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    • 1. 发明授权
    • Optimum aerodynamic bicycle wheel
    • 最佳气动自行车车轮
    • US09457618B2
    • 2016-10-04
    • US14298234
    • 2014-06-06
    • ENVE Composites, LLC
    • Simon Smart
    • B60B21/02B60B1/00
    • B60B21/02B60B1/003B60B21/025B60B2900/1216B60Y2200/13Y02T10/88
    • Embodiments described herein improve airflow around bicycle wheels by providing for one or more of: (1) a optimum leading edge width of a rim for preventing early stall in cross winds, while still allowing for sufficient stability without undue drag, while not unnecessarily increasing the rotating wheel and drag on the frame; (2) a sidewall shape with a subtle camber angle at the leading, which defines a rate of radius change at the max width of the rim—which further defines the max width and placement along the chord length for optimizing the aerodynamic properties of the rim; (3) a continuous rate of change of curvature at a spoke face, which fundamentally improves the performance and stability by generating a side force at higher yaw angles; and (4) wheel sets with a wider front rim relative to a narrower rear wheel to assist in flow attachment in high crosswind areas.
    • 本文描述的实施例通过提供以下中的一个或多个来提供自行车车轮周围的气流:(1)用于防止交叉风中的早期失速的边缘的最佳前缘宽度,同时仍然允许足够的稳定性而不会有过度阻力,同时不会不必要地增加 旋转轮子并拖动在框架上; (2)在前缘处具有微小外倾角的侧壁形状,其限定在轮辋的最大宽度处的半径变化率,其进一步限定最大宽度和沿着弦长的位置,以优化轮辋的空气动力特性 ; (3)轮辐面的连续的曲率变化率,通过在较高的偏转角度下产生侧力,从根本上改善了性能和稳定性; 和(4)相对于较窄的后轮具有较宽的前缘的轮组,以帮助在高侧风区域中的流动附接。