Patents by Inventor Sathyanarayanan Raghavan

Sathyanarayanan Raghavan 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: 10415579
    Abstract: Coating systems for components of a gas turbine engine, such as a compressor blade tip, are provided. The coating system can include a ceramic material disposed along the compressor blade tip and may be used with a bare compressor casing. The ceramic coating is harder than the bare compressor casing and can reduce the rub ratio thereby increasing the lifetime of the compressor blades. Methods are also provided for applying the coating system onto a compressor blade.
    Type: Grant
    Filed: September 28, 2016
    Date of Patent: September 17, 2019
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Neelesh Nandkumar Sarawate, Larry Steven Rosenzweig, Sathyanarayanan Raghavan, Changjie Sun, Ananda Barua, Jinjie Shi
  • Patent number: 10385865
    Abstract: An airfoil for use in a turbomachine includes a pressure sidewall and a suction sidewall coupled to the pressure sidewall. The suction sidewall and the pressure sidewall define a leading edge and an opposite trailing edge. The leading edge and the trailing edge define a chord distance. The airfoil further includes a root portion, and a tip portion. The tip portion extends between the pressure sidewall and the suction sidewall such that the tip portion is substantially perpendicular to each sidewall. The tip portion includes at least one planar section and at least one oblique section that forms a recess within the tip portion. The at least one oblique section extends from the at least one planar section towards the root portion along the chord distance. The tip portion is configured to reduce airfoil wear during contact with a surrounding casing.
    Type: Grant
    Filed: March 7, 2016
    Date of Patent: August 20, 2019
    Assignee: General Electric Company
    Inventors: Sathyanarayanan Raghavan, Neelesh Nandkumar Sarawate, Kenneth Martin Lewis, Changjie Sun, Ananda Barua
  • Publication number: 20190079491
    Abstract: According to some embodiments, an industrial asset item definition data store may contain at least one electronic record defining the industrial asset item. An automated support structure creation platform may include a support structure optimization computer processor. The automated support structure optimization computer processor may, for example, be adapted to automatically create support structure geometry data associated with an additive printing process for the industrial asset item. The creation may be performed, according to some embodiments, via an iterative loop between a build process simulation engine and a topology optimization engine.
    Type: Application
    Filed: September 12, 2017
    Publication date: March 14, 2019
    Inventors: Ananda BARUA, Sathyanarayanan RAGHAVAN, Arun Karthi SUBRAMANIYAN, Changjie SUN, Arvind RANGARAJAN
  • Publication number: 20180135638
    Abstract: Coating systems for components of a gas turbine engine, such as a compressor casing, are provided. The coating system can include a ceramic material disposed along the compressor casing on a surface to be adjacent to a rotating compressor blade. The coating system is harder than the compressor blade and can reduce the rub ratio between the casing and blade. The coating system can thereby increase the lifetime of the compressor casing and blades. Methods are also provided for applying the coating system onto a compressor casing.
    Type: Application
    Filed: November 16, 2016
    Publication date: May 17, 2018
    Inventors: Neelesh Nandkumar Sarawate, Luc Stephane Leblanc, Sathyanarayanan Raghavan, Changjie Sun, Ananda Barua
  • Publication number: 20180135646
    Abstract: Coating systems for components of a gas turbine engine, such as a compressor blade tip, are provided. The coating system can include an abradable material disposed along the compressor blade tip and may be used with a bare compressor casing. The abradable coating is softer than the compressor casing and can reduce the overall rub ratio thereby increasing the lifetime of the compressor blade and casing. Methods are also provided for applying the coating system onto a compressor blade.
    Type: Application
    Filed: November 16, 2016
    Publication date: May 17, 2018
    Inventors: Sathyanarayanan Raghavan, Neelesh Nandkumar Sarawate, Kenneth Martin Lewis, Larry Steven Rosenzweig, Changjie Sun, Ananda Barua
  • Publication number: 20180087515
    Abstract: Coating systems for components of a gas turbine engine, such as a compressor blade tip, are provided. The coating system can include a ceramic material disposed along the compressor blade tip and may be used with a bare compressor casing. The ceramic coating is harder than the bare compressor casing and can reduce the rub ratio thereby increasing the lifetime of the compressor blades. Methods are also provided for applying the coating system onto a compressor blade.
    Type: Application
    Filed: September 28, 2016
    Publication date: March 29, 2018
    Inventors: Neelesh Nandkumar Sarawate, Larry Steven Rosenzweig, Sathyanarayanan Raghavan, Changjie Sun, Ananda Barua, Jinjie Shi
  • Publication number: 20170254210
    Abstract: An airfoil for use in a turbomachine includes a pressure sidewall and a suction sidewall coupled to the pressure sidewall. The suction sidewall and the pressure sidewall define a leading edge and a trailing edge, the leading edge and the trailing edge define a chord distance. The airfoil includes a tip portion extending between the pressure sidewall and the suction sidewall. The tip portion includes a planar section and a recessed section. The recessed section extends adjacent to the planar section such that a thickness of the planar section is less than a thickness of the airfoil. The recessed section is offset a predetermined distance from the leading edge and the trailing edge along the chord distance.
    Type: Application
    Filed: March 7, 2016
    Publication date: September 7, 2017
    Inventors: Ananda Barua, Neelesh Nandkumar Sarawate, Kenneth Martin Lewis, Changjie Sun, Yu Xie Mukherjee, Sathyanarayanan Raghavan
  • Publication number: 20170254340
    Abstract: An airfoil for use in a turbomachine includes a pressure sidewall and a suction sidewall coupled to the pressure sidewall. The suction sidewall and the pressure sidewall define a leading edge and an opposite trailing edge. The leading edge and the trailing edge define a chord distance. The airfoil further includes a root portion, and a tip portion. The tip portion extends between the pressure sidewall and the suction sidewall such that the tip portion is substantially perpendicular to each sidewall. The tip portion includes at least one planar section and at least one oblique section that forms a recess within the tip portion. The at least one oblique section extends from the at least one planar section towards the root portion along the chord distance. The tip portion is configured to reduce airfoil wear during contact with a surrounding casing.
    Type: Application
    Filed: March 7, 2016
    Publication date: September 7, 2017
    Inventors: Sathyanarayanan Raghavan, Neelesh Nandkumar Sarawate, Kenneth Martin Lewis, Changjie Sun, Ananda Barua