仿真程序联合求解。新建立的联合求解方法成功模拟了运载器尾部燃气泡影响下的运载器运动规律。最后,基于已建立的弹道仿真方法对不同分离高度、分离燃气发生器增面比和适配器配合间隙等变参数条件下的分离过程进行了大量仿真,总结出分离结果随参数的变化规律,可为各项分离参数的确定提供依据。更多还原

【Abstract】 A two-dimensional hydroballistic numerical simulation method was established for such underwater launched missiles as those carried by non-powered capsule in the present paper. The method could calculate the whole underwater trajectory, including underwater trajectory of capsule and the separation trajectory of capsule and missile near the free surface.Some research proceedings of capsule separation technique, and of the mobile underwater-platform missile launching problems, were reviewed. Base on the sophisticated semi-theoretical and semi-empirical method, the rigid motion equations of missile and capsule were derived. In underwater launching condition, a comprehensive numerical model of the missile and capsule separation problem was established. The calculation methods were given for the adapter constraint forces and moments, the thrust force acted by gas generator for separation, and forces acted by wave interference.The trajectory numerical simulation program for non-powered capsule underwater launching and separation trajectory between capsule and missile near the free surface was developed. The trajectory numerical simulation program was verified by the results comparison between numerical simulation and the model test.Considering the above model deficiencies, the influence of the capsule base bubble was neglected, CFD method was used to simulate the bubble. A new parallel iteration algorithm for two different programs, Fluent and the trajectory numerical simulation program, was created by redevelopment of Fluent software and application of intermediate data files, therefore, the combination solution method was achieved for Fluent software and the code of trajectory numerical simulation. This method could simulate the trajectory of capsule more reasonable under the influence of base bubble.Finally, base on the above trajectory numerical simulation method, a number of calculations were given under varying parameters, such as height of separation, internal ballistic of gas generator, gap between adapters and capsule, etc. The rule of missile and capsule separation with respect to the variation of parameters was summarized. The results can be used to determinate the separation parameters.更多还原