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    • 27. 发明授权
    • Composite arrow vane
    • 复合箭头叶片
    • US08602926B2
    • 2013-12-10
    • US13448559
    • 2012-04-17
    • Larry R. GriffithAnne-Marie Bebak
    • Larry R. GriffithAnne-Marie Bebak
    • F42B6/06
    • F42B6/06
    • Disclosed is a composite arrow vane for mounting to a projectile. The composite arrow vane is constructed of a composite material that includes a polymer matrix around structural elements. In some embodiments, the polymer matrix may be a thermoplastic polyurethane. The structural elements compounded into the polymer may be voids, hollow glass beads or just about any structure having a weight per unit volume that is less than the weight per unit volume of the polymer matrix. Advantageously, the composite material allows for reduced dimensions of the composite arrow vane because the increased tensile strength of the material allows for size reductions without significantly compromising vane performance. Similarly, the lighter weight per unit volume of the composite material as compared to a homogeneous polymer allows for increased flight speed of the projectile.
    • 公开了一种用于安装到射弹的复合箭头叶片。 复合箭头叶片由包括围绕结构元件的聚合物基质的复合材料构成。 在一些实施方案中,聚合物基质可以是热塑性聚氨酯。 复合到聚合物中的结构元素可以是空隙,中空玻璃珠,或者只是具有小于聚合物基体的每单位体积重量的每单位体积重量的任何结构。 有利地,复合材料允许复合材料箭头叶片的尺寸减小,因为材料的增加的拉伸强度允许尺寸减小而不显着损害叶片性能。 类似地,与均匀聚合物相比,复合材料的每单位体积重量更轻,允许弹丸的飞行速度提高。