新型飞机设计的主导思想是减少油耗、提高飞行速度、增加载重量,以便提高经济效益。因此,在结构设计上尽可能要求减轻机体重量,在选材方面采用此强度高的先进材料。在M(马赫)数为2.5以下的新型飞机中,主要结构材料仍为铝合金。美国波音-767客机的机体结构材料81％是铝材,波 The main idea of ​​the new aircraft design is to reduce fuel consumption, increase flight speed, increase the load, in order to improve economic efficiency. Therefore, the structural design as much as possible to reduce body weight, in the selection of materials using this high strength of advanced materials. In new aircraft with Mach number 2.5 or less, the main structural material is still aluminum. 81% of the body structure material of American Boeing -767 airliner is aluminum, wave