公开(公告)号：US20180087388A1

公开(公告)日：2018-03-29

申请号：US15699304

申请日：2017-09-08

Applicant: Rolls-Royce plc

Inventor： Antonios KALOCHAIRETIS

IPC: F01D5/30

CPC classification number: F01D5/303 ,  F01D5/3046 ,  F01D5/326 ,  F05D2220/36 ,  F05D2240/20 ,  F05D2260/30

Abstract: A gas turbine engine comprises a disc having a disc slot and a circumferential groove extending from the slot. A blade having a blade root positioned in the disc slot. The blade root has an integrally formed circumferential protrusion that is received in the circumferential groove of the disc.

公开(公告)号：US20180238342A1

公开(公告)日：2018-08-23

申请号：US15898305

申请日：2018-02-16

Applicant: ROLLS-ROYCE plc

Inventor： Antonios KALOCHAIRETIS ,  Gabriel GONZALEZ-GUTIERREZ

IPC: F04D29/34 ,  F04D29/32 ,  F02K3/06

Abstract: A fan for a gas turbine engine, the fan comprising a first set of fan blades each fan blade comprising a root and an axial retention feature provided on the root at a first position, and a second set of fan blades each fan blade comprising a root and an axial retention feature provided on the root at a second position. Relative to the respective blade on which the respective retention feature is provided, the first position is different to the second position.

公开(公告)号：US20160097287A1

公开(公告)日：2016-04-07

申请号：US14847889

申请日：2015-09-08

Applicant: ROLLS-ROYCE PLC

Inventor： Keith Christopher GOLDFINCH ,  Antonios KALOCHAIRETIS

IPC: F01D5/32

CPC classification number: F01D5/323 ,  F01D5/326 ,  F02K3/06 ,  F04D29/322 ,  F05D2220/36 ,  F05D2250/71 ,  F05D2260/30 ,  F05D2260/36 ,  F05D2300/702

Abstract: Fan for gas turbine engine includes hub and annular array of fan blades mounted to hub and extending radially outwardly from hub, each fan blade includes blade root. The hub includes plurality of hub grooves having shape complimentary to shape of blade root and each hub groove receives and radially retains one blade root. A slot is provided on the suction side and on the pressure side of each blade root. Plurality of keys is provided, each key engages with slots in one blade root and with corresponding hub groove so as to axially retain fan blade. The key includes two arms and joining member, two arms are received in slots provided on blade root and joining member extends between the arms. Interface is defined between key arms and slots in blade root, and greater or equal percentage of interface is curved than is planar.

Abstract translation: 用于燃气涡轮发动机的风扇包括安装到毂并且从毂径向向外延伸的毂和环形阵列的风扇叶片，每个风扇叶片包括叶片根部。 轮毂包括多个轮毂槽，其具有与叶片根部的形状互补的形状，并且每个轮毂槽容纳并径向保持一个叶根。 在每个叶片根部的吸力侧和压力侧设置有槽。 提供多个键，每个键与一个叶片根部中的狭槽和相应的毂槽啮合，以便轴向保持风扇叶片。 键包括两个臂和连接构件，两个臂被接收在设置在叶片根部上的槽中，并且连接构件在臂之间延伸。 接口定义在刀臂根部的键臂和槽之间，大于或等于百分比的界面比平面弯曲。