BLADE FOR A HELICOPTER ANTI-TORQUE DEVICE
    1.
    发明申请
    BLADE FOR A HELICOPTER ANTI-TORQUE DEVICE 有权
    用于直升机防扭装置的刀片

    公开(公告)号:US20120195767A1

    公开(公告)日:2012-08-02

    申请号:US13314258

    申请日:2011-12-08

    IPC分类号: B64C11/16

    摘要: A blade (1) for a tail anti-torque device of a helicopter, said device comprising a ducted rotor (13). The blade (1) has an assembly of sections, a leading edge (2) and a trailing edge (3); a stacking line (4) of the profiles extending at a distance lying in the range 25% to 50% of the chord (C). The stacking line (4) presents a shape that is curved having successively from the root (5) to the end (6) of the blade a back sweep, a forward sweep, and a last back sweep; and a chord (C) that becomes larger going towards the end (6) of the blade (1) over at least the end profile (1a).

    摘要翻译: 一种用于直升机的尾部抗扭矩装置的叶片(1),所述装置包括导管转子(13)。 叶片(1)具有部分组件,前缘(2)和后缘(3); 所述型材的堆叠线(4)在和弦(C)的25%至50%的范围内延伸。 堆叠线(4)具有从叶片的根部(5)到叶片(6)连续地弯曲的形状,即反向扫掠,向前扫掠和最后的反向扫描; 和至少在端部轮廓(1a)上朝着叶片(1)的端部(6)变大的弦杆(C)。

    Blade for a helicopter anti-torque device
    2.
    发明授权
    Blade for a helicopter anti-torque device 有权
    用于直升机防扭矩装置的刀片

    公开(公告)号:US08974189B2

    公开(公告)日:2015-03-10

    申请号:US13314258

    申请日:2011-12-08

    IPC分类号: B64C11/16 B64C11/18 B64C27/82

    摘要: A blade (1) for a tail anti-torque device of a helicopter, said device comprising a ducted rotor (13). The blade (1) has an assembly of sections, a leading edge (2) and a trailing edge (3); a stacking line (4) of the profiles extending at a distance lying in the range 25% to 50% of the chord (C). The stacking line (4) presents a shape that is curved having successively from the root (5) to the end (6) of the blade a back sweep, a forward sweep, and a last back sweep; and a chord (C) that becomes larger going towards the end (6) of the blade (1) over at least the end profile (1a).

    摘要翻译: 一种用于直升机的尾部抗扭矩装置的叶片(1),所述装置包括导管转子(13)。 叶片(1)具有部分组件,前缘(2)和后缘(3); 所述型材的堆叠线(4)在和弦(C)的25%至50%的范围内延伸。 堆叠线(4)具有从叶片的根部(5)到叶片(6)连续地弯曲的形状,即反向扫掠,向前扫掠和最后的反向扫描; 和至少在端部轮廓(1a)上朝着叶片(1)的端部(6)变大的弦杆(C)。