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公开(公告)号：US20210039799A1
公开(公告)日：2021-02-11
申请号：US16535315
申请日：2019-08-08
发明人： Praveen Sharma , Vinod Shashikant Chaudhari , Sivakumar Mahesh , Bhujabal Prashant Mahadeo , Mohan Kannaiah Raju , Ravindra Shankar Ganiger , Jagadisha Pai Nagarmat , Shivam Mittal
摘要： A vibration isolation system for a gas turbine engine. The vibration isolation system includes a first fixed structure and a second fixed structure separate from the first fixed structure. The vibration isolation system further includes a connector coupling the first fixed structure to the second fixed structure. Additionally, the vibration isolation system includes an isolator, including a shape memory alloy material, associated with the connector. The isolator is arranged between the first fixed structure and the second fixed structure such that the isolator reduces vibrations transferred between the first fixed structure and the second fixed structure.
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公开(公告)号：US20190203646A1
公开(公告)日：2019-07-04
申请号：US15861780
申请日：2018-01-04
发明人： Andrew Bryan Cannella , Charles Stanley Orkiszewski , Milind Chandrakant Dhabade , Praveen Sharma , Brian Drummond , Shivam Mittal
摘要： The present disclosure is directed to a gas turbine engine structure and method for reducing or mitigating bowed rotor. The method includes coupling a rotor assembly to a mechanical energy storage device via a clutch mechanism when the rotor assembly is at or below a speed limit below an idle speed condition; storing mechanical energy at the mechanical energy storage device via rotation of the rotor assembly at or below the speed limit; releasing mechanical energy from the mechanical energy storage device to rotate the rotor assembly following shutdown of the gas turbine engine; and rotating the rotor assembly via the mechanical energy from the mechanical energy storage device.
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公开(公告)号：US20230012799A1
公开(公告)日：2023-01-19
申请号：US17490436
申请日：2021-09-30
发明人： Eduardo Aguilar Armendariz , Pamela M. Boehm , Kanahayya Dudhale , Shivam Mittal , William J. Simpson
摘要： A system and method for reducing the vibration response of a rotating system are provided. In one aspect, an optimized balance shot or solution that indicates one or more physical locations at which one or more balancing weights are to be added or removed from the rotating system is generated. The balance shot is generated based on a transfer function that is customized specifically for the rotating system. The transfer function is generated by applying one or more machine-learned models to parameter values for parameters that are associated with the rotating system. The machine-learned models can generate main effects plots, and from the plots, an effective set of parameter values can be determined. The transfer function can be generated using the effective set of parameter values so that the transfer function used to generate the balance shot is optimized specifically for the rotating system undergoing the balancing process.
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公开(公告)号：US20220098999A1
公开(公告)日：2022-03-31
申请号：US17387002
申请日：2021-07-28
发明人： Ravindra Shankar Ganiger , Praveen Sharma , Shivam Mittal , Bhujabal Prashant Mahadeo , Weize Kang , Richard Schmidt
IPC分类号： F01D25/16 , F02C7/36 , F01D25/18 , F02C7/06 , F16C27/04 , F16C35/077 , F16C19/26 , F16C19/06 , F03G7/06
摘要： A casing for a bearing of a gas turbine engine includes a shaft extending along an axial direction. The casing includes an attachment feature at a radially outermost portion of the casing. The attachment feature is configured to be coupled to a static frame of the gas turbine engine. The casing further includes a plurality of support arms extend from the attachment feature to a radially innermost portion of the casing. At least one support arm of the plurality of support arms defines an internal cavity. Further, the radially innermost portion of the casing is configured to be coupled to an outer race of the bearing. The casing additionally includes a reinforcing member housed at least partially within the internal cavity of at least one support arm. Moreover, the reinforcing member includes a shape memory alloy material.
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公开(公告)号：US20190162077A1
公开(公告)日：2019-05-30
申请号：US15823631
申请日：2017-11-28
发明人： Shuvajyoti Ghosh , Ravindra Shankar Ganiger , Praveen Sharma , Ishita Sehgal , Prashant Bhujabal , Shivam Mittal
IPC分类号： F01D25/16
摘要： A support system for a gas turbine engine is provided. The support system includes a load-bearing unit that includes a first flange, a support element supporting the load-bearing unit and having a second flange, a fastener connecting the first flange and the second flange, a first super-elastic shape memory alloy component in contact with the first flange, and a second super-elastic shape memory alloy component in contact with the second flange. The first and the second super-elastic shape memory alloy components are configured to deform when a load exerted by the fastener exceeds a threshold load value of the fastener.
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公开(公告)号：US11105223B2
公开(公告)日：2021-08-31
申请号：US16535254
申请日：2019-08-08
发明人： Ravindra Shankar Ganiger , Praveen Sharma , Shivam Mittal , Bhujabal Prashant Mahadeo , Weize Kang , Richard Schmidt
IPC分类号： F01D25/16 , F02C7/36 , F01D25/18 , F03G7/06 , F02C7/06 , F16C27/04 , F16C35/077 , F16C19/26 , F16C19/06
摘要： A casing for a bearing of a gas turbine engine includes a shaft extending along an axial direction. The casing includes an attachment feature at a radially outermost portion of the casing. The attachment feature is configured to be coupled to a static frame of the gas turbine engine. The casing further includes a plurality of support arms extend from the attachment feature to a radially innermost portion of the casing. At least one support arm of the plurality of support arms defines an internal cavity. Further, the radially innermost portion of the casing is configured to be coupled to an outer race of the bearing. The casing additionally includes a reinforcing member housed at least partially within the internal cavity of at least one support arm. Moreover, the reinforcing member includes a shape memory alloy material.
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公开(公告)号：US20210040865A1
公开(公告)日：2021-02-11
申请号：US16535254
申请日：2019-08-08
发明人： Ravindra Shankar Ganiger , Praveen Sharma , Shivam Mittal , Bhujabal Prashant Mahadeo , Weize Kang , Richard Schmidt
摘要： A casing for a bearing of a gas turbine engine includes a shaft extending along an axial direction. The casing includes an attachment feature at a radially outermost portion of the casing. The attachment feature is configured to be coupled to a static frame of the gas turbine engine. The casing further includes a plurality of support arms extend from the attachment feature to a radially innermost portion of the casing. At least one support arm of the plurality of support arms defines an internal cavity. Further, the radially innermost portion of the casing is configured to be coupled to an outer race of the bearing. The casing additionally includes a reinforcing member housed at least partially within the internal cavity of at least one support arm. Moreover, the reinforcing member includes a shape memory alloy material.
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公开(公告)号：US20210040864A1
公开(公告)日：2021-02-11
申请号：US16535231
申请日：2019-08-08
摘要： A support assembly for a bearing of a gas turbine engine includes a shaft extending along an axial direction. The support assembly includes an outer race positioned radially exterior to the bearing such that the outer race supports the bearing. Additionally, the support assembly includes a shape memory alloy damper positioned radially exterior to the outer race and at least partially supporting the outer race. Moreover, the shape memory alloy damper includes a plurality of sleeves. One or more sleeves of the plurality of sleeves include a shape memory alloy material.
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公开(公告)号：US10760498B2
公开(公告)日：2020-09-01
申请号：US15861780
申请日：2018-01-04
发明人： Andrew Bryan Cannella , Charles Stanley Orkiszewski , Milind Chandrakant Dhabade , Praveen Sharma , Brian Drummond , Shivam Mittal
摘要： The present disclosure is directed to a gas turbine engine structure and method for reducing or mitigating bowed rotor. The method includes coupling a rotor assembly to a mechanical energy storage device via a clutch mechanism when the rotor assembly is at or below a speed limit below an idle speed condition; storing mechanical energy at the mechanical energy storage device via rotation of the rotor assembly at or below the speed limit; releasing mechanical energy from the mechanical energy storage device to rotate the rotor assembly following shutdown of the gas turbine engine; and rotating the rotor assembly via the mechanical energy from the mechanical energy storage device.
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公开(公告)号：US11852027B2
公开(公告)日：2023-12-26
申请号：US17329220
申请日：2021-05-25
CPC分类号： F01D25/164 , F01D25/005 , F16C35/06 , F05D2220/32 , F05D2240/50 , F05D2260/96 , F05D2300/17 , F05D2300/505 , F16C2360/23
摘要： A support assembly for a bearing of a gas turbine engine includes a shaft extending along an axial direction. The support assembly includes an outer race positioned radially exterior to the bearing such that the outer race supports the bearing. Additionally, the support assembly includes a shape memory alloy damper positioned radially exterior to the outer race and at least partially supporting the outer race. Moreover, the shape memory alloy damper includes a plurality of sleeves. One or more sleeves of the plurality of sleeves include a shape memory alloy material.
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