Patents by Inventor Bala Corattiyil
Bala Corattiyil 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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Publication number: 20180094543Abstract: An apparatus and system for injecting fluid into a boundary layer of a flow of fluid are provided. The boundary layer injection insert assembly includes an insert body and a central bore extending through the insert body from an inlet opening positioned at a first end to an outlet opening positioned at a second end of the insert body opposite the first end. The insert body is approximately cylindrical about a longitudinal axis and includes a thickness in a radial direction orthogonal to the longitudinal axis. The first end includes a plurality of injection holes extending through the thickness for a first distance, the first distance being less than the length. The boundary layer injection insert assembly also includes an annular spacer at least partially surrounding the second end and including a radially inner surface and a radially outer surface spaced apart by a thickness of the annular spacer.Type: ApplicationFiled: October 2, 2017Publication date: April 5, 2018Inventors: Ning Fang, Gary Paul Moscarino, Bala Corattiyil, Ramon Themudo, Prasad Laxman Kane, James Mathew Suding
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Patent number: 8915057Abstract: A sump pressurization system for a gas turbine engine comprises a first hollow shaft and a second hollow shaft disposed within the first hollow shaft and defining a cavity therebetween. Each of the first and second hollow shafts has a common axis of rotation. Also included is a source of pressurized air to pressurize the cavity and a plurality of hollow tubes disposed in the cavity. The tubes are oriented perpendicular to the axis of rotation and are connected to and rotatable with the first hollow shaft. A plurality of apertures in the second hollow shaft are in fluid communication with the tubes, such that pressurized air flowing through the tubes passes through the apertures into the interior of the second hollow shaft.Type: GrantFiled: February 9, 2013Date of Patent: December 23, 2014Assignee: General Electric CompanyInventors: Bala Corattiyil, Richard William Albrecht, Jr., Bradley W Fintel, Rebecca J. Schmidt, Scott Wolfer
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Publication number: 20140345246Abstract: A sump pressurization system for a gas turbine engine comprises a first hollow shaft and a second hollow shaft disposed within the first hollow shaft and defining a cavity therebetween. Each of the first and second hollow shafts has a common axis of rotation. Also included is a source of pressurized air to pressurize the cavity and a plurality of hollow tubes disposed in the cavity. The tubes are oriented perpendicular to the axis of rotation and are connected to and rotatable with the first hollow shaft. A plurality of apertures in the second hollow shaft are in fluid communication with the tubes, such that pressurized air flowing through the tubes passes through the apertures into the interior of the second hollow shaft.Type: ApplicationFiled: February 9, 2013Publication date: November 27, 2014Inventors: Bala Corattiyil, Richard William Albrecht, JR., Bradley W Fintel, Rebecca J. Schmidt, Scott Wolfer
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Publication number: 20130106061Abstract: A hydrodynamic sealing system for use in an oxidizing environment includes a rotor and a sealing stator. The stator includes a solid lubricant or a surface treatment and the rotor is hardened or the stator is hardened and the rotor includes the solid lubricant or the surface treatment. The stator is located proximate to the rotor to provide a seal. The stator and the rotor are robust at extreme temperatures above 700 degrees Fahrenheit (F) such that at least one of the stator and the rotor have a wear rate and a surface roughness sufficient to maintain an operating gap between the stator and rotor.Type: ApplicationFiled: October 28, 2011Publication date: May 2, 2013Applicant: GENERAL ELECTRIC COMPANYInventors: Eric RUGGIERO, Bala CORATTIYIL, Thomas Lowell STEEN
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Patent number: 8333551Abstract: A device operating in an environment includes a fiber optic sensing system having one or more fiber optic sensors disposed in the device and configured to detect one or more parameters related to the device. The parameters may include temperature, strain, pressure, vibration, or combinations thereof.Type: GrantFiled: September 28, 2007Date of Patent: December 18, 2012Assignee: General Electric CompanyInventors: Eric John Ruggiero, Kevin Thomas McCarthy, Christopher Edward Wolfe, Hua Xia, Bala Corattiyil, Kenneth Lee Fisher
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Patent number: 8314925Abstract: A fiber-optic based thrust load measurement system is coupled to a bearing housing. The measurement system includes at least one fiber optic sensor configured to detect one or more parameters related to the bearing housing. An optical coupler is configured to regulate light signals emitted from a light source and light signals reflected from the fiber optic sensor. A detector system is configured to receive light signals from the optical coupler. A processor is configured to receive an output from the detector system and to determine a thrust load on a thrust bearing based on the detected one or more parameters related to the bearing housing.Type: GrantFiled: October 30, 2009Date of Patent: November 20, 2012Assignee: General Electric CompanyInventors: Eric John Rubbiero, Bala Corattiyil, Frederic Gardner Haaser, Scott Francis Wolfer
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Patent number: 8092093Abstract: A rotating seal for a gas turbine engine includes: (a) an annular seal body; (b) a sealing component carried by the seal body which is adapted to form one-half of a rotating seal interface; and (c) an impeller carried by the seal body which comprises a plurality of radially-inwardly-extending impeller blades.Type: GrantFiled: July 31, 2008Date of Patent: January 10, 2012Assignee: General Electric CompanyInventors: Ning Fang, Ray Harris Kinnaird, Gary Paul Moscarino, Kenneth Lee Fisher, Jonothan Allen Scheetz, Dave William Pugh, Edward William Grace, Duane Howard Anstead, Bala Corattiyil, Prasad Laxman Kane
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Patent number: 7993425Abstract: The present invention provides a free vortex air-oil separator that may be used in systems for separating oil from air oil mixtures. The free vortex air-oil separator comprises a free vortex chamber having a first chamber wall, a second chamber wall located axially aft from the first chamber wall and a rim located in a radially outer region from an axis of rotation, a plurality of vent holes in the rim and a cavity formed by the first and second chamber walls, and the rim, wherein a free vortex is created when there is a flow into the cavity through the plurality of vent holes.Type: GrantFiled: November 28, 2007Date of Patent: August 9, 2011Assignee: General Electric CompanyInventors: Bala Corattiyil, Duane Howard Anstead, Mark Eden Zentgraf, Stephen Anthony Wilton, Ramon Themudo, Gary Paul Moscarino, Kenneth Lee Fisher
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Publication number: 20110102765Abstract: A fiber-optic based thrust load measurement system is coupled to a bearing housing. The measurement system includes at least one fiber optic sensor configured to detect one or more parameters related to the bearing housing. An optical coupler is configured to regulate light signals emitted from a light source and light signals reflected from the fiber optic sensor. A detector system is configured to receive light signals from the optical coupler. A processor is configured to receive an output from the detector system and to determine a thrust load on a thrust bearing based on the detected one or more parameters related to the bearing housing.Type: ApplicationFiled: October 30, 2009Publication date: May 5, 2011Applicant: GENERAL ELECTRIC COMPANYInventors: Eric John Ruggiero, Bala Corattiyil, Frederic Gardner Haaser, Scott Francis Wolfer
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Patent number: 7935164Abstract: The present invention provides a vortex generator that may be used in systems for separating oil from air oil mixtures. The vortex generator comprises a rotating disk having a rim having a plurality of passages extending through it and a cavity formed by the rotating disk and a cavity wall wherein a vortex is created when there is a flow through the plurality of passages into the cavity.Type: GrantFiled: November 28, 2007Date of Patent: May 3, 2011Assignee: General Electric CompanyInventors: Ning Fang, Duane Howard Anstead, Robert Proctor, Pradeep Hemant Sangli, Prasad Laxman Kane, Gary Paul Moscarino, Bala Corattiyil, Ray Harris Kinnaird, David William Pugh, Mark Eden Zentgraf
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Patent number: 7836675Abstract: An active air pressure control apparatus for a bearing sump cavity in a gas turbine engine includes a bearing assembly supporting a rotatable shaft that connects a rotatable power turbine and a rotatable compressor. The active air pressure control apparatus also includes a sump cavity surrounding the bearing assembly, a sump pressurization cavity in flow communication with a source of pressurized air and in flow communication with the sump cavity, and a sump vent tube in flow communication with the sump cavity and an air/oil separator. The active air pressure control apparatus includes an adjustable valve in the sump vent tube, and a controllable blower in flow communication with the sump vent tube.Type: GrantFiled: February 21, 2006Date of Patent: November 23, 2010Assignee: General Electric CompanyInventors: Bala Corattiyil, Stephen Eugene Melton
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Publication number: 20090133961Abstract: The present invention provides a free vortex air-oil separator that may be used in systems for separating oil from air oil mixtures. The free vortex air-oil separator comprises a free vortex chamber having a first chamber wall, a second chamber wall located axially aft from the first chamber wall and a rim located in a radially outer region from an axis of rotation, a plurality of vent holes in the rim and a cavity formed by the first and second chamber walls, and the rim, wherein a free vortex is created when there is a flow into the cavity through the plurality of vent holes.Type: ApplicationFiled: November 28, 2007Publication date: May 28, 2009Inventors: Bala Corattiyil, Duane Howard Anstead, Mark Eden Zentgraf, Stephen Anthony Wilton, Ramon Themudo, Gary Paul Moscarino, Kenneth Lee Fisher
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Publication number: 20090133581Abstract: The present invention provides a vortex generator that may be used in systems for separating oil from air oil mixtures. The vortex generator comprises a rotating disk having a rim having a plurality of passages extending through it and a cavity formed by the rotating disk and a cavity wall wherein a vortex is created when there is a flow through the plurality of passages into the cavity.Type: ApplicationFiled: November 28, 2007Publication date: May 28, 2009Inventors: Ning Fang, Duane Howard Anstead, Robert Proctor, Pradeep Hemant Sangli, Prasad Laxman Kane, Gary Paul Moscarino, Bala Corattiyil, Ray Harris Kinnaird, David William Pugh, Mark Eden Zentgraf
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Publication number: 20090087303Abstract: A device operating in an environment includes a fiber optic sensing system having one or more fiber optic sensors disposed in the device and configured to detect one or more parameters related to the device. The parameters may include temperature, strain, pressure, vibration, or combinations thereof.Type: ApplicationFiled: September 28, 2007Publication date: April 2, 2009Applicant: GENERAL ELECTRIC COMPANYInventors: Eric John Ruggiero, Kevin Thomas McCarthy, Christopher Edward Wolfe, Hua Xia, Bala Corattiyil, Kenneth Lee Fisher
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Publication number: 20070193276Abstract: Method and apparatus for controlling sump pressurization in a gas turbine bearing sump by controllably restricting or actively venting air flow from said sump cavity to maintain a continuous air flow from said sump cavity through a sump vent in all operating conditions.Type: ApplicationFiled: February 21, 2006Publication date: August 23, 2007Inventors: Bala Corattiyil, Stephen Melton
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Patent number: 6491497Abstract: A rotor assembly for a gas turbine engine includes a bearing assembly that reduces dynamic loads to a support frame and static bending to the rotor assembly during periods of rotor unbalance. The rotor assembly includes a rotor shaft coupled to a fan and supported longitudinally with a plurality of bearing assemblies on a support frame. A number two bearing assembly includes a paired race, a rolling element, and a mounting race. The mounting race includes a spherical face and is secured to the bearing assembly with a retainer that plastically fails at a pre-determined moment load.Type: GrantFiled: September 22, 2000Date of Patent: December 10, 2002Assignee: General Electric CompanyInventors: Barry Lynn Allmon, Christopher Charles Glynn, Kenneth Lee Fisher, Daniel Edward Mollmann, Bala Corattiyil, Randy Marinus Vondrell, Morris Green Penn, Michael Joseph Gambone, Jan Christopher Schilling
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Publication number: 20020127102Abstract: A rotor assembly for a gas turbine engine including a bearing centering sub-assembly that facilitates reduces an effect of radial forces transmitted to a bearing assembly is described. The bearing assembly supports a rotor shaft with a rolling element positioned radially inward from an outer race. The bearing centering sub-assembly is coupled to the outer race and includes a plurality of first springs and a plurality of second springs extending circumferentially in rows. Each first springs is coupled between a second spring and the outer race such that each first spring is radially aligned with respect to each second spring.Type: ApplicationFiled: January 26, 2001Publication date: September 12, 2002Inventors: Bala Corattiyil, Barry Lynn Allmon
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Patent number: 6443698Abstract: A rotor assembly for a gas turbine engine including a bearing centering sub-assembly that facilitates reduces an effect of radial forces transmitted to a bearing assembly is described. The bearing assembly supports a rotor shaft with a rolling element positioned radially inward from an outer race. The bearing centering sub-assembly is coupled to the outer race and includes a plurality of first springs and a plurality of second springs extending circumferentially in rows. Each first springs is coupled between a second spring and the outer race such that each first spring is radially aligned with respect to each second spring.Type: GrantFiled: January 26, 2001Date of Patent: September 3, 2002Assignee: General Electric CompanyInventors: Bala Corattiyil, Barry Lynn Allmon
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Patent number: 6413046Abstract: A rotor assembly for a gas turbine engine including a bearing centering sub-assembly that facilitates reduces radial forces transmitted to a bearing assembly is described. The bearing assembly supports a rotor shaft with a rolling element positioned radially inward from an outer race. The bearing centering sub-assembly is coupled to the outer race and includes a plurality of first springs and second springs arranged circumferentially in a row. Each first spring is positioned between adjacent second springs and coupled between the outer race and annular ring. Each second spring is coupled between a support frame and the annular ring.Type: GrantFiled: January 26, 2001Date of Patent: July 2, 2002Assignee: General Electric CompanyInventors: Morris Green Penn, Bala Corattiyil