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公开(公告)号：US20180128342A1
公开(公告)日：2018-05-10
申请号：US15346202
申请日：2016-11-08
Applicant: General Electric Company
Inventor： Shuvajyoti Ghosh , Narayanan Payyoor , Surender Reddy Bhavanam , Richard Schmidt , Tod Robert Steen
CPC classification number: F16F9/535 , F01D25/04 , F01D25/164 , F05D2260/96 , F05D2300/507 , F16C19/26 , F16C27/045 , F16F15/03 , F16F15/16 , F16F15/18 , F16F2222/06 , F16F2224/045
Abstract: A controllable magneto-rheological device includes an annular cylinder formed by inner and outer walls connected at first and second opposing ends and forming an inner shaft configured to receive an operational component of an engine, generator or other device including one or more rotating structures. A magneto-rheological fluid is provided to fill a volume between the inner and outer walls of the annular cylinder. A plurality of electro-magnetic coils are positioned around the outer wall of the annular cylinder. One or more current controllers are coupled to the plurality of electro-magnetic coils for introducing a current through each of the electro-magnetic coils and corresponding magnetic flux through the magneto-rheological fluid. A level of current provided to each of the plurality of electro-magnetic coils directly affects the viscosity of the magneto-rheological fluid and thus the stiffness and damping levels of the controllable magneto-rheological device.
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公开(公告)号：US20170234157A1
公开(公告)日：2017-08-17
申请号：US15041136
申请日：2016-02-11
Applicant: General Electric Company
Inventor： Esuff Khan , Shivaram Ac , Vidyashankar Ramasastry Buravalla , Shuvajyoti Ghosh , Akash Joshi
IPC: F01D25/16
CPC classification number: F01D25/164 , F01D21/00 , F01D21/045 , F01D21/08 , F01D25/162 , F05D2220/32 , F05D2240/24 , F05D2240/242 , F05D2240/54 , F05D2240/60 , F05D2240/91 , F05D2260/15 , F05D2300/1723 , F05D2300/173 , F05D2300/174 , F05D2300/505 , Y02T50/671
Abstract: A rotor support system for a gas turbine engine may generally include a bearing assembly and a load reduction member configured to be coupled between the bearing assembly and a support frame of the engine. The load reduction member may include a fuse portion configured to fail when a load transmitted through the load reduction member exceeds a predetermined load threshold. The system may also include a load recoupling member provided between the bearing assembly and the support frame. The load recoupling member may be formed from a super-elastic shape memory alloy that allows the load recoupling member to undergo recoverable deformation without failing when the fuse portion fails such that the load recoupling member maintains a mechanical connection between the bearing assembly and the support frame.
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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
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.
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公开(公告)号：US20200025254A1
公开(公告)日：2020-01-23
申请号：US16394180
申请日：2019-04-25
Applicant: General Electric Company
Inventor： Ravindra Shankar Ganiger , Shuvajyoti Ghosh , Shivaram AC , Akash Joshi , Vidya Lokammanahalli Shivashankar
IPC: F16C39/02 , F02K3/06 , F16C35/073 , F16C25/08 , F16C19/22 , F01D25/16 , F04D29/32 , F04D29/66 , F16C19/06 , F01D21/04
Abstract: A method of reducing loads in a rotor assembly during an imbalance condition, a shape memory alloy recoupler device, and a hybrid bearing support system are provided. The hybrid bearing support system includes a shaft extension fixedly coupled to a rotatable member at a radially inner end of the shaft extension, a radially outer end of said shaft extension fixedly coupled to a rotatable race of a bearing supporting the rotatable member, and a recoupler device formed of a shape memory alloy (SMA) material coupled in parallel with at least a portion of said shaft extension between the radially inner end and the radially outer end.
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Patent Agency Ranking
公开(公告)号：US20190153896A1
公开(公告)日：2019-05-23
申请号：US16185184
申请日：2018-11-09
Applicant: General Electric Company
Inventor： Ravindra Shankar Ganiger , Satish Kumar Yadav , Shuvajyoti Ghosh
IPC: F01D25/16 , F16F15/023
CPC classification number: F01D25/164 , F01D5/10 , F01D25/06 , F16C19/02 , F16C19/22 , F16C27/045 , F16C2360/23 , F16F15/0237
Abstract: Squeeze film damping systems and methods therefore are provided that include features for optimizing the damping response to vibrational loads experienced by a rotary component of a gas turbine engine. In one exemplary aspect, a damping system actively controls a dynamic sleeve to adjust the damping response. In particular, the dynamic sleeve is disposed within a chamber defined by a damper housing. The damping system controls the damper gap by translating the dynamic sleeve. When the dynamic sleeve is translated, a variable damper gap is varied, allowing for fluid to squeeze into or out of the damper gap, thereby adjusting the damping response to the vibration of the rotary component.
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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.
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公开(公告)号：US10196934B2
公开(公告)日：2019-02-05
申请号：US15041136
申请日：2016-02-11
Applicant: General Electric Company
Inventor： Esuff Khan , Shivaram Ac , Vidyashankar Ramasastry Buravalla , Shuvajyoti Ghosh , Akash Joshi
Abstract: A rotor support system for a gas turbine engine may generally include a bearing assembly and a load reduction member configured to be coupled between the bearing assembly and a support frame of the engine. The load reduction member may include a fuse portion configured to fail when a load transmitted through the load reduction member exceeds a predetermined load threshold. The system may also include a load recoupling member provided between the bearing assembly and the support frame. The load recoupling member may be formed from a super-elastic shape memory alloy that allows the load recoupling member to undergo recoverable deformation without failing when the fuse portion fails such that the load recoupling member maintains a mechanical connection between the bearing assembly and the support frame.
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公开(公告)号：US10156159B1
公开(公告)日：2018-12-18
申请号：US15682694
申请日：2017-08-22
Applicant: General Electric Company
Inventor： Ravindra Shankar Ganiger , Satish Kumar Yadav , Shuvajyoti Ghosh
IPC: F16C27/04 , F01D25/16 , F16F15/023 , F01D25/06 , F01D5/10
Abstract: Squeeze film damping systems and methods therefore are provided that include features for optimizing the damping response to vibrational loads experienced by a rotary component of a gas turbine engine. In one exemplary aspect, a damping system actively controls a dynamic sleeve to adjust the damping response. In particular, the dynamic sleeve is disposed within a chamber defined by a damper housing. The damping system controls the damper gap by translating the dynamic sleeve. When the dynamic sleeve is translated, a variable damper gap is varied, allowing for fluid to squeeze into or out of the damper gap, thereby adjusting the damping response to the vibration of the rotary component.
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公开(公告)号：US20180320553A1
公开(公告)日：2018-11-08
申请号：US15970203
申请日：2018-05-03
Applicant: General Electric Company
Inventor： Narayanan Payyoor , Satish K. Yadav , Shuvajyoti Ghosh , Ravindra Shankar Ganiger
CPC classification number: F01D25/164 , F02C7/06 , F05D2240/50 , F05D2260/96 , F16C27/045 , F16C35/077 , F16C2326/43 , F16C2360/23
Abstract: A damper assembly includes a bearing assembly including a bearing outer race. A damper inner race is spaced from the bearing outer race and includes a plurality of circumferentially-spaced first openings. The damper assembly also includes a damper outer race spaced from damper inner race and a plurality of damper segments extending between the damper inner race and the damper outer race. Each damper segment includes a plurality of second openings.
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