公开(公告)号：US4927100A

公开(公告)日：1990-05-22

申请号：US264154

申请日：1988-11-11

申请人： Eugene F. Provenzo, Jr. ,  Peter A. Zorn

发明人： Eugene F. Provenzo, Jr. ,  Peter A. Zorn

IPC分类号： A63H27/08 ,  B64C31/028

CPC分类号： B64C31/028 ,  A63H27/08

摘要： An airfoil having two (2) basic components, a sail and spoiler, associated with the leading edge of the sail, is herein disclosed. This unique airfoil design has application in flexible wing aircraft (i.e., ultralites), sport parachutes and sport kites. In the typical sport kite embodiment of this invention, there will generally be at least three (3) aerodynamic flight control surfaces: a sail, a keel, and a flexible resilient spoiler attached to the leading edge of the sail. The sail material is itself resilient, however, sufficiently rigid to maintain a preset configuration without the need for struts, spars or extrinsic physical support. A spoiler, which is located along the entire leading edge of the sail, provides additional structural reinforcement to the sail while undergoing controlled deformation in gusty or high winds. The effect of such deformation of the spoiler causes the sail to stall before any physical damage can occur. The resiliency of the spoiler immediately, thereafter, returns the sail to pre-stall configuration, and flight is thereupon resumed without physical damage to the kite. Under certain conditions, it may be desirable to further enhance the inherent physical strength of the sail along the centerline of the sail coincident with the area of the stress imparted upon the sail by the keel. This is readily accomplished by affixing an additional section of sail construction material, or its equivalent, along the topside surface of the sail, opposite to and coincident with the placement of the keel.

摘要翻译： 本文公开了具有与帆的前缘相关联的两（2）个基本部件，帆和扰流板的翼型件。 这种独特的翼型设计适用于柔性翼型飞机（即超轻轨），运动降落伞和运动风筝。 在本发明的典型的运动风筝实施例中，通常将具有至少三（3）个空气动力学飞行控制表面：连接到帆的前缘的帆，龙骨和柔性弹性扰流板。 帆式材料本身是弹性的，但是足够刚性以保持预设的配置，而不需要支柱，翼梁或外在的物理支撑。 沿着帆的整个前缘定位的扰流板在风向或风向受控变形的同时为帆提供额外的结构加固。 扰流板的这种变形的效果会导致帆在停止之前发生任何物理损坏。 立即将扰流器的弹性恢复到预失速配置，然后飞行恢复，而不会对风筝造成物理伤害。 在某些条件下，可能需要进一步提高沿着帆的中心线的帆的固有的体力，与通过龙骨施加在帆上的应力的面积重合。 这通过沿着帆的顶侧表面附加一段额外的帆构造材料或其等同物来容易地实现，其与龙骨的放置相对并重合。