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| Development of external design and its CAD application |
| QIU Ming-Xing |
| Shenyang Engine Design and Research Institute, Aviation Industry Coporation Ⅰ, Shenyang 110015, China |
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Abstract The history of aeroengine external design technology development was reviewed and the general process of aeroengine external design is introduced. The distinctions among traditional external design, 2D & 3D CAD external design are distilled. This paper focused on the process, method, features and advantages of external design of aeroengine digital mockup by applying UG, which indicates that external 3D digital design technique of aeroengine is necessary and feasible. Through this, domestic factories can get rid of dependence on physical prototype machine in external design and realize the transformation from physical mockup technique to digital mockup one in a short period. Finally, the further developing plan of aeroengine external design is expected.
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Published: 28 October 2005
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外部设计技术发展及计算机辅助设计的应用
回顾了中外航空发动机外部设计技术发展历程，阐述了航空发动机外部设计的一般过程，比较分析了传统外部设计、CAD二维辅助外部设计和CAD三维数字化外部设计技术的区别，重点讨论了用UG三维设计软件进行航空发动机数字样机外部设计的过程、方法、特点及优势。说明用CAD进行航空发动机外部三维数字化设计是必要的、可行的，可以在国内较短时间内摆脱外部设计对金属样机的依赖，实现由金属样机到数字样机技术的转变。最后展望了航空发动机外部设计技术发展需要进一步采取的技术措施。
关键词：
航空发动机,
计算机辅助设计,
外部设计,
数字样机,
Unigraphics
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