“Kevlar”对位芳纶纤维正在为新型客机用发动机的减重和提高安全性等方面做出贡献。使用这种纤维可比原设计大幅度减轻重量,防止叶片破碎并降低耗油量。混合增强纤维(芳纶纤维、碳纤维和玻璃纤维)的使用,使世界上最大的复合材料飞机螺旋桨比传统的金属设计轻50％,例如法国Ratier—Figeac螺旋桨制造厂已将双发运输机上 Kevlar para-aramid fibers are contributing to weight reduction and safety improvements for new passenger aircraft engines. The use of this fiber can significantly reduce the weight of the original design, to prevent blade breakage and reduce fuel consumption. The use of hybrid reinforcing fibers (aramid fibers, carbon fibers and glass fibers) made the world’s largest composite aircraft propeller 50% lighter than conventional metal designs. For example, the French manufacturer of the Ratier-Figeac propeller has double-