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    • 10. 发明公开
    • Helicopter with a Tail shroud
    • Hubschrauber mit Heckschutz
    • EP2883791A1
    • 2015-06-17
    • EP13400034.8
    • 2013-12-10
    • AIRBUS HELICOPTERS DEUTSCHLAND GmbH
    • Mores, SebastianD'Alascio, AlessandroGrodau, RainerZhang, QinyinWehle, ChristianProbst, Stefan
    • B64C27/82
    • B64C27/82B64C2027/8254B64C2027/8272
    • The invention is related to a helicopter (1) with a fuselage (2) and a tail rotor in a rotor duct (8) of a shroud (7) mounted to a rear end of a tail boom (3). A vertical fin (6) projects from an upper transition region of said shroud (7) having a left hand and a right hand upper transition edge (11) between respectively a left hand and a right hand annular surface (57) around the rotor duct (8) of the shroud (7) and the vertical fin (6). A bumper (9) projects from a lower transition region of said shroud (7), said lower transition region having a left hand and a right hand lower transition edge between respectively the left hand and the right hand annular surface (57) around the rotor duct (8) of the shroud (7) and the bumper (9). Upper leading edges (12, 32) of said vertical fin (6) and of said shroud (7) are provided and left hand and right hand trailing edges (13, 17) of said shroud (7). A projection of the upper transition edge (11a) to the x-z plane is defined by a spline curve through points Pi (i=1..5) and a projection of the lower transition edge (1 1 b) to the x-z plane is defined by a spline curve through points Pi (i=6..10) defined by their respective coordinates (xi, zi) relative to a Fenestron-Rotor's centre.
    • 本发明涉及一种具有机身(2)的直升机(1)和安装在尾臂(3)的后端的护罩(7)的转子导管(8)中的尾部转子。 垂直翅片(6)从所述护罩(7)的上过渡区域突出,左右手上过渡边缘(11)分别在转子导管周围的左手和右手环形表面(57)之间 (7)和垂直翅片(6)之间的距离(8)。 缓冲器(9)从所述护罩(7)的下过渡区域突出,所述下过渡区域在转子周围分别具有左手和右手环形表面(57)之间的左手和右手下过渡边缘 护罩(7)的导管(8)和保险杠(9)。 所述垂直翅片(6)和所述护罩(7)的上前缘(12,32)设置有所述护罩(7)的左手和右手后缘(13,17)。 上部过渡边缘(11a)到xz平面的投影由通过点Pi(i = 1..5)的样条曲线定义,并且下部过渡边缘(11b)到xz平面的投影被定义 通过相对于Fenestron-Rotor中心由它们各自坐标(xi,zi)定义的点Pi(i = 6..10)的样条曲线。