Patents by Inventor Atul Kohli

Atul Kohli 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: 10280841
    Abstract: A method of increasing a heat transfer of a cooling fluid passing through a component of a gas turbine engine. The method including the steps of: directing a cooling fluid between an interior surface of an internal cooling cavity of the component and an exterior surface of a baffle insert located in the internal cooling cavity; and creating a plurality of vortices in the cooling fluid as it passes between the exterior surface of the baffle insert and the interior surface of the internal cooling cavity, wherein the internal cooling cavity is elliptical in shape.
    Type: Grant
    Filed: December 7, 2015
    Date of Patent: May 7, 2019
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventors: Brandon W. Spangler, Atul Kohli
  • Publication number: 20190078785
    Abstract: A combustor panel may include an attachment feature. Because conventional attachment features of conventional combustor panels may be insufficiently cooled, the present disclosure provides various combustor configurations for reducing hotspots in the vicinity of attachment features and/or for providing cooling airflow to and in the vicinity of attachment features.
    Type: Application
    Filed: September 8, 2017
    Publication date: March 14, 2019
    Applicant: UNITED TECHNOLOGIES CORPORATION
    Inventors: Tracy A. Propheter-Hinckley, Atul Kohli, Benjamin D. Bellows, Brandon W. Spangler, David J. Hyland, Dennis M. Moura, Dustin W. Davis, Mark F. Zelesky, Ricardo Trindade, Stephen K. Kramer, Steven Bruce Gautschi, Trevor Rudy
  • Publication number: 20190078786
    Abstract: A combustor panel may include an attachment feature. Because conventional attachment features of conventional combustor panels may be insufficiently cooled, the present disclosure provides various combustor configurations for reducing hotspots in the vicinity of attachment features and/or for providing cooling airflow to and in the vicinity of attachment features.
    Type: Application
    Filed: September 8, 2017
    Publication date: March 14, 2019
    Applicant: UNITED TECHNOLOGIES CORPORATION
    Inventors: Tracy A. Propheter-Hinckley, Atul Kohli, Brandon W. Spangler, David J. Hyland, Dustin W. Davis, Ricardo Trindade, Stephen K. Kramer, Steven Bruce Gautschi
  • Publication number: 20190078788
    Abstract: A combustor panel may include an attachment feature. Because conventional attachment features of conventional combustor panels may be insufficiently cooled, the present disclosure provides various combustor configurations for reducing hotspots in the vicinity of attachment features and/or for providing cooling airflow to and in the vicinity of attachment features.
    Type: Application
    Filed: September 8, 2017
    Publication date: March 14, 2019
    Applicant: UNITED TECHNOLOGIES CORPORATION
    Inventors: Tracy A Propheter-Hinckley, Atul Kohli, Benjamin D Bellows, Dustin W Davis, James B Hoke, Stephen K Kramer, Steven Bruce Gautschi, Trevor Rudy
  • Publication number: 20190071980
    Abstract: Airfoils and gas turbine engines having the same, the airfoils including an airfoil body having a leading edge and a trailing edge extending in a radial direction, a cooling cavity defined within the airfoil body, wherein at least one wall of the cooling cavity is a curved end wall, and an end wall contoured pedestal positioned adjacent the curved end wall. The end wall contoured pedestal has a first portion with a contoured side wall and a parallel side wall, and a second portion with tapering side walls, wherein the contoured side wall faces the curved end wall, the contoured side wall paralleling a contour of the curved end wall and defining a meter section therebetween.
    Type: Application
    Filed: September 6, 2017
    Publication date: March 7, 2019
    Inventors: Brandon W. Spangler, Atul Kohli
  • Publication number: 20180347919
    Abstract: Disclosed is a module for a gas turbine engine, the module including: a disk rotatable about an engine central axis and a vane fixedly disposed upstream of the disk, the vane being hollow and including a vane cavity, the vane cavity having a vane longitudinal span between a vane upstream opening and vane downstream opening, the vane including: a baffle fixedly supported within the vane cavity, the baffle having a hollow interior and having a baffle longitudinal span between a baffle upstream surface and a baffle downstream surface, the baffle longitudinal span being less than the vane longitudinal span to define a partial space eater baffle; wherein a baffle opening area fluidly connects the vane cavity to the baffle interior, and the baffle opening area is between 5.0×10??5 square inches and 1.5×10??3 square inches.
    Type: Application
    Filed: May 30, 2017
    Publication date: December 6, 2018
    Inventors: Brandon W. Spangler, Atul Kohli
  • Publication number: 20180340426
    Abstract: In one embodiment, a component for a gas turbine engine is provided. The component including: an airfoil having a tip portion; a tip shelf located in the tip portion; a first plurality of cooling openings located in an edge of the tip shelf that extends along at least a portion of a pressure side of the airfoil; and a second plurality of cooling openings located in an edge of the tip portion proximate to the tip shelf that extends along at least a portion of a pressure side of the tip portion.
    Type: Application
    Filed: May 25, 2017
    Publication date: November 29, 2018
    Inventors: Dominic J. Mongillo, Wolfgang Balzer, Atul Kohli
  • Publication number: 20180283687
    Abstract: A combustor for a gas turbine engine includes a combustor shell having a shell opening therethrough, a combustor panel having a stud attached thereto, the stud extending through the shell opening. The stud includes a standoff to define an intermediate passage between the combustor shell and the combustor panel. A retainer is attached to the stud. A washer surrounds the stud and is positioned between the retainer and the combustor shell. The washer at least partially defines a cooling flow passage configured to direct a cooling airflow through the shell opening to impinge the cooling flow on at least one of the stud or the standoff.
    Type: Application
    Filed: March 31, 2017
    Publication date: October 4, 2018
    Inventors: Tracy A. Propheter-Hinckley, Mark F. Zelesky, Atul Kohli, Dustin W. Davis, Ricardo Trindade, Steven Bruce Gautschi, Brandon W. Spangler, Trevor Rudy, Benjamin Bellows, Dave J. Hyland, James B. Hoke, Stephen K. Kramer, Dennis M. Moura
  • Publication number: 20180073369
    Abstract: An airfoil for a gas turbine engine includes pressure and suction side walls joined to one another at leading and trailing edges to provide an exterior airfoil surface. The pressure and suction side walls are spaced apart from one another in a thickness direction. A stagnation line is located near the leading edge. A cooling passage is provided between the pressure and suction side walls. The showerhead cooling holes are arranged at least one of adjacent to or on the stagnation line. At least one of the showerhead cooling holes has a metering hole fluidly connecting the cooling passage to a diffuser arranged at the exterior airfoil surface. At least one showerhead cooling hole is arranged on each of opposing sides of the stagnation line. Each showerhead cooling hole has the diffuser with a first diffuser angle that expands downstream in the thickness direction in opposing directions from one another when separated by the stagnation line.
    Type: Application
    Filed: September 15, 2016
    Publication date: March 15, 2018
    Inventors: Scott D. Lewis, Dominic J. Mongillo, Atul Kohli
  • Publication number: 20170234151
    Abstract: An engine component assembly includes at least one cavity that is in communication with a source of cooling air. An insert disposed within the cavity includes a plurality of scoops protruding into a flow of cooling air for directing cooling air through the insert and against an inner surface of the cavity.
    Type: Application
    Filed: January 28, 2015
    Publication date: August 17, 2017
    Inventors: Brandon W. Spangler, Atul Kohli
  • Publication number: 20170159456
    Abstract: A component of a gas turbine engine having: an internal cooling cavity; a baffle insert configured to be inserted into the internal cooling cavity; a plurality of trip strips extending upwardly from an exterior surface of the baffle insert; at least one separating feature located between a pair of ends of a pair of the plurality of trip strips, wherein the plurality of trip strips and the at least one separating feature are spaced from an interior surface of the internal cooling cavity; a plurality of trip strips extending upwardly from the interior surface; and at least one separating feature located between a pair of ends of the plurality of trip strips located on the interior surface of the internal cooling cavity, wherein the plurality of trip strips and the at least one separating feature of the interior surface are spaced from the exterior surface of the baffle insert.
    Type: Application
    Filed: December 7, 2015
    Publication date: June 8, 2017
    Inventors: Brandon W. Spangler, Atul Kohli
  • Publication number: 20170159454
    Abstract: A component of a gas turbine engine, the component having: an internal cooling cavity extending through an interior of the component; a baffle insert configured to be inserted into the internal cooling cavity; a plurality of trip strips extending upwardly from an exterior surface of the baffle insert; and at least one rib extending upwardly from the exterior surface of the baffle insert, wherein the plurality of trip strips and the at least one rib are spaced from an interior surface of the internal cooling cavity.
    Type: Application
    Filed: December 7, 2015
    Publication date: June 8, 2017
    Inventors: Brandon W. Spangler, Atul Kohli
  • Publication number: 20170159455
    Abstract: A baffle insert for a component of a gas turbine engine is provided. The baffle insert having: a plurality of trip strips extending upwardly from an exterior surface of the baffle insert; and at least one rib extending upwardly from the exterior surface of the baffle insert.
    Type: Application
    Filed: December 7, 2015
    Publication date: June 8, 2017
    Inventors: Brandon W. Spangler, Atul Kohli
  • Publication number: 20170159567
    Abstract: A method of increasing a heat transfer of a cooling fluid passing through a component of a gas turbine engine. The method including the steps of: directing a cooling fluid between an interior surface of an internal cooling cavity of the component and an exterior surface of a baffle insert located in the internal cooling cavity; and creating a plurality of vortices in the cooling fluid as it passes between the exterior surface of the baffle insert and the interior surface of the internal cooling cavity, wherein the internal cooling cavity is elliptical in shape.
    Type: Application
    Filed: December 7, 2015
    Publication date: June 8, 2017
    Inventors: Brandon W. Spangler, Atul Kohli
  • Publication number: 20170152751
    Abstract: A gas path component for a gas turbine engine includes an element configured to be exposed to a gas path. The element includes a plurality of internal cooling passages. At least one of the internal cooling passages includes a cross section having a plurality of asymmetrical filleted corners.
    Type: Application
    Filed: December 1, 2015
    Publication date: June 1, 2017
    Inventors: Brandon W. Spangler, Atul Kohli
  • Publication number: 20170022839
    Abstract: An array of components in a gas turbine engine includes first and second structures respectively including first and second surfaces that are arranged adjacent to one another to provide a gap. The first and second surfaces respectively have first and second rounded edges at the gap that are arranged in staggered relationship relative to one another.
    Type: Application
    Filed: November 13, 2014
    Publication date: January 26, 2017
    Inventors: Scott D. Lewis, Atul Kohli, Thomas J. Praisner
  • Patent number: 9482100
    Abstract: A gas turbine engine component subjected to a flow of high temperature gas includes a wall having first and second wall surfaces and a cooling hole extending through the wall. The cooling hole includes an inlet located at the first wall surface, an outlet located at the second wall surface, a metering section extending downstream from the inlet and a diffusing section extending from the metering section to the outlet. The diffusing section includes a first lobe, a second lobe and a transition region. The first lobe diverges longitudinally and laterally from the metering section and has a first shape. The second lobe is generally opposite the first lobe and diverges longitudinally and laterally from the metering section and has a second shape different from the first shape. The transition region is positioned between the first and second lobes and includes a downstream end adjacent the outlet.
    Type: Grant
    Filed: September 28, 2012
    Date of Patent: November 1, 2016
    Assignee: United Technologies Corporation
    Inventors: Atul Kohli, Matthew S. Gleiner
  • Publication number: 20160222794
    Abstract: This disclosure relates to a gas turbine engine including a component having a leading edge, a pressure side and a suction side opposite the pressure side. The component includes a first group of showerhead holes in the leading edge and a second group of showerhead holes in one of the pressure side and the suction side. The component further includes a first core passageway and a second core passageway separate from the first core passageway. The first core passageway and the second core passageway are in communication with a respective one of the first group of showerhead holes and the second group of showerhead holes.
    Type: Application
    Filed: September 9, 2014
    Publication date: August 4, 2016
    Inventors: Thomas N. Slavens, Mark F. Zelesky, Atul Kohli, Sean D. Bradshaw, Steven Bruce Gautschi
  • Publication number: 20160208619
    Abstract: An airfoil is provided. The airfoil may comprise a cross over, an impingement chamber in fluid communication with the cross over, and a first trip strip disposed on a first surface of the impingement chamber. A cooling system is also provided. The cooling system may comprise an impingement chamber, a first trip strip on a first surface of the impingement chamber, and a second trip strip on a second surface of the impingement chamber. An internally cooled engine part is further provided. The internally cooled part may comprise a cross over and an impingement chamber in fluid communication with the cross over. The cross over may be configured to direct air towards a first surface of the impingement chamber. A first trip strip may be disposed on the first surface of the impingement chamber.
    Type: Application
    Filed: January 21, 2015
    Publication date: July 21, 2016
    Applicant: United Technologies Corporation
    Inventors: San Quach, Atul Kohli, Matthew A. Devore, Steven Bruce Gautschi
  • Patent number: 9273560
    Abstract: A component for a gas turbine engine includes a wall and a cooling hole extending through the wall. The wall has a first surface and a second surface. The cooling hole includes a metering section extending downstream from an inlet in the first surface of the wall and a diffusion section extending from the metering section to an outlet in the second surface of the wall. The diffusion section includes a first plurality of lobes diverging longitudinally and laterally from the metering section on a first side of a centerline axis of the cooling hole and a second plurality of lobes diverging longitudinally and laterally from the metering section on a second side of the centerline axis.
    Type: Grant
    Filed: July 9, 2012
    Date of Patent: March 1, 2016
    Assignee: United Technologies Corporation
    Inventors: Matthew S. Gleiner, Mark F. Zelesky, Atul Kohli