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公开(公告)号:US4606519A
公开(公告)日:1986-08-19
申请号:US637908
申请日:1984-08-06
申请人: Demeter G. Fertis , Larry L. Smith
发明人: Demeter G. Fertis , Larry L. Smith
CPC分类号: B64C21/10 , Y02T50/166
摘要: An airfoil having improved aerodynamic characteristics incorporates a leading edge (13) and a trailing edge (14) longitudinally displaced therefrom. A continuous lower surface (21), defining the lower camber of the airfoil, extends from the leading edge (13) to the trailing edge (14). The upper surface of the airfoil incorporates a first upper surface (22) extending rearwardly from the leading edge (13) and terminating in an offset (20), and at least a second upper surface (23) extending rearwardly therefrom. The first upper surface (22) defines a first upper camber portion of the airfoil and the second upper surface (23) defines a second upper camber portion thereof.
摘要翻译: 具有改善的空气动力特性的翼型包括前缘(13)和从其纵向移位的后缘(14)。 限定翼型件的下弧面的连续下表面(21)从前缘(13)延伸到后缘(14)。 翼型件的上表面包括从前缘(13)向后延伸并终止于偏移(20)的第一上表面(22)和从其向后延伸的至少第二上表面(23)。 第一上表面(22)限定翼型件的第一上部弧形部分,并且第二上表面(23)限定其第二上部弧形部分。