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公开(公告)号:US20120195767A1
公开(公告)日:2012-08-02
申请号:US13314258
申请日:2011-12-08
申请人: Marc Gervais , Benoit Gresle , Sébastien Finck , Laurent Sudre
发明人: Marc Gervais , Benoit Gresle , Sébastien Finck , Laurent Sudre
IPC分类号: B64C11/16
CPC分类号: B64C11/18 , B64C27/82 , B64C2027/8254 , Y10S416/02 , Y10S416/05
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)。
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公开(公告)号:US08974189B2
公开(公告)日:2015-03-10
申请号:US13314258
申请日:2011-12-08
申请人: Marc Gervais , Benoit Gresle , Sébastien Finck , Laurent Sudre
发明人: Marc Gervais , Benoit Gresle , Sébastien Finck , Laurent Sudre
CPC分类号: B64C11/18 , B64C27/82 , B64C2027/8254 , Y10S416/02 , Y10S416/05
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)。
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