公开(公告)号：US20220397038A1

公开(公告)日：2022-12-15

申请号：US17343454

申请日：2021-06-09

Applicant: General Electric Company

Inventor： Ravindra Shankar Ganiger ,  Praveen Sharma ,  Jeffrey D. Carnes ,  Herbert Chidsey Roberts

IPC: F01D11/12

Abstract: Methods, apparatus, systems and articles of manufacture are disclosed. A shroud assembly of a gas turbine engine includes: a first shroud arm having a first end and a second end, the first end to couple to an outer wall and the second end to couple to a first shroud pad, and a second shroud arm having a first end and a second end, the first end to couple to the outer wall and the second end to couple to a second shroud pad, at least one of the first shroud pad or the second shroud pad to move radially outward toward the outer wall in response to a rotor blade contacting the at least one of the first shroud pad or the second shroud pad.

公开(公告)号：US11499448B2

公开(公告)日：2022-11-15

申请号：US16424843

申请日：2019-05-29

Applicant: General Electric Company

Inventor： Abhijeet Jayshingrao Yadav ,  Nagamohan Govinahalli Prabhakar ,  Nicholas Joseph Kray ,  Shivam Mittal ,  Praveen Sharma ,  Bhujabal Prashant Mahadeo ,  Ravindra Shankar Ganiger

IPC: F01D25/24 ,  F01D25/00 ,  F02K3/06 ,  F03G7/06

Abstract: A composite fan casing for a gas turbine engine defining a central axis is generally provided. The composite fan casing includes a core having a plurality of core layers of reinforcing fibers bonded together with a thermosetting polymeric resin and having an outer surface. The composite fan casing further includes at least one stiffener integrally coupled to an aft portion of the outer surface of the core relative to the central axis. Additionally, the at least one stiffener comprises an elastic material.

公开(公告)号：US20220282755A1

公开(公告)日：2022-09-08

申请号：US17192116

申请日：2021-03-04

Applicant: General Electric Company

Inventor： Ravindra Shankar Ganiger ,  Thomas D. Woodrow ,  Weize Kang ,  Praveen Sharma ,  Ambika Shivamurthy

IPC: F16C19/00 ,  F02C7/06 ,  F03D80/70 ,  F03D13/20

Abstract: A bearing system is provided, configured to surround a rotor along a circumferential direction corresponding to the rotor. The rotor is extended along an axial direction co-directional to a centerline axis of the rotor. The bearing system includes a body from which a plurality of first support members is each extended, and wherein the plurality of first support members is spaced apart from one another along the circumferential direction. Each first support member includes a first axial support arm extended along the axial direction and a first radial support arm extended from the first axial support arm along a radial direction. The first radial support arm is configured to position a bearing element in contact with a bearing surface at the rotor.

公开(公告)号：US20220154580A1

公开(公告)日：2022-05-19

申请号：US16950940

申请日：2020-11-18

Applicant: General Electric Company

Inventor： Ravindra Shankar Ganiger ,  Praveen Sharma ,  Naleen Kumar Verma ,  Nicholas Joseph Kray

IPC: F01D5/10 ,  F01D25/16

Abstract: A variable stiffness damper system including an inner spring positioned between a first wall and a second wall, in which the inner spring includes a first member and a second member each coupled together at a distal end by an inner bumper. The first member and the second member are each contoured toward one another. The first member, the second member, and the inner bumper form a cavity therebetween. An outer spring is positioned between the inner spring and the first wall or the second wall. The outer spring includes a spring arm contoured toward the inner spring. The outer spring includes an outer bumper positioned between the inner bumper and the first wall or the second wall. The inner bumper and the outer bumper are selectively couplable to one another based on a load applied to the damper system.

公开(公告)号：US20210388739A1

公开(公告)日：2021-12-16

申请号：US16902480

申请日：2020-06-16

Applicant: General Electric Company

Inventor： Arvind Namadevan ,  Arnab Sen ,  Wendy Wenling Lin ,  Shivam Mittal ,  Peeyush Pankaj ,  Shashank Suresh Puranik ,  Narayanan Payyoor ,  Praveen Sharma

IPC: F01D25/24

Abstract: A composite fan casing for a gas turbine engine defining a central axis is generally provided. The composite fan casing includes a core having a plurality of core layers of reinforcing fibers bonded together with a thermosetting polymeric resin, wherein one or more of the plurality of core layers of reinforcing fibers comprises a shear thickening fluid. The core layer may include at least one fabric sheet comprising the reinforcing fibers.

公开(公告)号：US11162428B2

公开(公告)日：2021-11-02

申请号：US15845082

申请日：2017-12-18

Applicant: General Electric Company

Inventor： Praveen Sharma ,  Shuvajyoti Ghosh ,  Narayanan Payyoor ,  Tod Robert Steen ,  Carl Lawrence MacMahon

IPC: F02C7/26 ,  F02C7/06 ,  F01D25/34

Abstract: A method of starting a gas turbine engine is generally provided. The engine includes a rotor assembly including a compressor rotor and a turbine rotor each coupled to a shaft. The rotor assembly is coupled to a bearing assembly within a casing enabling rotation of the rotor assembly. The method includes determining, based on a lubricant parameter, a period of time within which a rotational speed of the rotor assembly is maintained within a bowed rotor mitigation speed range; rotating the rotor assembly for the period of time within the bowed rotor mitigation speed range; and accelerating the rotor assembly to the combustion speed to ignite a fuel-oxidizer mixture for combustion.

公开(公告)号：US20190145277A1

公开(公告)日：2019-05-16

申请号：US15811169

申请日：2017-11-13

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Shuvajyoti Ghosh ,  Ravindra Shankar Ganiger ,  Praveen Sharma ,  Ishita Sehgal ,  Prashant Bhujabal ,  Shivam Mittal

IPC: F01D25/16 ,  F16C19/06 ,  F16C35/063

Abstract: A rotor support system for a gas turbine engine is disclosed. The rotor support system includes a bearing support flange, a frame support flange proximate to the bearing support flange, a fastener between the bearing support flange and the frame support flange, a damping component, and an axial retainer. The damping component includes a super-elastic shape memory alloy. The fastener is configured to fail when a load on the fastener exceeds a threshold value and the damping component is configured to deform from a normal state to a deformed state after the fastener fails. The axial retainer is configured to retain the bearing support flange and the frame support flange within an axial displacement from each other after the fastener fails. A radial gap exists between the bearing support flange and the frame support flange when the damping component is in the normal state.