Patents by Inventor Andrew Mitchell Rodwell

Andrew Mitchell Rodwell 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).

  • Publication number: 20190283347
    Abstract: A method for manufacturing a rotor blade root assembly includes placing outer skin layer(s) onto a blade mold and arranging a root plate with a plurality of through holes adjacent to an end face of the blade mold. The method also includes placing a plurality of root inserts atop the outer skin layer(s) and abutting against the root plate, with each of the root inserts defining a fastener hole. The method also includes inserting a root fastener into each of the aligned through holes and longitudinal fastener holes. Moreover, the method includes placing inner skin layer(s) atop the root inserts. Further, the root plate may include at least one fluid hole configured therethrough to provide a non-gas tight root plate. Alternatively, at least one seal may be arranged between the root plate and the blade mold that forms a non-gas tight connection with either or both of the root plate or the blade mold during a vacuum infusion process.
    Type: Application
    Filed: March 16, 2018
    Publication date: September 19, 2019
    Inventors: Alan M. Walker, Andrew Mitchell Rodwell, David Patrick Cripps, James Paul Davidson, Miguel Cabrera Lange, Nicholas Michael Seruntine
  • Publication number: 20190040842
    Abstract: A joint assembly for joining rotor blade segments of a wind turbine rotor blade includes a female structural member secured within a first rotor blade segment. The female structural member includes first bore holes on opposing sides thereof that are aligned in a chord-wise direction. Further, the joint assembly includes a male structural member extending longitudinally from an end face of a second rotor blade segment. As such, the male structural member is received within the female structural member of the first rotor blade segment such that the first and second rotor blade segments are aligned and connected. The male structural member includes second bore holes on opposing sides thereof. Further, the second bore holes are aligned with the first bore holes. Moreover, the joint assembly includes at least one chord-wise extending pin extending through the first and second bore holes so as to join the first and second rotor blade segments.
    Type: Application
    Filed: August 7, 2017
    Publication date: February 7, 2019
    Inventors: Aaron A. Yarbrough, Christopher Daniel Caruso, Scott Jacob Huth, Andrew Mitchell Rodwell
  • Publication number: 20180372065
    Abstract: A wind turbine blade shell component is made by providing a plurality of first pultrusion plates formed of a first fiber material, and a plurality of second pultrusion plates formed of a second fiber material. The first and second pultrusion plates are stacked in a hybrid pattern that includes a first section containing a plurality of the first and second pultrusion plates having a length shorter than an entire length of a spar cap for a wind turbine blade shell, and a core section having a continuous unbroken length of the second fiber material corresponding to an entire length of the spar cap. The stacked pattern is arranged on blade shell materials in a mold for the blade shell component and is bonded with the blade shell materials to form the blade shell component.
    Type: Application
    Filed: June 21, 2017
    Publication date: December 27, 2018
    Inventors: Jamie T. Livingston, Edward McBeth Stewart, Andrew Mitchell Rodwell
  • Publication number: 20180051672
    Abstract: A spar cap assembly for a jointed rotor blade of a wind turbine includes a root spar cap assembly and a tip spar cap assembly. The root spar cap assembly includes a root tensile spar cap and a root compressive spar cap, and is formed from a first composite material. The tip spar cap assembly includes a tip tensile spar cap and a tip compressive spar cap, and is formed from a second composite material that is different from the first composite material. The thickness of a joining end of the root tensile spar cap is different from the thickness of a joining end of the tip tensile spar cap, and the thickness of a joining end of the root compressive spar cap is different from the thickness of a joining end of the tip compressive spar cap.
    Type: Application
    Filed: August 19, 2016
    Publication date: February 22, 2018
    Inventors: Thomas Merzhaeuser, Sara Simonne Louisa Delport, Andrew Mitchell Rodwell, Aaron Alpheus Yarbrough
  • Patent number: 9771864
    Abstract: A supercharging system for a gas turbine system is provided supercharging system having a fan mechanically coupled to the turbine shaft of the turbine system. A bypass subsystem is provided or optionally conveying a portion of the airstream output to other uses. The supercharging system may also be used in conjunction with a combined cycle power system and a bypass subsystem optionally conveys a portion of the airstream output to a heat recovery steam generator.
    Type: Grant
    Filed: May 31, 2012
    Date of Patent: September 26, 2017
    Assignee: General Electric Company
    Inventors: John Anthony Conchieri, Robert Thomas Thatcher, Andrew Mitchell Rodwell
  • Patent number: 9381462
    Abstract: A system for reducing emissions includes a gas production source that produces nitrogen oxides, sulfur oxides, hydrogen sulfide, sulfuric acid, nitric acid, formaldehyde, benzene, metal oxides, or volatile organic compound emissions. An exhaust plenum is downstream from the gas production source, and structure for dispersing a solvent is in the exhaust plenum. A collection tank is in fluid communication with the exhaust plenum to receive the solvent from the exhaust plenum, and a heat source is in the exhaust plenum downstream from the structure for dispersing the solvent. A method for reducing emissions from a gas production source includes flowing exhaust gases through an exhaust plenum, dispersing a solvent through a nozzle in the exhaust plenum, collecting the dispersed solvent in a collection tank, and heating the exhaust gases flowing through the exhaust plenum downstream from the nozzle.
    Type: Grant
    Filed: July 1, 2013
    Date of Patent: July 5, 2016
    Assignee: General Electric Company
    Inventors: Robert Thomas Thatcher, Gilbert Otto Kraemer, Andrew Mitchell Rodwell, Brett Matthew Thompson
  • Patent number: 9181876
    Abstract: A gas turbine includes a compressor, a combustor downstream from the compressor and a heat transfer system, wherein the heat transfer system receives a compressed working fluid from the compressor. A fluid coupling between the heat transfer system and the combustor, wherein the fluid coupling receives the compressed working fluid from the heat transfer system. A conditioner in fluid communication with the compressor and a fluid coupling between the heat transfer system and the conditioner, wherein the fluid coupling receives a cooling media from the heat transfer system. A method for operating the gas turbine includes flowing a compressed working fluid from the compressor to the heat transfer system, transferring heat energy from the compressed working fluid to the heat transfer system, flowing the compressed working fluid from the heat transfer system to a combustor, and flowing a cooling media from the heat transfer system to a compressor inlet.
    Type: Grant
    Filed: January 4, 2012
    Date of Patent: November 10, 2015
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Predrag Popovic, William Francis Carnell, Jr., Andrew Mitchell Rodwell
  • Publication number: 20150000244
    Abstract: A system for reducing emissions includes a gas production source that produces nitrogen oxides, sulfur oxides, hydrogen sulfide, sulfuric acid, nitric acid, formaldehyde, benzene, metal oxides, or volatile organic compound emissions. An exhaust plenum is downstream from the gas production source, and structure for dispersing a solvent is in the exhaust plenum. A collection tank is in fluid communication with the exhaust plenum to receive the solvent from the exhaust plenum, and a heat source is in the exhaust plenum downstream from the structure for dispersing the solvent. A method for reducing emissions from a gas production source includes flowing exhaust gases through an exhaust plenum, dispersing a solvent through a nozzle in the exhaust plenum, collecting the dispersed solvent in a collection tank, and heating the exhaust gases flowing through the exhaust plenum downstream from the nozzle.
    Type: Application
    Filed: July 1, 2013
    Publication date: January 1, 2015
    Inventors: Robert Thomas Thatcher, Gilbert Otto Kraemer, Andrew Mitchell Rodwell, Brett Matthew Thompson
  • Publication number: 20140287367
    Abstract: A system for operating a combustor includes a sensor that measures an operating parameter associated with the combustor and generates a signal reflective of the operating parameter. The operating parameter is reflective of an ash deposition rate or an accumulated ash buildup. A controller receives the signal, compares the signal to a predetermined limit, and generates a control signal. A method for operating a combustor includes operating the combustor at a first power level that produces a first temperature that is less than or equal to a first predetermined temperature and creating a layer of ash. The method further includes measuring an operating parameter reflective of an ash deposition rate or an accumulated ash buildup, comparing the operating parameter to a limit, and operating the combustor at a second power level that produces a second temperature that is greater than or equal to the first predetermined temperature.
    Type: Application
    Filed: June 6, 2014
    Publication date: September 25, 2014
    Inventors: Robert Thomas Thatcher, Gilbert Otto Kraemer, Andrew Mitchell Rodwell, Matthew M. Scheid
  • Publication number: 20140260287
    Abstract: Gas turbine firing temperature optimization based on a measured sulfur content of a fuel supply of the gas turbine system is provided. In one embodiment, a system includes a diagnostic system configured to determine a maximum firing temperature for a combustor of a gas turbine system. The diagnostic system may determine the maximum firing temperature based on a predetermined sulfur content to maximum firing temperature correlation and an actual sulfur content of a fuel supplied to the combustor. The diagnostic system may also be configured to provide an indicator for a change in an actual firing temperature in the combustor of the gas turbine system. The diagnostic system may provide the indicator in response to the determined maximum firing temperature differing from the actual firing temperature of the combustor of the gas turbine system.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Robert Thomas Thatcher, Bradley Steven Carey, Paul Burchell Glaser, Ariel Harter Lomas, Andrew Mitchell Rodwell
  • Publication number: 20130318997
    Abstract: A supercharging system for a gas turbine system is provided supercharging system having a fan mechanically coupled to the turbine shaft of the turbine system. A bypass subsystem is provided or optionally conveying a portion of the airstream output to other uses. The supercharging system may also be used in conjunction with a combined cycle power system and a bypass subsystem optionally conveys a portion of the airstream output to a heat recovery steam generator.
    Type: Application
    Filed: May 31, 2012
    Publication date: December 5, 2013
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: John Anthony Conchieri, Robert Thomas Thatcher, Andrew Mitchell Rodwell
  • Publication number: 20130167548
    Abstract: A gas turbine includes a compressor, a combustor downstream from the compressor and a heat transfer system, wherein the heat transfer system receives a compressed working fluid from the compressor. A fluid coupling between the heat transfer system and the combustor, wherein the fluid coupling receives the compressed working fluid from the heat transfer system. A conditioner in fluid communication with the compressor and a fluid coupling between the heat transfer system and the conditioner, wherein the fluid coupling receives a cooling media from the heat transfer system. A method for operating the gas turbine includes flowing a compressed working fluid from the compressor to the heat transfer system, transferring heat energy from the compressed working fluid to the heat transfer system, flowing the compressed working fluid from the heat transfer system to a combustor, and flowing a cooling media from the heat transfer system to a compressor inlet.
    Type: Application
    Filed: January 4, 2012
    Publication date: July 4, 2013
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Predrag Popovic, William Francis Carnell, JR., Andrew Mitchell Rodwell
  • Publication number: 20130045449
    Abstract: A system for operating a combustor includes a sensor that measures an operating parameter associated with the combustor and generates a signal reflective of the operating parameter. The operating parameter is reflective of an ash deposition rate or an accumulated ash buildup. A controller receives the signal, compares the signal to a predetermined limit, and generates a control signal. A method for operating a combustor includes operating the combustor at a first power level that produces a first temperature that is less than or equal to a first predetermined temperature and creating a layer of ash. The method further includes measuring an operating parameter reflective of an ash deposition rate or an accumulated ash buildup, comparing the operating parameter to a limit, and operating the combustor at a second power level that produces a second temperature that is greater than or equal to the first predetermined temperature.
    Type: Application
    Filed: August 19, 2011
    Publication date: February 21, 2013
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Robert Thomas Thatcher, Gilbert Otto Kraemer, Andrew Mitchell Rodwell, Matthew M. Scheid
  • Patent number: 8359870
    Abstract: A flame-holding control method in a gas turbine having a combustor can and a fuel nozzle disposed in the combustor can. The method can include performing a first scheduled injection of a diluent stream into the nozzle, checking to see if a time period has exceeded a time threshold and in response to the time period being greater than that the time threshold, performing a second scheduled injection of the diluent stream into the nozzle.
    Type: Grant
    Filed: May 12, 2009
    Date of Patent: January 29, 2013
    Assignee: General Electric Company
    Inventors: Robert Thomas Thatcher, Joel Meador Hall, Andrew Mitchell Rodwell
  • Publication number: 20120180493
    Abstract: A combined cycle power plant includes a first compressor that produces a compressed working fluid and a turbine downstream of the first compressor. The turbine includes stationary components and rotating components and produces an exhaust. A heat exchanger downstream of the turbine receives the exhaust from the turbine, and a second compressor downstream of the heat exchanger and upstream of the turbine receives the exhaust from the heat exchanger and provides a flow of exhaust to the turbine. A method for reducing oxygen emissions from a gas turbine includes flowing an exhaust from a turbine to a heat exchanger and removing heat from the exhaust. The method further includes increasing the pressure of the exhaust to produce a pressurized exhaust and flowing the pressurized exhaust back to the turbine to remove heat from the turbine.
    Type: Application
    Filed: January 13, 2011
    Publication date: July 19, 2012
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Daniel David Snook, Andrew Mitchell Rodwell
  • Publication number: 20110083444
    Abstract: A system includes a gas turbine compressor including multiple radial protrusions disposed about a circumference of the gas turbine compressor. Each radial protrusion includes multiple gaseous fuel injection orifices configured to inject gaseous fuel into the gas turbine compressor.
    Type: Application
    Filed: October 9, 2009
    Publication date: April 14, 2011
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Mahesh Bathina, Ramanand Singh, Gunnar Leif Siden, Andrew Mitchell Rodwell, Robert Thomas Thatcher
  • Publication number: 20100287937
    Abstract: A flame-holding control method in a gas turbine having a combustor can and a fuel nozzle disposed in the combustor can. The method can include performing a first scheduled injection of a diluent stream into the nozzle, checking to see if a time period has exceeded a time threshold and in response to the time period being greater than that the time threshold, performing a second scheduled injection of the diluent stream into the nozzle.
    Type: Application
    Filed: May 12, 2009
    Publication date: November 18, 2010
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Robert Thomas Thatcher, Joel Meador Hall, Andrew Mitchell Rodwell
  • Publication number: 20100186367
    Abstract: A power plant, including a compressor, in which inlet air is compressed for combustion operations, is provided and includes a separation unit, which receives and removes nitrogen from an air supply, and a system, coupled to the separation unit and an inlet disposed upstream from and in fluid communication with the compressor, which receives the nitrogen from the separation unit and delivers the nitrogen to the inlet.
    Type: Application
    Filed: January 27, 2009
    Publication date: July 29, 2010
    Applicant: GENERAL ELECTRIC COMPANY
    Inventor: Andrew Mitchell Rodwell