Patents by Inventor John Thomas Herbon
John Thomas Herbon 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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Patent number: 11661859Abstract: A system and method for determining performance of an engine is provided. The system includes two or more sensors configured in operable arrangement at two or more respective positions at a flowpath. The system includes one or more computing devices configured to perform operations, the operations include acquiring, via the two or more sensors, parameter sets each corresponding to two or more engine conditions different from one another, wherein each parameter set indicates a health condition at a respective location at the engine; comparing, via the computing device, the parameter sets to determine the respective health condition corresponding to the respective location at the engine; and generating, via the computing device, a health condition prediction based on the compared parameter sets.Type: GrantFiled: October 30, 2020Date of Patent: May 30, 2023Assignee: General Electric CompanyInventors: Sridhar Adibhatla, John Thomas Herbon
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Patent number: 11578869Abstract: A combustor for a turbine engine is provided, the combustor includes an outer liner, an inner liner and a dome that together define a combustion chamber; a diffuser positioned upstream of the combustion chamber, the diffuser being configured to receive air flow from a compressor section and to provide a flow of compressed air to the combustion chamber; and an outer cowl and an inner cowl located upstream of the combustion chamber, the outer cowl and the inner cowl being configured to direct a portion of air flow from the diffuser to the combustion chamber. The diffuser is configured to output air flow having an amount of air pressure maximized at a center of the air flow so as to optimize total air pressure fed to the combustion chamber through the dome.Type: GrantFiled: May 20, 2021Date of Patent: February 14, 2023Assignee: GENERAL ELECTRIC COMPANYInventors: Joseph Zelina, Clayton S. Cooper, Michael T. Bucaro, Steven C. Vise, John Thomas Herbon
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Publication number: 20220373181Abstract: A combustor for a turbine engine is provided, the combustor includes an outer liner, an inner liner and a dome that together define a combustion chamber; a diffuser positioned upstream of the combustion chamber, the diffuser being configured to receive air flow from a compressor section and to provide a flow of compressed air to the combustion chamber; and an outer cowl and an inner cowl located upstream of the combustion chamber, the outer cowl and the inner cowl being configured to direct a portion of air flow from the diffuser to the combustion chamber. The diffuser is configured to output air flow having an amount of air pressure maximized at a center of the air flow so as to optimize total air pressure fed to the combustion chamber through the dome.Type: ApplicationFiled: May 20, 2021Publication date: November 24, 2022Inventors: Joseph Zelina, Clayton S. Cooper, Michael T. Bucaro, Steven C. Vise, John Thomas Herbon
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Publication number: 20210062675Abstract: A system and method for determining performance of an engine is provided. The system includes two or more sensors configured in operable arrangement at two or more respective positions at a flowpath. The system includes one or more computing devices configured to perform operations, the operations include acquiring, via the two or more sensors, parameter sets each corresponding to two or more engine conditions different from one another, wherein each parameter set indicates a health condition at a respective location at the engine; comparing, via the computing device, the parameter sets to determine the respective health condition corresponding to the respective location at the engine; and generating, via the computing device, a health condition prediction based on the compared parameter sets.Type: ApplicationFiled: October 30, 2020Publication date: March 4, 2021Inventors: Sridhar Adibhatla, John Thomas Herbon
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Patent number: 10822993Abstract: A system and method for determining performance of a turbine engine, and operation thereof. The system and method includes a plurality of sensors and one or more computing devices executing operations including acquiring a plurality of parameter sets each corresponding to a plurality of engine conditions in which each parameter set corresponding to each engine condition indicates a health condition at a plurality of locations at the engine; comparing the plurality of parameter sets to determine a health condition corresponding to a location at the engine; and generating a health condition prediction at the engine based on the compared parameters.Type: GrantFiled: June 6, 2018Date of Patent: November 3, 2020Assignee: General Electric CompanyInventors: Sridhar Adibhatla, John Thomas Herbon
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Publication number: 20190376408Abstract: A system and method for determining performance of a turbine engine, and operation thereof. The system and method includes a plurality of sensors and one or more computing devices executing operations including acquiring a plurality of parameter sets each corresponding to a plurality of engine conditions in which each parameter set corresponding to each engine condition indicates a health condition at a plurality of locations at the engine; comparing the plurality of parameter sets to determine a health condition corresponding to a location at the engine; and generating a health condition prediction at the engine based on the compared parameters.Type: ApplicationFiled: June 6, 2018Publication date: December 12, 2019Inventors: Sridhar Adibhatla, John Thomas Herbon
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Patent number: 10197275Abstract: An acoustic damping device is provided that includes a resonating tube defining a resonating cavity with a predetermined characteristic length and a tube end defining a cavity opening, as well as a case configured to reversibly secure the tube end in fluidic communication with a fluid volume enclosed by a liner. The cavity opening is connected with the resonating cavity. The case includes a vented ferrule adpressed over a perforated region of the liner. The vented ferrule defines a ferrule opening that is aligned with the perforated region of the liner and the cavity opening to form the fluidic communication between the fluid volume and the resonating cavity.Type: GrantFiled: May 3, 2016Date of Patent: February 5, 2019Assignee: General Electric CompanyInventors: Kwanwoo Kim, Changjin Yoon, John Thomas Herbon
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Publication number: 20170321895Abstract: An acoustic damping device is provided that includes a resonating tube defining a resonating cavity with a predetermined characteristic length and a tube end defining a cavity opening, as well as a case configured to reversibly secure the tube end in fluidic communication with a fluid volume enclosed by a liner. The cavity opening is connected with the resonating cavity. The case includes a vented ferrule adpressed over a perforated region of the liner. The vented ferrule defines a ferrule opening that is aligned with the perforated region of the liner and the cavity opening to form the fluidic communication between the fluid volume and the resonating cavity.Type: ApplicationFiled: May 3, 2016Publication date: November 9, 2017Inventors: Kwanwoo Kim, Changjin Yoon, John Thomas Herbon
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Patent number: 9366189Abstract: In one embodiment, a system for reducing pressure oscillations within a gas turbine engine includes at least one fuel injector configured to inject fuel into a combustor. The system also includes a valve fluidly coupled to the at least one fuel injector. The system further includes a controller communicatively coupled to the valve. The controller is configured to cycle the valve between an open position and a closed position at a first frequency and a first duty cycle while a magnitude of pressure oscillations within the combustor is less than a threshold value, to cycle the valve between the open position and the closed position at a second frequency and a second duty cycle while the magnitude of the pressure oscillations within the combustor is greater than or equal to the threshold value, and to adjust the second frequency based on a measured frequency of the pressure oscillations.Type: GrantFiled: June 29, 2012Date of Patent: June 14, 2016Assignee: General Electric CompanyInventors: Zekai Hong, Joel Meier Haynes, Keith Robert McManus, John Thomas Herbon
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Patent number: 8847631Abstract: A gate drive circuit includes an insulated gate semiconductor switch. A controlled current source is connected to the semiconductor switch gate terminal to provide a gate drive circuit that is responsive to recycled gate charge corresponding to an internal gate capacitance of the insulated gate semiconductor switch.Type: GrantFiled: December 23, 2011Date of Patent: September 30, 2014Assignee: General Electric CompanyInventors: Fengfeng Tao, Seyed Gholamali Saddoughi, John Thomas Herbon
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Patent number: 8671659Abstract: A system and a method of generating energy in a power plant using a turbine are provided. The system includes an air separation unit providing an oxygen output; a plasma generator that is capable of generating plasma; and a combustor configured to receive oxygen and to combust a fuel stream in the presence of the plasma, so as to maintain a stable flame, generating an exhaust gas. The system can further include a water condensation system, fluidly-coupled to the combustor, that is capable of producing a high-content carbon dioxide stream that is substantially free of oxygen. The method of generating energy in a power plant includes the steps of operating an air separation unit to separate oxygen from air, combusting a fuel stream in a combustor in the presence of oxygen, and generating an exhaust gas from the combustion. The exhaust gas can be used in a turbine to generate electricity. A plasma is generated inside the combustor, and a stable flame is maintained in the combustor.Type: GrantFiled: April 29, 2011Date of Patent: March 18, 2014Assignee: General Electric CompanyInventors: Ahmed Mostafa ELKady, Uyigue Omoma Idahosa, Matthew Patrick Boespflug, Grover Andrew Bennett, John Thomas Herbon, Hasan Karim, Geoffrey David Myers, Seyed Gholamali Saddoughi
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Patent number: 8649188Abstract: A power generator includes one or more full bridge inverter modules coupled to a semiconductor opening switch (SOS) through an inductive resonant branch. Each module includes a plurality of switches that are switched in a fashion causing the one or more full bridge inverter modules to drive the semiconductor opening switch SOS through the resonant circuit to generate pulses to a load connected in parallel with the SOS.Type: GrantFiled: October 31, 2011Date of Patent: February 11, 2014Assignee: General Electric CompanyInventors: Fengfeng Tao, Seyed Gholamali Saddoughi, John Thomas Herbon
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Publication number: 20140007584Abstract: In one embodiment, a system for reducing pressure oscillations within a gas turbine engine includes at least one fuel injector configured to inject fuel into a combustor. The system also includes a valve fluidly coupled to the at least one fuel injector. The system further includes a controller communicatively coupled to the valve. The controller is configured to cycle the valve between an open position and a closed position at a first frequency and a first duty cycle while a magnitude of pressure oscillations within the combustor is less than a threshold value, to cycle the valve between the open position and the closed position at a second frequency and a second duty cycle while the magnitude of the pressure oscillations within the combustor is greater than or equal to the threshold value, and to adjust the second frequency based on a measured frequency of the pressure oscillations.Type: ApplicationFiled: June 29, 2012Publication date: January 9, 2014Applicant: General Electric CompanyInventors: Zekai Hong, Joel Meier Haynes, Keith Robert McManus, John Thomas Herbon
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Publication number: 20130192243Abstract: A fuel nozzle assembly for use with a turbine engine includes at least one fuel conduit coupled to at least one fuel source. The fuel nozzle assembly also includes at least one swirler that includes at least one wall having a porous portion. The at least one wall is coupled to the at least one fuel conduit. The porous portion is formed from a material having a porosity that facilitates fuel flow therethrough. At least one fuel flow path is thereby defined through the porous portion of the at least one wall.Type: ApplicationFiled: January 31, 2012Publication date: August 1, 2013Inventors: Matthew Patrick Boespflug, Seyed Gholamali Saddoughi, Grover Andrew Bennett, JR., John Thomas Herbon
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Publication number: 20130162322Abstract: A gate drive circuit includes an insulated gate semiconductor switch. A controlled current source is connected to the semiconductor switch gate terminal to provide a gate drive circuit that is responsive to recycled gate charge corresponding to an internal gate capacitance of the insulated gate semiconductor switch.Type: ApplicationFiled: December 23, 2011Publication date: June 27, 2013Applicant: GENERAL ELECTRIC COMPANYInventors: Fengfeng Tao, Seyed Gholamali Saddoughi, John Thomas Herbon
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Publication number: 20130107590Abstract: A power generator includes one or more full bridge inverter modules coupled to a semiconductor opening switch (SOS) through an inductive resonant branch. Each module includes a plurality of switches that are switched in a fashion causing the one or more full bridge inverter modules to drive the semiconductor opening switch SOS through the resonant circuit to generate pulses to a load connected in parallel with the SOS.Type: ApplicationFiled: October 31, 2011Publication date: May 2, 2013Applicant: GENERAL ELECTRIC COMPANYInventors: Fengfeng Tao, Seyed Gholamali Saddoughi, John Thomas Herbon
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Publication number: 20120272655Abstract: A system and a method of generating energy in a power plant using a turbine are provided. The system includes an air separation unit providing an oxygen output; a plasma generator that is capable of generating plasma; and a combustor configured to receive oxygen and to combust a fuel stream in the presence of the plasma, so as to maintain a stable flame, generating an exhaust gas. The system can further include a water condensation system, fluidly-coupled to the combustor, that is capable of producing a high-content carbon dioxide stream that is substantially free of oxygen. The method of generating energy in a power plant includes the steps of operating an air separation unit to separate oxygen from air, combusting a fuel stream in a combustor in the presence of oxygen, and generating an exhaust gas from the combustion. The exhaust gas can be used in a turbine to generate electricity. A plasma is generated inside the combustor, and a stable flame is maintained in the combustor.Type: ApplicationFiled: April 29, 2011Publication date: November 1, 2012Applicant: GENERAL ELECTRIC COMPANYInventors: Ahmed Mostafa ELKady, Uyigue Omoma Idahosa, Matthew Patrick Boespflug, Grover Andrew Bennett, John Thomas Herbon, Hasan Karim, Geoffrey David Myers, Seyed Gholamali Saddoughi
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Publication number: 20120144832Abstract: A gas turbine combustion system passive air-fuel mixing prechamber includes one or more fuel passages. Each fuel passage includes at least one downstream fuel injection orifice. One or more fluid conduits connect an upstream portion of at least one fuel passage with one or more air passages such that pressure drops across each fuel injection orifice substantially self-equalize in a passive manner with corresponding air passage pressure drops over a broad range of fuel lower heating value (LHV) from about 150 Btu/scf to about 900 Btu/scf of fuel passing through the fuel passage while mixing with air passing through one or more connected fluid conduits. The effective area of each fluid conduit relative to the corresponding fuel and air passages is dependent upon the desired fuel LHV operating range.Type: ApplicationFiled: December 10, 2010Publication date: June 14, 2012Applicant: GENERAL ELECTRIC COMPANYInventors: John Thomas Herbon, Matthew Patrick Boespflug, Grover Andrew Bennett, Fengfeng Tao, Giridhar Jothiprasad
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Patent number: 8082725Abstract: In one embodiment, a combustion apparatus comprises: an oxidant inlet, a fuel inlet, a mixing zone configured to mix fuel and oxidant to form a mixture, a combustion zone in fluid communication with the mixing zone and configured to combust the mixture, and an outlet in fluid communication with the combustion zone. The mixing zone, the combustion zone, and/or the outlet comprises an electro-dynamic swirler configured to swirl ionized gas. The electro-dynamic swirler comprises a plurality of electrodes in electrical communication with a power source. In one embodiment, a method of creating thrust comprises: mixing a fuel and an oxidant to form a mixture, igniting the mixture to form an ignited mixture, combusting the ignited mixture to form a flame, and using the flame to create thrust, wherein the flame and/or the fuel and oxidant are electro-dynamically swirled.Type: GrantFiled: April 12, 2007Date of Patent: December 27, 2011Assignee: General Electric CompanyInventors: Abdelkrim Younsi, Seyed Gholamali Saddoughi, John Thomas Herbon, Florian Peter Pintgen
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Publication number: 20100300110Abstract: A process for providing a fuel supplied to one or more combustors in a gas turbine engine system, comprising: reforming a fraction of the fuel in one or more fuel circuits of the gas turbine combustion system with a plasma reformer system to form at least one of hydrogen and higher order hydrocarbons to be supplied to the one or more combustors with a remaining fraction of the fuel; and controlling at least one of power and fuel flow to the plasma reformer system with an active feedback control system.Type: ApplicationFiled: May 28, 2009Publication date: December 2, 2010Applicant: GENERAL ELECTRIC COMPANYInventors: Gilbert Otto Kraemer, Jeffrey Scott Goldmeer, John Thomas Herbon, Ertan Yilmaz