Gas turbine engine
    85.
    发明授权

    公开(公告)号:US10989112B2

    公开(公告)日:2021-04-27

    申请号:US16411341

    申请日:2019-05-14

    申请人: ROLLS-ROYCE plc

    摘要: A highly efficient gas turbine engine is provided. The fan of the gas turbine engine is driven from a turbine via a gearbox, such that the fan has a lower rotational speed than the driving turbine, thereby providing efficiency gains. The efficient fan system is mated to a core that has low cooling flow requirements and/or high temperature capability, and which may have particularly low mass for a given power.

    Turbine, gas turbine, and method of disassembling turbine blades

    公开(公告)号:US10968745B2

    公开(公告)日:2021-04-06

    申请号:US16506991

    申请日:2019-07-09

    摘要: A turbine, a gas turbine, and a method of disassembling turbine blades, capable of ensuring stable sealing performance as well as facilitating disassembly of turbine blades are provided. The turbine may include a rotor disk including a plurality of slots formed therein, a plurality of turbine blades spaced apart from each other by a predetermined distance in a circumferential direction of the rotor disk on an outer peripheral surface, each of the turbine blades being inserted into an associated one of the slots, and a retainer sealing a cooling passage defined between the rotor disk and the turbine blade, wherein the turbine blade includes an airfoil-shaped blade part, a root part inserted into the rotor disk, and a platform part located between the blade part and the root part, and the root part includes a blade hook protruding therefrom to support the retainer.

    Method and drive-out device for driving out a blade

    公开(公告)号:US10953526B2

    公开(公告)日:2021-03-23

    申请号:US15746971

    申请日:2016-06-30

    发明人: Kai Mielich

    IPC分类号: B25B27/02 F01D5/30

    摘要: A method is provided having the following steps: a) providing a drive-out device which has a drive-out punch that is actuated via a hydraulic cylinder; b) positioning the drive-out device between two adjacent wheel discs of the rotor such that a longitudinal axis of the drive-out punch is flush with the receiving groove of the blade to be driven out; c) adjusting a maximum pressure which can be applied to the hydraulic cylinder; d) extending the drive-out punch such that the drive-out punch presses against the blade root of the blade to be driven out with increasing pressure; e) reducing the pressure as soon as the pressure has reached the maximum pressure; and f) cyclically repeating the steps d) and e) until the blade has been removed from the receiving groove. A drive-out device is further provided.

    Composite airfoil assembly for an interdigitated rotor

    公开(公告)号:US10941665B2

    公开(公告)日:2021-03-09

    申请号:US15971249

    申请日:2018-05-04

    IPC分类号: F01D5/30 F01D5/28

    摘要: Rotor assemblies and methods for manufacturing airfoils for rotor assemblies are provided. For example, a rotor assembly comprises a rotary structure extending circumferentially about an axial centerline of a gas turbine engine and an airfoil having a root and a tip. The root is coupled to the rotary structure and has a bulbous shape. The airfoil is formed from a plurality of composite plies, a portion of which defines at the root first and second end surfaces, which are in contact with the rotary structure and together define a chisel-shaped end of the root. In another embodiment, a rotor assembly comprises an outer rotor extending circumferentially about an axial centerline of a gas turbine engine and a composite outer rotor blade having a root and a tip. The blade root is coupled to the outer rotor and extends inward along a radial direction toward the axial centerline.

    COMPOSITE PROPULSOR BLADE RETENTION STRUCTURE AND METHOD FOR CONSTRUCTING SAME

    公开(公告)号:US20210062661A1

    公开(公告)日:2021-03-04

    申请号:US17004592

    申请日:2020-08-27

    发明人: Eric Stephen Loos

    IPC分类号: F01D5/30 F01D5/28

    摘要: A structure and a method of constructing a root joint and blade retention mechanism of a composite airfoil of a propulsor blade is presented. The retention assembly includes an inner sleeve configured to retain a root area of the composite propulsor blade. The inner sleeve is fixedly attached to an inner surface of the root area by a resin transfer molding process. An outer sleeve is bonded to an outer surface of the composite propulsor blade after the completion of the resin transfer molding process. At least one bearing assembly is disposed within an annular groove of the outer sleeve. The bearing assembly rotatably couples the propulsor blade and the retention assembly to a hub assembly.