公开(公告)号：US06669447B2

公开(公告)日：2003-12-30

申请号：US10020315

申请日：2001-12-18

申请人： Jennifer M Norris ,  David S Knott ,  Adrian M Jones ,  David R Midgelow ,  Robert M Hall

发明人： Jennifer M Norris ,  David S Knott ,  Adrian M Jones ,  David R Midgelow ,  Robert M Hall

IPC分类号： F01D510

CPC分类号： F01D5/16 ,  F01D5/147 ,  F01D5/18 ,  Y10S416/50 ,  Y10T29/49339

摘要： A gas turbine engine fan blade (26) comprises a root portion (40) and an aerofoil portion (42). The aerofoil portion (42) has a leading edge (44), a trailing edge (46), a concave metal wall portion (50) extending from the leading edge (44) to the trailing edge (46) and a convex metal wall portion (52) extending from the leading edge (44) to the trailing edge (46). The aerofoil portion (42) has a hollow interior (54) and the interior (54) of the aerofoil portion (42) is at least partially filled with a vibration damping material (56). The vibration damping material (56) comprises a material having viscoelasticity for example one formed by mixing an amine terminated polymer and bisphenol a-epichlorohydrin epoxy resin.

公开(公告)号：US6155788A

公开(公告)日：2000-12-05

申请号：US334940

申请日：1999-06-17

申请人： Peter R Beckford ,  David R Midgelow ,  David S Knott

发明人： Peter R Beckford ,  David R Midgelow ,  David S Knott

IPC分类号： F01D5/30

CPC分类号： F01D5/303 ,  F01D5/3007

摘要： A fan rotor assembly (30) for a gas turbine engine (10) comprises a fan rotor (32) and a plurality of radially extending fan blades (34). Each fan blade (34) has a root (64) which is retained in a corresponding groove (54) in the periphery of the hub (54) of the fan rotor (32). Each fan blade root (64) comprises four axially spaced root portions (66, 68, 70 and 72) which locate in a corresponding number of axially spaced groove portions (56, 58, 60 and 62). The flanks (94, 98) of two of the root portions (66, 70) are arranged at an angle to the axis of the fan rotor (32) and the flanks (96, 100) of the other two root portions (68, 72) are arranged at an angle in the opposite sense. The flanks (74, 76, 78 and 80) of the groove portions (56, 58, 60 and 62) are arranged at the same angle as the flanks (94, 96, 98 and 100) of the corresponding root portions (66, 68, 70 and 72). The arrangement provides improved retention of the fan blades (34) and reduces the weight of the fan blades (34) and fan rotor (32).

摘要翻译： 一种用于燃气涡轮发动机（10）的风扇转子组件（30）包括风扇转子（32）和多个径向延伸的风扇叶片（34）。 每个风扇叶片（34）具有根部（64），其保持在风扇转子（32）的轮毂（54）的周边中的对应的凹槽（54）中。 每个风扇叶片根部（64）包括四个轴向间隔开的根部（66,68,70和72），其位于相应数量的轴向隔开的槽部分（56,58,60和62）中。 两个根部（66,70）两侧的侧面（94,98）与风扇转子（32）的轴线成一定角度，另外两个根部（68，70）的侧面（96,100） 72）以相反的意义上的角度排列。 槽部分（56,58,60和62）的侧面（74,76,78和80）以与相应根部（66,68和60）的侧面（94,96,98和100）相同的角度布置， 68,70和72）。 该装置提供了风扇叶片（34）的改进的保持并且减小了风扇叶片（34）和风扇转子（32）的重量。