本文主要介绍了多弧段曲线形状优化、曲面开孔形状优化和叶片罩量形状优化3种新型结构设计技术的进展以及在航空发动机零部件结构研制中的应用情况。事实上,3种新型优化设计技术的应用并不局限于航空发动机零部件的设计,在飞机、运载火箭平台以及宇宙飞船的结构轻量化和强度设计方面均有很好的应用前景。技术回顾随着计算机辅助技术与数值分析技术的发展,现代结构优化设计方法在飞行器结构设计中的应用日新月异。从20世纪五六十年代开始, This paper mainly introduces the development of three new structural design techniques, such as the optimization of multi-arc curve shape, the optimization of the shape of the curved surface and the optimization of the shape of the blade cover, and the application in the development of the structure of the aero-engine parts. In fact, the application of the three new optimization design techniques is not limited to the design of aeroengine components, and has good application prospects in the structural lightweight and strength design of aircraft, launch vehicle platforms and spacecraft. Technical Review With the development of computer-aided technology and numerical analysis technology, the application of modern structural optimization design method in aircraft structural design is changing rapidly. From the fifties and sixties of the 20th century,