复合材料与金属相比有较高的比强度与比模量,因此复合材料整体结构设计与生产技术是减轻结构重量、降低生产成本的一种有效途径,是目前国际上飞机复合材料结构设计与制造领域重点发展的关键技术之一。自20世纪60年代开始,复合材料零部件开始得以在直升机上应用,使直升机的重量效率(有效载荷/起飞重量)有了大幅度提高。复合材料在直升机上的应用经历了从次承力结构至主承力结构缓慢发展的过程。尽管已大量应用于直升机 Composite materials and metal compared to a higher specific strength and specific modulus, so the overall structure of composite materials design and manufacturing technology to reduce the weight of the structure, reduce production costs is an effective way is the international aircraft structural design and composite materials One of the key technologies in the manufacturing field. Since the 1960s, composite parts began to be applied to helicopters, resulting in a dramatic increase in the helicopter’s weight efficiency (payload / take-off weight). The application of composite materials in helicopters has experienced a slow development from sub-load-bearing structure to main load-bearing structure. Although it has been widely used in helicopters