公开(公告)号：EP0622526A1

公开(公告)日：1994-11-02

申请号：EP94300924.1

申请日：1994-02-08

申请人： TELEFLEX INCORPORATED

发明人： Roberts, William B.

IPC分类号： F01D5/14 ,  F01D5/24 ,  F02C7/04

CPC分类号： F01D5/20 ,  F01D5/143 ,  F01D5/22 ,  F01D11/12 ,  F05D2220/327 ,  Y02T50/673 ,  Y10S415/914

摘要： An axial flow transonic turbofan jet engine includes a hub (26) from which radiate a plurality of rotor blades (50). A casing (12) surrounds and shrouds the rotor blades (50). Part-span dampers (56) are located between adjacent rotor blades (50) in an annular pattern to stiffen the elongated rotor blades (50) during operation. The distal tips (54) of the rotor blades (50) are convexed and spin within a rub strip (62) embedded within the casing (12). The rub strip (62) includes an annularly troughed contour (60) to closely conform with the convex tips (54) of the rotor blades (50). The hub (26) may also include an annularly troughed contour (60) formed along the roots (52) of the rotor blades (50). The annularly troughed contours (60) in the hub (26) and in the casing (12) are radially aligned with the part-span dampers (56) to reduce drag between the casing (12) and the hub (26) caused by the part-span dampers (56) at transonic speeds.

摘要翻译： 环形壳体（12）轴向地传导流体，限定中心纵向轴线（A）。 轮毂（26）绕壳体内的轴线可旋转地支撑。 转子叶片（50）与轮毂间隔开并辐射，每个转子叶片包括沿周向互连下一个相邻转子叶片的部分跨度阻尼器（56）。 在轮毂（26）和壳体（12）中的一个中形成区域规则（58），用于减小由跨距速度由部分跨度阻尼器（56）引起的壳体和轮毂之间的阻力。 区域规则包括环形花纹轮廓（60）。 齿形轮廓与部分跨度阻尼器径向对准。

公开(公告)号：EP0622526B1

公开(公告)日：1997-09-17

申请号：EP94300924.1

申请日：1994-02-08

申请人： TELEFLEX INCORPORATED

发明人： Roberts, William B.

IPC分类号： F01D5/14 ,  F01D5/24 ,  F02C7/04

CPC分类号： F01D5/20 ,  F01D5/143 ,  F01D5/22 ,  F01D11/12 ,  F05D2220/327 ,  Y02T50/673 ,  Y10S415/914