固体火箭发动机内弹道性能的仿真研究

研究发动机燃烧室内压强随时间变化的规律，是固体火箭发动机工作过程分析的主要方面，一般采用实验法可以获得直观可靠的数据，但实验法耗资大、周期长，不易操作。本文根据零维内弹道数学模型，运用龙格库塔法及MATLAB语言对某型固体导弹发动机内弹道工作过程进行数值仿真，画出燃烧室内压强随时间变化的曲线，并进一步分析得出影响发动机内弹道性能的因素，仿真结果与发动机燃烧室内工作情况相符，影响因素分析与实验相一致，为固体火箭发动机内弹道性能研究提供了参考。

Simulate research of solide rocket engine inside trajectory characteristic

Researching the rule of the pressure with the time changing of the engine＇s firebox is the most aspect of analyzing the process of the solid missile engine. Commonly, experimentation can achieve the intuitionistic and credible data, but this method consume much time and money, and not easy to manipulate. According to zeroimensional inside trajectory numerical simulate model,to our country some type solid missile engine, applacating I.onger-Kuta method and the language of matlab launches the inside trajectory numerical simulate of the working process,and drawed the burner pressure-time curve, passing further analysis outed the influence factors of inside trajectory characteristic. The result of simulation is consistent to the fact in engine＇s firebox and analysis of the influence factors is consistent to experimentation. It offers a new idea to researching the capability of the ballistic trajectory.