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    Ultralight aircraft with freely rotating wing
    31.
    发明授权
    Ultralight aircraft with freely rotating wing 失效
    超轻型飞机具有自由旋转的翼

    公开(公告)号：US4596368A

    公开(公告)日：1986-06-24

    申请号：US544261

    申请日：1983-10-21

    申请人： Hugh J. Schmittle

    发明人： Hugh J. Schmittle

    IPC分类号： B64C3/38 ,  B64C31/028

    CPC分类号： B64C31/028 ,  B64C3/385 ,  Y10S244/903

    摘要： An ultralight aircraft of lightweight minimal construction includes a collapsible Rogallo type wing from which a hang cage is suspended by a main hinge assembly. The wing includes a longitudinal keel of lightweight tubular construction, leading edge members and a cross brace. A flexible lifting panel is secured along and between the wing members to define a lifting surface. The hinge includes a pitch hinge bracket having an upper longitudinal sleeve in which the keel is clamped. A ball joint connection secured to the bracket is connected to upwardly extending hang cage struts by means of hinge connecting plates to permit free rotation of the wing about a spanwise axis extending longitudinally through the cross brace. Rotation of the wing without pilot intervention induced by positive or negative wind gusts striking the flexible wing panel causes the angle of incidence between the wing and hang cage to vary so that the wing presents a relatively constant angle of attack to relative wind enabling the aircraft to be essentially stall free during flight. A cable and spreader tube arrangement interconnecting forward and trailing ends of the keel to the cross brace undergoes tension and compression loading to distribute bending stress acting on the keel during excessive wind loading to other parts of the aircraft.

    摘要翻译： 轻型最小结构的超轻型飞机包括可折叠的Rogallo型翼，悬挂笼由主铰链组件悬挂。 机翼包括轻质管状结构的纵向龙骨，前缘构件和十字架。 柔性提升面板固定在翼构件之间并且在翼构件之间，以限定提升表面。 铰链包括具有上纵向套筒的俯仰铰链支架，其中龙骨被夹紧。 通过铰链连接板将固定到托架上的球形接头连接件连接到向上延伸的悬挂支架上，以允许机翼围绕纵向延伸穿过横梁的翼展方向轴自由旋转。 没有由正或负阵风引起的飞行员干涉的机翼的旋转撞击柔性翼板导致机翼和吊架之间的入射角度发生变化，使得机翼相对于相对风力具有相对恒定的迎角，使得飞机能够 在飞行中基本上是空闲的。 将龙骨的前端和后端相互连接到横梁的电缆和扩张管布置经受张力和压缩载荷，以在过度的风载入飞行器的其它部分期间分布作用在龙骨上的弯曲应力。