火箭防暴弹发动机的内弹道解析

Analysis of Riot of Rocket Engine Interior Ballistics

研究防暴弹发动机燃烧室优化控制问题,为了实现对火箭防暴弹发动机燃烧室内压强的控制并确定其影响因素,解决燃烧室内各点压强分布不均衡的问题,提出了阶段分析法,并引用"零维"压强这一概念,在选用"零维"内弹道模型的基础上,采用龙格库塔法,利用MATLAB语言仿真技术进行编程测试,对"零维"条件下的内弹道进行数值仿真,并将模拟结果与实验结果进行分析比对,验证了内弹道模型和仿真结果的正确性,得出了在发动机工作过程中,燃烧室内压强随时间的变化规律,明确了影响压强的各个因素,为固体火箭发动机内弹道性能研究以及外弹道的计算提供了理论依据。

In order to achieve the control of anti - riot shells of the rocket engine combustion chamber pressure and determine its impact factor to solve the problem＇ that combustion chamber pressure distribution is not balanced, we proposed the stage analysis method and introduced the concept of ＂zero - dimensional＂ pressure. Based on the zero-dimensional ballistics model, the Runge -Kutta method and MATLAB simulation technology were used for programming and testing under the conditions of the ＂zero - dimensional ＂interior ballistics. The simulation and experimental results were analyzed to verify the correctness of the interior ballistic model and simulation results obtained in the engine working process. It was clarifed that the combustion chamber pressure changs with time variation and the various factors that affect pressure were obtained.