基于CATIA的固体火箭发动机系统设计

Solid Rocket Motor System Design Based on CATIA

摘要:

发动机图形绘制与性能计算是火箭设计的关键步骤,通过对固体火箭发动机设计过程的分析,提出CATIA参数化图形绘制技术；以单孔管状装药发动机为例,建立了发动机燃烧室与喷管模型,在VC环境下利用CATIA Automation二次开发技术实现了燃烧室与喷管参数化设计,完成了两者装配与动态显示；利用Matcom实现内弹道压力时间曲线计算,发射段轨道分析；最后完成系统软件编制；实际使用情况表明,使用该软件可快速构造发动机,进行全面的性能分析,为固体火箭发动机方案论证与初步设计提供了有力的工具。

Abstract:

Graphics rendering and performance computing on engine are key steps in rocket design. Analysing the process of solid rocket motor design, we put forward parametric design technology using CATIA. We established combustion chamber and nozzle model, take a single hole tubular charge motor for example, we completed combustion chamber and nozzle parametric design by using CATIA automation secondary development technology, completed the assembly and dynamic display. Then, we implemented the internal ballistic pressure time curve calculation and launch trajectory analysis by using Matcom. Finally, we completed the system software . The application shows that this system can construct motor quickly and conduct a comprehensive performance analysis, which also provide powerful tool for design scheme and preliminary design of solid rocket motor.