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与金属材料相比,复合材料具有比强度和比刚度高、性能可设计和易于整体成形等许多优异特性,越来越多地应用到飞机结构上。理论分析表明,采用复合材料制造飞机主体结构可以使结构重量减轻20%~30%。结构重量的减轻导致所需的机翼面积减小、所需推力减小,从而使发动机重量减轻,进而提高发动机燃油使用效率、减低油耗。结构重量减轻30%,燃油消耗可以降低7%~15%,直接降低了运营成本。因此,研究复合材料机翼结构优化
Compared with metallic materials, composites have many excellent properties such as higher specific strength and stiffness, easier design and easier overall forming, and are more and more applied to aircraft structures. Theoretical analysis shows that the use of composite materials to make the main structure of the aircraft can reduce the weight of the structure by 20% to 30%. Reducing the weight of the structure results in a reduction of the required area of the airfoil and the reduction of thrust required, thereby reducing the weight of the engine, thereby improving the fuel efficiency of the engine and reducing the fuel consumption. Structure weight reduction of 30%, fuel consumption can be reduced by 7% to 15%, directly reducing operating costs. Therefore, the study of composite wing structure optimization