新一代大型客机复合材料

 大量采用复合材料结构是新一代大型客机机体结构设计的突出特点，用量已达结构重量50%。复合材料结构不仅带来了明显的减重效益，而且带来了结构耐腐蚀、疲劳和维护等性能的改善提高。波音787飞机人性化设计的全复合材料机身使乘坐舒适性和便利性得到显著改善。民机复合材料结构技术重点研究解决了复合材料自然环境老化、大型翼面壁板整体成型、机身大开口区载荷重新分布和应力集中、地面维护装备冲击损伤、健康检测等关键技术问题，并且建立了以中模高强碳纤维/韧性环氧树脂复合材料热压罐成形工艺为主的大型客机复合材料结构材料体系。对复合材料机翼和机身结构的设计和工艺关键技术问题做了较为详尽的介绍。

Composite Structures for New Generation Large Commercial Jet

Extensive use of composite materials is a prominent characteristic of airframe design for the new generation large commercial aircraft.The amount of composite materials has reached up to 50% of the airframe weight.Composite structures not only significantly decrease the structural weight,but also improve the performance of corrosion resistance,fatigue and maintenance.Boeing 787's humanity design of the entire composite fuselage significantly improved passenger comfort and convenience.Technology for large commercial jet composite structures focuses on studying and resolving the natural aging of the composite material,large wing panel integral manufacture,load redistribution and stress concentration in large fuselage opening areas,ground maintenance equipment impact damage,health testing,and other key technical problems.A large commercial aircraft composite structure material system is established based mainly on middle-module high-strength carbon fiber/toughness epoxy composite material autoclave technology.Detailed introduction to the key technical problems of composite wing and fuselage structural design is presented in this paper.