Patents by Inventor Michael Nesteroff
Michael Nesteroff has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20230374936Abstract: A gas turbine engine includes a fan, a compressor, a combustor, and a turbine. The compressor compresses gases entering the gas turbine engine. The combustor receives the compressed gases from the compressor and mixes fuel with the compressed gases. The turbine receives the hot, high pressure combustion products created by the combustor by igniting the fuel mixed with the compressed gases. The turbine extracts mechanical work from the hot, high pressure combustion products to drive the fan and compressor.Type: ApplicationFiled: July 21, 2023Publication date: November 23, 2023Inventors: Mark E. Whitlock, Nathanael Cooper, Steven Mazur, Michael Nesteroff, Paul Melevage
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Patent number: 11746695Abstract: A gas turbine engine includes a fan, a compressor, a combustor, and a turbine. The compressor compresses gases entering the gas turbine engine. The combustor receives the compressed gases from the compressor and mixes fuel with the compressed gases. The turbine receives the hot, high pressure combustion products created by the combustor by igniting the fuel mixed with the compressed gases. The turbine extracts mechanical work from the hot, high pressure combustion products to drive the fan and compressor.Type: GrantFiled: May 18, 2022Date of Patent: September 5, 2023Assignee: Rolls-Royce CorporationInventors: Mark E. Whitlock, Nathanael Cooper, Steven Mazur, Michael Nesteroff, Paul Melevage
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Patent number: 11525393Abstract: A gas turbine engine includes a fan, a compressor, a combustor, and a turbine. The compressor compresses gases entering the gas turbine engine. The combustor receives the compressed gases from the compressor and mixes fuel with the compressed gases. The turbine receives the hot, high pressure combustion products created by the combustor by igniting the fuel mixed with the compressed gases. The turbine extracts mechanical work from the hot, high pressure combustion products to drive the fan and compressor.Type: GrantFiled: March 19, 2020Date of Patent: December 13, 2022Assignee: Rolls-Royce CorporationInventors: Mark E. Whitlock, Nathanael Cooper, Steven Mazur, Michael Nesteroff, Paul Melevage
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Publication number: 20220333525Abstract: A gas turbine engine includes a fan, a compressor, a combustor, and a turbine. The compressor compresses gases entering the gas turbine engine. The combustor receives the compressed gases from the compressor and mixes fuel with the compressed gases. The turbine receives the hot, high pressure combustion products created by the combustor by igniting the fuel mixed with the compressed gases. The turbine extracts mechanical work from the hot, high pressure combustion products to drive the fan and compressor.Type: ApplicationFiled: May 18, 2022Publication date: October 20, 2022Inventors: Mark E. Whitlock, Nathanael Cooper, Steven Mazur, Michael Nesteroff, Paul Melevage
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Patent number: 11426794Abstract: A composite component may include a substrate including a first material and defining a surface; and at least one feature attached to the surface of the substrate. The at least one feature may include a second, different material attached to the surface using cold spraying. Cold spraying may include accelerating particles of the second material toward the surface without melting the particles.Type: GrantFiled: October 7, 2019Date of Patent: August 30, 2022Assignees: ROLLS-ROYCE CORPORATION, ROLLS-ROYCE NORTH AMERICAN TECHNOLOGIES, INC.Inventors: Michael Nesteroff, Matthew R. Gold
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Publication number: 20210293180Abstract: A gas turbine engine includes a fan, a compressor, a combustor, and a turbine. The compressor compresses gases entering the gas turbine engine. The combustor receives the compressed gases from the compressor and mixes fuel with the compressed gases. The turbine receives the hot, high pressure combustion products created by the combustor by igniting the fuel mixed with the compressed gases. The turbine extracts mechanical work from the hot, high pressure combustion products to drive the fan and compressor.Type: ApplicationFiled: March 19, 2020Publication date: September 23, 2021Inventors: Mark E. Whitlock, Nathanael Cooper, Steven Mazur, Michael Nesteroff, Paul Melevage
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Patent number: 11105338Abstract: 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.Type: GrantFiled: September 23, 2019Date of Patent: August 31, 2021Assignees: Rolls-Royce Corporation, Rolls-Royce North American Technologies Inc.Inventors: Michael Nesteroff, Jonathan Acker, Jeffrey Crutchfield, Nate Cooper, Mark Whitlock, Nathan Ottow
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Patent number: 11002284Abstract: 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.Type: GrantFiled: June 6, 2019Date of Patent: May 11, 2021Assignee: Rolls-Royce CorporationInventors: Michael Nesteroff, Jonathan Acker, Nate Cooper, Nathan Ottow
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Patent number: 10962024Abstract: A compressor shroud assembly is disclosed comprising a dynamically moveable impeller shroud, a static compressor casing, an air piston mounted between said impeller shroud and said compressor casing, and a clearance control system. The air piston effects axial movement of said impeller shroud responsive to a supply of actuating air. The clearance control system regulates the pressure of actuating air in said air piston and comprises a supply conduit having a supply modulating valve and a discharge conduit having a blowoff check valve. The blowoff check valve is set to open at a predetermined differential pressure between pressure of the air piston and pressure of the supply of actuating air.Type: GrantFiled: June 26, 2019Date of Patent: March 30, 2021Assignee: Rolls-Royce CorporationInventors: Michael Nesteroff, Mark Eric Whitlock, Nathanael Cooper
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Publication number: 20210062824Abstract: 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.Type: ApplicationFiled: September 23, 2019Publication date: March 4, 2021Applicants: Rolls-Royce Corporation, Rolls-Royce North American Technologies Inc.Inventors: Michael Nesteroff, Jonathan Acker, Jeffrey Crutchfield, Nate Cooper, Mark Whitlock, Nathan Ottow
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Patent number: 10935044Abstract: A system for controlling the clearance distance between an impeller blade tip of a centrifugal compressor and a radially inner surface of a segregated impeller shroud in a turbine engine. The system comprises a driving mechanism coupled to a portion of a segregated impeller shroud. The driving mechanism comprises a driving arm and threaded axial member configured to translate motion of an actuator ring into axially forward and aft motion of the portion of the segregated impeller shroud.Type: GrantFiled: August 1, 2019Date of Patent: March 2, 2021Assignee: Rolls-Royce CorporationInventors: Nathan Ottow, Johnathan Acker, Nate Cooper, Mark Whitlock, Michael Nesteroff
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Publication number: 20200408224Abstract: A compressor shroud assembly is disclosed comprising a dynamically moveable impeller shroud, a static compressor casing, an air piston mounted between said impeller shroud and said compressor casing, and a clearance control system. The air piston effects axial movement of said impeller shroud responsive to a supply of actuating air. The clearance control system regulates the pressure of actuating air in said air piston and comprises a supply conduit having a supply modulating valve and a discharge conduit having a blowoff check valve. The blowoff check valve is set to open at a predetermined differential pressure between pressure of the air piston and pressure of the supply of actuating air.Type: ApplicationFiled: June 26, 2019Publication date: December 31, 2020Applicant: Rolls-Royce CorporationInventors: Michael Nesteroff, Mark Eric Whitlock, Nathanael Cooper
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Patent number: 10731660Abstract: 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.Type: GrantFiled: August 17, 2018Date of Patent: August 4, 2020Assignee: Rolls-Royce CorporationInventors: Michael Nesteroff, Jonathan Acker, Albert Moncada, David Templin
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Patent number: 10704560Abstract: A centrifugal impeller shroud assembly has a dynamically moveable impeller shroud for encasing a rotatable centrifugal impeller and resolving misalignment between the impeller shroud and the rotatable centrifugal impeller. The assembly comprises a static casing, an impeller shroud, a shroud arm, and a thermal member. The shroud arm is coupled between the casing and the impeller shroud. The thermal member is coupled to the impeller shroud and has a coefficient of thermal expansion (CTE) lower than the CTE of the shroud. The shroud arm comprises a flexible portion configured to flex responsive to a differential pressure across the shroud arm.Type: GrantFiled: June 13, 2018Date of Patent: July 7, 2020Assignee: Rolls-Royce CorporationInventors: Grace Aker, Michael Nesteroff, Mark Eric Whitlock, Cassandra Cummings, Jonathan Acker, Younes Khamliche, Nathanael Cooper
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Publication number: 20200109645Abstract: A composite component may include a substrate including a first material and defining a surface; and at least one feature attached to the surface of the substrate. The at least one feature may include a second, different material attached to the surface using cold spraying. Cold spraying may include accelerating particles of the second material toward the surface without melting the particles.Type: ApplicationFiled: October 7, 2019Publication date: April 9, 2020Inventors: Michael Nesteroff, Matthew R. Gold
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Publication number: 20200056625Abstract: 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.Type: ApplicationFiled: August 17, 2018Publication date: February 20, 2020Applicant: Rolls-Royce CorporationInventors: Michael Nesteroff, Jonathan Acker, Albert Moncada, David Templin
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Publication number: 20190383304Abstract: A centrifugal impeller shroud assembly has a dynamically moveable impeller shroud for encasing a rotatable centrifugal impeller and resolving misalignment between the impeller shroud and the rotatable centrifugal impeller. The assembly comprises a static casing, an impeller shroud, a shroud arm, and a thermal member. The shroud arm is coupled between the casing and the impeller shroud. The thermal member is coupled to the impeller shroud and has a coefficient of thermal expansion (CTE) lower than the CTE of the shroud. The shroud arm comprises a flexible portion configured to flex responsive to a differential pressure across the shroud arm.Type: ApplicationFiled: June 13, 2018Publication date: December 19, 2019Applicant: Rolls-Royce CorporationInventors: Grace Aker, Michael Nesteroff, Mark Eric Whitlock, Cassandra Cummings, Jonathan Acker, Younes Khamliche, Nathanael Cooper
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Publication number: 20190353180Abstract: A system for controlling the clearance distance between an impeller blade tip of a centrifugal compressor and a radially inner surface of a segregated impeller shroud in a turbine engine. The system comprises a driving mechanism coupled to a portion of a segregated impeller shroud. The driving mechanism comprises a driving arm and threaded axial member configured to translate motion of an actuator ring into axially forward and aft motion of the portion of the segregated impeller shroud.Type: ApplicationFiled: August 1, 2019Publication date: November 21, 2019Applicant: Rolls-Royce CorporationInventors: Nathan Ottow, Johnathan Acker, Nate Cooper, Mark Whitlock, Michael Nesteroff
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Patent number: 10458429Abstract: 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.Type: GrantFiled: August 11, 2016Date of Patent: October 29, 2019Assignees: ROLLS-ROYCE CORPORATION, ROLLS-ROYCE NORTH AMERICAN TECHNOLOGIES INC.Inventors: Michael Nesteroff, Jonathan Acker, Jeffrey Crutchfield, Nate Cooper, Mark Whitlock, Nathan Ottow
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Publication number: 20190323514Abstract: 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.Type: ApplicationFiled: June 6, 2019Publication date: October 24, 2019Applicant: Rolls-Royce CorporationInventors: Michael Nesteroff, Jonathan Acker, Nate Cooper, Nathan Ottow