Patents by Inventor Bugra Han Ertas

Bugra Han Ertas 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).

  • Patent number: 10508731
    Abstract: A planet gear includes a pin and an annular planet gear rim. The pin has a pin radius. The pin includes a pin outer surface. The annular planet gear rim has an inner radius and an outer radius. The annular planet gear rim includes an inner surface and an outer surface. The inner surface and the pin outer surface define a clearance therebetween. The clearance is greater than 0 when a radial force is applied to the planet gear.
    Type: Grant
    Filed: January 5, 2017
    Date of Patent: December 17, 2019
    Assignee: General Electric Company
    Inventors: Darren Lee Hallman, Donald Albert Bradley, Changjie Sun, Bugra Han Ertas
  • Publication number: 20190368549
    Abstract: An axial load management system for a turbomachine including a rotating drivetrain, a thrust bearing assembly, a sensor, and a valve supply line. The rotating drivetrain includes a compressor section and an expander section fluidly coupled together by a closed flowpath. The thrust bearing assembly includes a thrust runner, a thrust bearing housing, and a gas thrust bearing extending between the thrust runner and the thrust bearing housing. Further, the gas thrust bearing supports the rotating drivetrain. The sensor is attached to at least one of the thrust bearing housing or the gas thrust bearing. The valve supply line is fluidly coupled to the closed flowpath. A valve positioned within the valve supply line selectively allows a working fluid to flow between the closed flowpath and a thrust chamber defined by a rotating surface and a fixed surface to modify an axial load on the rotating drivetrain.
    Type: Application
    Filed: May 31, 2018
    Publication date: December 5, 2019
    Inventors: Bugra Han Ertas, Douglas Carl Hofer, Younkoo Jeong
  • Publication number: 20190293117
    Abstract: Heat engines employing fluid bearing assemblies hermetically sealed with a closed flowpath for a working fluid are generally disclosed. For example, the heat engine includes a rotating drivetrain and a fluid bearing assembly. The rotating drivetrain includes a compressor section, an expander section, and a heat exchanger. The compressor section and expander section together define at least in part a closed flowpath for the flow of a working fluid. The heat exchanger is thermally coupled to the closed flowpath for adding heat to the working fluid. The fluid bearing assembly is configured to utilize the working fluid to support the rotating drivetrain. Further, the fluid bearing assembly is hermetically sealed with the closed flowpath.
    Type: Application
    Filed: March 23, 2018
    Publication date: September 26, 2019
    Inventors: Bugra Han Ertas, Douglas Carl Hofer
  • Publication number: 20190264800
    Abstract: A gearbox assembly for a gas turbine engine used in an aircraft having passive lubrication capabilities during wind milling includes a gearbox housing, a gear train assembly housed within the gearbox housing, a lubricant in the gearbox housing for lubricating the gear train assembly, and a first scavenge port formed in the gearbox housing. The first scavenge port is changeable between an open position and a closed position. Further, the first scavenge port remains in the open position during normal operation of the gas turbine engine to allow the lubricant to drain from the gearbox housing. Upon occurrence of a loss of lubricant pressure in the gearbox assembly, the first scavenge port is changed to the closed position to trap at least a portion of the lubricant in the gearbox housing. Thus, the trapped lubricant provides passive lubrication to the gear train assembly during the loss of lubricant pressure.
    Type: Application
    Filed: February 23, 2018
    Publication date: August 29, 2019
    Inventors: Kenneth Lee Fisher, George Hanna Ghanime, Bugra Han Ertas, Darren Lee Hallman
  • Patent number: 10392970
    Abstract: A shaft assembly for a rotary machine, the rotary machine includes a low pressure compressor, a high pressure compressor, a high pressure turbine, and a low pressure turbine. The shaft assembly includes an outer shaft configured to couple the high pressure compressor to the high pressure turbine. The outer shaft includes a first forward bearing assembly positioned forward of the high pressure compressor, and a first aft bearing assembly positioned between the high pressure compressor and the high pressure turbine. The shaft assembly also includes an inner shaft rotatable about a common axis with the outer shaft that at least partially extends about the inner shaft. The inner shaft is configured to couple the low pressure compressor to the low pressure turbine. The inner shaft includes a second forward bearing assembly positioned forward of the low pressure compressor, and a second aft bearing assembly positioned proximate the high pressure turbine.
    Type: Grant
    Filed: November 2, 2016
    Date of Patent: August 27, 2019
    Assignee: General Electric Company
    Inventors: Bugra Han Ertas, Brandon Wayne Miller
  • Publication number: 20190186598
    Abstract: A planet gear includes an annular planet gear rim having a constant inner radius along a complete axial length and an outer radius defined as the radial distance to the root of the gear teeth. The annular planet gear rim further has an average rim radius defined at a halfway point between the constant inner radius and the outer radius. The average rim radius and the rim thickness define a ratio including values in a range from and including about 4 to and including about 9. A gear assembly and turbomachine including the planet gear are disclosed.
    Type: Application
    Filed: February 25, 2019
    Publication date: June 20, 2019
    Inventors: Kennneth Lee Fisher, Darren Lee Hallman, Bugra Han Ertas, Donald Albert Bradley, Haris Ligata, William Howard Hasting, Ning Fang, Gert Johannes van der Merwe, Mark Alan Rhoads
  • Publication number: 20190136958
    Abstract: A planet gear train for an engine casing includes a sun gear rotatable by a shaft, a ring gear, a plurality of planet gears rotatably mounted in a planet carrier and meshing with the sun gear and the ring gear, and a damping system. The damping system includes a soft mount disposed about the shaft and coupling the planet carrier the engine casing. The soft mount includes a flexible inner sleeve and a flexible outer sleeve. The flexible inner sleeve and the flexible outer sleeve are fixedly coupled together at respective central portions thereof near the shaft. The damping system further includes a plurality of damping couplers disposed about an outer flange of the planet carrier. The plurality of damping couplers is configured to flexibly couple the flexible inner sleeve to the flexible outer sleeve.
    Type: Application
    Filed: September 20, 2018
    Publication date: May 9, 2019
    Inventors: Brandon Wayne Miller, Randy M. Vondrell, Donald Albert Bradley, Bugra Han Ertas
  • Patent number: 10274071
    Abstract: An epicyclic gearing arrangement includes a planet gear rotatable on a planet bearing that is mounted via a support pin to a carrier of the epicyclic gearing arrangement. A spring film damper is disposed between the outer surface of the bearing's outer ring and the opposing inner surface of the planet gear and includes an annular gap. The support pin and/or outer ring include oil feed holes that open into the respective annular gap(s).
    Type: Grant
    Filed: January 28, 2016
    Date of Patent: April 30, 2019
    Assignee: General Electric Company
    Inventors: Daniel Alan Niergarth, Brandon Wayne Miller, Bugra Han Ertas, Donald Albert Bradley, Joseph Robert Dickman
  • Patent number: 10247017
    Abstract: A system includes a gas delivery disk coupled to a second shaft, wherein the second shaft and the gas delivery disk are disposed about an axis. The gas delivery disk includes an inner axial opening configured to facilitate a first axial flow through a first passage within the second shaft, a duct configured to supply a bearing flow in a radial direction toward the axis, and a bearing face disposed within the first passage and radially interior to the inner axial opening. The bearing face is configured to receive the bearing flow, and the bearing face is configured to form a gas bearing between the bearing face and a first shaft disposed about the axis.
    Type: Grant
    Filed: June 29, 2016
    Date of Patent: April 2, 2019
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Brandon Wayne Miller, Thomas Lee Becker, Daniel Alan Niergarth, Bugra Han Ertas
  • Patent number: 10190431
    Abstract: A seal assembly for a rotary machine is provided. The seal assembly includes a plurality of seal segments disposed circumferentially intermediate to a stationary housing and a rotor, where each of the plurality of seal segments includes a stator interface element and a shoe plate movably supported by the stator interface element. The shoe plate includes one or more labyrinth teeth, a load-bearing surface, and one or more supply ports for facilitating supply of high pressure fluid toward the rotor. In one embodiment, the shoe plate also includes a radially extending portion that is in contact with a portion of the ring movably supported into the stator interface element. In another embodiment, each of the plurality of seal segments includes a plurality of overlapping spring-loaded leaf seal plates in contact with the stator interface element and the radially extending portion. Method of operating the seal segment is also disclosed.
    Type: Grant
    Filed: February 11, 2015
    Date of Patent: January 29, 2019
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Rahul Anil Bidkar, Christopher Edward Wolfe, Bugra Han Ertas, Adolfo Delgado Marquez, Nathan Evan McCurdy Gibson
  • Publication number: 20180372229
    Abstract: A seal assembly for a rotary machine is provided. The seal assembly includes a plurality of seal segments disposed circumferentially intermediate to a stationary housing and a rotor, where each of the plurality of seal segments includes a stator interface element and a shoe plate movably supported by the stator interface element. The shoe plate includes one or more labyrinth teeth, a load-bearing surface, and one or more supply ports for facilitating supply of high pressure fluid toward the rotor. In one embodiment, the shoe plate also includes a radially extending portion that is in contact with a portion of the ring movably supported into the stator interface element. In another embodiment, each of the plurality of seal segments includes a plurality of overlapping spring-loaded leaf seal plates in contact with the stator interface element and the radially extending portion. Method of operating the seal segment is also disclosed.
    Type: Application
    Filed: February 11, 2015
    Publication date: December 27, 2018
    Inventors: Rahul Anil Bidkar, Christopher Edward Wolfe, Bugra Han Ertas, Adolfo Delgado Marquez, Nathan Evan McCurdy Gibson
  • Patent number: 10113633
    Abstract: An epicyclic gearing arrangement includes a planet gear rotatable on a planet bearing that is mounted via a support pin to a carrier of the epicyclic gearing arrangement. A spring film damper is disposed between the cylindrical outer surface of the support pin and the opposing inner surface of the inner ring of the planet bearing and includes an annular gap.
    Type: Grant
    Filed: January 28, 2016
    Date of Patent: October 30, 2018
    Assignee: General Electric Company
    Inventors: Daniel Alan Niergarth, Brandon Wayne Miller, Bugra Han Ertas, Donald Albert Bradley, Joseph Robert Dickman
  • Patent number: 10107378
    Abstract: A planet gear train for an engine casing includes a sun gear rotatable by a shaft, a ring gear, a plurality of planet gears rotatably mounted in a planet carrier and meshing with the sun gear and the ring gear, and a damping system. The damping system includes a soft mount disposed about the shaft and coupling the planet carrier the engine casing. The soft mount includes a flexible inner sleeve and a flexible outer sleeve. The flexible inner sleeve and the flexible outer sleeve are fixedly coupled together at respective central portions thereof near the shaft. The damping system further includes a plurality of damping couplers disposed about an outer flange of the planet carrier. The plurality of damping couplers is configured to flexibly couple the flexible inner sleeve to the flexible outer sleeve.
    Type: Grant
    Filed: November 3, 2015
    Date of Patent: October 23, 2018
    Assignee: General Electric Company
    Inventors: Brandon Wayne Miller, Randy M. Vondrell, Donald Albert Bradley, Bugra Han Ertas
  • Patent number: 10094283
    Abstract: Embodiments of a gas bearing for aircraft engines are provided herein. In some embodiments, a gas bearing may include a first shaft; a second shaft disposed concentrically about the first shaft; and a protrusion extending from at least one of an inner surface of the first shaft or the outer surface of the second shaft to form a gap between the first shaft and the second shaft.
    Type: Grant
    Filed: October 28, 2015
    Date of Patent: October 9, 2018
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Bugra Han Ertas, Daniel Alan Niergarth, Brandon Wayne Miller
  • Patent number: 10094335
    Abstract: Embodiments of a compliant shaft for engines are provided herein. In some embodiments, a compliant shaft for a turbine engine may include: a body having a first end configured to be coupled to a shaft of a turbine and a second end coupled to a gear of a gear box, wherein at least a portion of the body is flexible.
    Type: Grant
    Filed: December 7, 2015
    Date of Patent: October 9, 2018
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Bugra Han Ertas, Kenneth Lee Fisher, Donald Albert Bradley
  • Patent number: 10066505
    Abstract: The present disclosure is directed to a gas-lubricated bearing assembly for a gas turbine engine and method of damping same. The bearing assembly includes a bearing pad for supporting a rotary component and a bearing housing attached to or formed integrally with the bearing pad. The bearing housing includes a first fluid damper cavity, a second fluid damper cavity in restrictive flow communication with the first fluid damper cavity via a restrictive channel configured as a clearance gap, and a damper fluid configured within the first and second fluid damper cavities. More specifically, the damper fluid of the present disclosure is configured to withstand the high temperature environment of the engine. Thus, the bearing housing is configured to transfer the damper fluid from the first fluid damper cavity to the second fluid damper cavity via the restrictive channel in response to a force acting on the bearing pad.
    Type: Grant
    Filed: April 18, 2016
    Date of Patent: September 4, 2018
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Bugra Han Ertas, Joshua Tyler Mook, Jason Joseph Bellardi
  • Patent number: 10054163
    Abstract: A bearing cage for a roller bearing assembly includes an annular body defining a circumferential centerline extending therethrough. The annular body includes an outer circumferential surface, an opposing inner circumferential surface, and a plurality of circumferentially spaced roller cavities defined therein. Each roller cavity of the plurality of roller cavities is configured to receive an associated roller element. Each roller cavity includes a first radial cross-wall defined within the annular body extending from the outer circumferential surface to the inner circumferential surface. Each roller cavity further includes an opposing second radial cross-wall defined within the annular body extending from the outer circumferential surface to the inner circumferential surface. At least a portion of the first radial cross-wall and at least a portion of the second radial cross-wall are complimentary to the associated roller element.
    Type: Grant
    Filed: November 15, 2016
    Date of Patent: August 21, 2018
    Assignee: General Electric Company
    Inventors: Kenneth Lee Fisher, Bugra Han Ertas
  • Patent number: 10041375
    Abstract: Embodiments of a heat exchanger for turbine engines are provided herein. In some embodiments, a heat exchanger for a turbine engine may include a body configured to be disposed proximate and at least partially surrounding a heat source, wherein the body defines a cavity configured to capture a heated fluid expelled from the heat source; and a channel formed in the body, the channel fluidly coupled to a heat sink.
    Type: Grant
    Filed: November 10, 2015
    Date of Patent: August 7, 2018
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: William Dwight Gerstler, Bugra Han Ertas
  • Patent number: 10036279
    Abstract: A bearing including a bearing pad and a housing is provided. The bearing pad has a thrust face for supporting a vibration along an axial direction of the bearing. Additionally, the housing is formed integrally using an additive manufacturing process and is attached to or formed integrally with the bearing pad. The housing defines a working gas delivery system for providing a flow of pressurized working gas to the thrust face of the bearing pad and a fluid damper cavity. The fluid damper cavity provides a dampening of the axial vibration supported by the thrust face of the bearing pad along the axial direction.
    Type: Grant
    Filed: April 18, 2016
    Date of Patent: July 31, 2018
    Assignee: General Electric Company
    Inventors: Bugra Han Ertas, Joshua Tyler Mook, Jason Joseph Bellardi
  • Publication number: 20180209479
    Abstract: A bearing includes a bearing pad for supporting a rotary component and a housing attached to or formed integrally with the bearing pad. The housing includes a flexible column extending towards the bearing pad for providing the bearing pad with an airflow. The column supports the bearing pad from a location inward of an outer periphery of the bearing pad along an axial direction of the bearing. With such a configuration, a resistance of the bearing pad along a radial direction of the bearing is less at the outer periphery than a resistance of the bearing pad along the radial direction proximate the column.
    Type: Application
    Filed: March 19, 2018
    Publication date: July 26, 2018
    Inventors: Joshua Tyler Mook, Bugra Han Ertas, Jason Joseph Bellardi