Blunt-leading-edge raked wingtips
    1.
    发明授权
    Blunt-leading-edge raked wingtips 失效
    钝头前缘的甩尾翼尖

    公开(公告)号:US6089502A

    公开(公告)日:2000-07-18

    申请号:US96464

    申请日:1998-06-12

    IPC分类号: B64C3/10 B64C23/06

    摘要: An airplane having a fuselage (11), opposed main wings (12), and blunt-leading-edge raked wingtips (8) is provided. Each main wing includes an outboard end (9) and a leading edge (14) having an outboard end leading-edge nose and nose radius. One blunt raked wingtip (8) is located at each main wing outboard end (9) and includes a leading edge (20) swept back from the main wing leading edge (14). Each blunt raked wingtip (8) further includes a plurality of local airfoils each having a leading-edge nose radius and a chord. The nose radius is greater than about 2% of the local chord for the majority of the airfoils. The relative bluntness of the raked wingtips minimizes boundary-layer separation, drag associated with boundary-layer separation, and premature buffeting of the aircraft during low speed flight.

    摘要翻译: 提供具有机身(11),相对的主翼(12)和钝头前缘的倾斜翼尖(8)的飞机。 每个主翼包括外侧端部(9)和前缘(14),前缘(14)具有外侧端部前缘鼻部和鼻部半径。 一个钝的倾斜翼尖(8)位于每个主翼外侧端(9),并且包括从主翼前缘(14)向后扫掠的前缘(20)。 每个钝角的翼尖(8)还包括多个局部翼型件,每个翼型件具有前缘的前半径和弦。 大多数机翼的鼻子半径大于当地和弦的约2%。 倾斜翼尖的相对钝度使边界层分离,边界层分离相关的阻力和飞机低速飞行过早的震动最小化。