固体火箭发动机的CAD和CAM设想

A CONSIDERATION ON CAD AND CAM OF SOLID PROPELLANT ROCKET MOTOR(SPRM)

关键词:  固体推进剂火箭发动机  计算机辅助设计  计算机辅助制造  数值模拟

Key words:  Solid propellant rocket engine  Computer aided design  Computer aided manufacturing  Numerical Simulation

摘要:

提出固体火箭发动机领域计算机辅助设计（ＣＡＤ）和计算机辅助制造（ＣＡＭ）的流程图，并认为结构装药设计的性能预示和热防护计算是发动机理论和结构设计的中心内容，计算机制图是设计思想的最终表达。性能预示的核心是考虑燃烧和流动相互作用的工作过程的数值模拟，热防护设计的核心是烧蚀、传热和强度计算。ＣＡＤ和ＣＡＭ系统应当随时吸收新的研究成果，高水平的核心研究成果，对固体火箭发动机性能预示的准确度和理论设计水平的提高具有重要作用。

Abstract:

The flow profiles by CAD (computer aided design) and CAM (computer aided manufacture) of SPRM are proposed in the paper. Authors consider that the performance prediction combined with grain design and thermo-protection calculation are the main content in theory and structure design of SPRM, and drawing by computer is the final expression of design idea. The core of performance prediction is the numerical simulation of operating process which regards the function each other between combustion and flow, and the core of thermo-protection design is ablation, heat-transfer and stress calculation. CAD and CAM system should absorb at any time new research achievements. The achievements of high-level core research possess the function of holding the balance for raising prediction accuracy and theory design level of SPRM performance prediction.