公开(公告)号：US20250163820A1

公开(公告)日：2025-05-22

申请号：US18512672

申请日：2023-11-17

Applicant: Rolls-Royce Corporation

Inventor： Michael Nesteroff ,  Mark E. Whitlock ,  Nathanael Cooper ,  Jonathan Acker

IPC: F01D17/12 ,  F01D9/04

Abstract: A compressor assembly for a gas turbine engine includes a shroud assembly, an outer case assembly, and a plurality of locating bolt assemblies. The shroud assembly extends circumferentially around the engine axis. The outer case assembly includes an outer case that extends circumferentially around the axis and a plurality of fasteners that couple the shroud assembly with the outer case. The plurality of locating bolt assemblies extend into the outer case and abut the shroud assembly at a predetermined axial location to axially locate the shroud assembly.

公开(公告)号：US11002284B2

公开(公告)日：2021-05-11

申请号：US16433089

申请日：2019-06-06

Applicant: Rolls-Royce Corporation

Inventor： Michael Nesteroff ,  Jonathan Acker ,  Nate Cooper ,  Nathan Ottow

IPC: F04D29/16 ,  F01D11/24 ,  F04D27/02 ,  F04D29/62 ,  F01D11/18 ,  F01D11/08 ,  F04D29/42 ,  F01D11/22

Abstract: A system for controlling the clearance distance between an impeller blade tip of a centrifugal compressor and a radially inner surface of an impeller shroud in a turbine engine. The system comprises a thermal driver coupled between the impeller shroud and engine casing by hinged linkages. The thermal driver includes an annular ring and annular seal which together define thermal driver cavity. Relatively warm or relatively cool air supplied to the thermal driver cavity cause expansion and contraction, respectively, of the annular ring which is translated by linkages into axially forward and aft motion, respectively.

公开(公告)号：US10731660B2

公开(公告)日：2020-08-04

申请号：US16104671

申请日：2018-08-17

Applicant: Rolls-Royce Corporation

Inventor： Michael Nesteroff ,  Jonathan Acker ,  Albert Moncada ,  David Templin

IPC: F04D29/44 ,  F01D9/04

Abstract: According to some aspects of the present disclosure, a diffuser for a centrifugal compressor is provided. The diffuser may comprise an outerband casing and an innerband casing. The outerband casing may comprise an annular flowpath boundary member that has a flowpath boundary surface. The flowpath boundary member may define a plurality of vane-receiving pockets spaced about a circumference of the member. The innerband casing may comprise an annular flowpath boundary member that has a flowpath boundary surface. The flowpath boundary member may comprise a plurality of vanes spaced about a circumference of the member. Each of said plurality of vanes may comprise a vane body that extends from the flowpath boundary surface, a platform head that has a lateral dimension normal to the length of the vane body greater than the lateral dimension of the vane body, and a fillet between the platform head and the vane body. The innerband casing may be positioned so that the platform head of each of the plurality of vanes is received in a respective vane-receiving pocket defined by the flowpath boundary member of the outerband casing. When received, the fillet of each of the plurality of vanes may be adjacent the flowpath boundary surface of the flowpath boundary member of said outerband casing. The flowpath boundary surfaces of each of said casings and said vanes define a fluid flowpath in said diffuser.

公开(公告)号：US10508660B2

公开(公告)日：2019-12-17

申请号：US15789456

申请日：2017-10-20

Applicant: Rolls-Royce Corporation ,  Rolls-Royce North American Technologies Inc.

Inventor： Christopher Hall ,  Russell White ,  Jonathan Acker ,  Lyle Helvie

IPC: F04D29/56 ,  F04D29/64

Abstract: An apparatus and method of controlling the position of a variable vane in a compressor and a kit for adding such apparatus to the compressor are disclosed. The vane is coupled to a unison ring, a cam is secured to a torque tube, a cam follower is secured to the unison ring. The cam follower is secured such that a wall of the cam follower is in contact with the cam. Rotation of the torque tube causes movement of the cam, and movement of the cam moves the cam follower, thereby moving the unison ring and the variable vane coupled thereto.

公开(公告)号：US10458429B2

公开(公告)日：2019-10-29

申请号：US15234601

申请日：2016-08-11

Applicant: Rolls-Royce Corporation ,  Rolls-Royce North American Technologies Inc.

Inventor： Michael Nesteroff ,  Jonathan Acker ,  Jeffrey Crutchfield ,  Nate Cooper ,  Mark Whitlock ,  Nathan Ottow

IPC: F01D11/22 ,  F04D29/42 ,  F04D29/16 ,  F01D5/04 ,  F04D17/02 ,  F04D17/10 ,  F02C3/08 ,  F04D27/02 ,  F01D11/08 ,  F04D29/62 ,  F01D11/18

Abstract: A system for controlling the clearance distance between an impeller blade tip of a centrifugal compressor and a radially inner surface of an impeller shroud in a turbine engine. The system comprises a high pressure air source, an air piston mounted between an engine casing and the shroud and adapted to receive high pressure air from the high pressure air source, a mounting arm coupling the shroud and air piston, and a slidable coupling adapted to allow axial movement of the shroud and joining the shroud to an axial member.

公开(公告)号：US20170343001A1

公开(公告)日：2017-11-30

申请号：US15165468

申请日：2016-05-26

Applicant: Rolls-Royce Corporation

Inventor： Michael Nesteroff ,  Jonathan Acker ,  Jeffrey Crutchfield ,  Nathan Ottow

IPC: F04D29/16 ,  F04D29/28 ,  F04D29/42

CPC classification number: F04D29/162 ,  F04D29/284 ,  F04D29/4206 ,  F04D29/622 ,  F05D2220/32 ,  F05D2260/50

Abstract: A system for controlling the clearance distance between an impeller blade tip of a centrifugal compressor and a radially inner surface of an impeller shroud in a turbine engine. The system comprises a high pressure air source, an air piston mounted between an engine casing and the shroud and adapted to receive high pressure air from the high pressure air source, a mounting arm coupling the shroud and air piston, and a slidable coupling adapted to allow axial movement of the shroud and joining the shroud to an axial member.