Patents by Inventor David S. Liscinsky
David S. Liscinsky 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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Patent number: 10400676Abstract: A fuel system for a gas turbine engine comprises an injector disposed to inject fuel and air into a combustor of the gas turbine engine. In a first embodiment, the fuel system further comprises an air separation module configured to supply oxygen-enriched air into the combustor via the injector for combustion. In a second embodiment, the fuel system further comprises a barbotage system and a heating element. The barbotage system is configured to feed hydrogen to the injector, and the heating element is configured to pre-heat the fuel.Type: GrantFiled: June 24, 2014Date of Patent: September 3, 2019Assignee: United Technologies CorporationInventors: Lubomir A. Ribarov, David S. Liscinsky, Meredith B. Colket
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Publication number: 20160369700Abstract: A fuel system for a gas turbine engine comprises an injector disposed to inject fuel and air into a combustor of the gas turbine engine. In a first embodiment, the fuel system further comprises an air separation module configured to supply oxygen-enriched air into the combustor via the injector for combustion. In a second embodiment, the fuel system further comprises a barbotage system and a heating element. The barbotage system is configured to feed hydrogen to the injector, and the heating element is configured to pre-heat the fuel.Type: ApplicationFiled: June 24, 2014Publication date: December 22, 2016Inventors: Lubomir A. Ribarov, David S. Liscinsky, Meredith B. Colket
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Patent number: 8683812Abstract: In an air mixing arrangement wherein a primary fluid is introduced through an opening in a wall to be mixed with a secondary fluid flowing along the wall surface, the opening is airfoil shaped with its leading edge being orientated at an attack angle with respect to the secondary fluid flow stream so as to thereby enhance the penetration and dispersion of the primary fluid stream into the secondary fluid stream. The airfoil shaped opening is selectively positioned such that its angle of attack provides the desired lift to optimize the mixing of the two streams for the particular application. In one embodiment, a collar is provided around the opening to prevent the secondary fluid from contacting the surface of the wall during certain conditions of operation. Multiple openings maybe used such as the combination of a larger airfoil shaped opening with a smaller airfoil shaped opened positioned downstream thereof, or a round shaped opening placed upstream of an airfoil shaped opening.Type: GrantFiled: April 27, 2011Date of Patent: April 1, 2014Assignee: United Technologies CorporationInventors: Fabio R. Bertolotti, David S. Liscinsky, Vincent C. Nardone, Michael K. Sahm, Bernd R. Noack, Daniel R. Sabatino
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Patent number: 8602772Abstract: A method is provided for commissioning a combustion control system for controlling operation of a boiler combustion system. The method includes the step of mapping a plurality of sets of coordinated servo positions for the fuel flow control device and the air flow control device at a plurality of selected firing rate points between a minimum firing rate and a maximum firing rate by using an algorithm and an iterative process to identify the coordinated air and fuel actuator positions instead of a trial and error method.Type: GrantFiled: February 20, 2008Date of Patent: December 10, 2013Assignee: UTC Fire & Security CorporationInventors: Junqiang Fan, Muhidin A. Lelic, Guido Poncia, David S. Liscinsky, Meredith B. Colket, III, Tom Kennedy
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Patent number: 8136342Abstract: In an air mixing arrangement wherein a primary fluid is introduced through an opening in a wall to be mixed with a secondary fluid flowing along the wall surface, the opening is airfoil shaped with its leading edge being orientated at an attack angle with respect to the secondary fluid flow stream so as to thereby enhance the penetration and dispersion of the primary fluid stream into the secondary fluid stream. The airfoil shaped opening is selectively positioned such that its angle of attack provides the desired lift to optimize the mixing of the two streams for the particular application. In one embodiment, a collar is provided around the opening to prevent the secondary fluid from contacting the surface of the wall during certain conditions of operation. Multiple openings maybe used such as the combination of a larger airfoil shaped opening with a smaller airfoil shaped opened positioned downstream thereof, or a round shaped opening placed upstream of an airfoil shaped opening.Type: GrantFiled: November 19, 2010Date of Patent: March 20, 2012Assignee: United Technologies CorporationInventors: Fabio R. Bertolotti, David S. Liscinsky, Vincent C. Nardone, Michael K. Sahm, Bernd R. Noack, Daniel R. Sabatino
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Patent number: 8015827Abstract: In an air mixing arrangement wherein a primary fluid is introduced through an opening in a wall to be mixed with a secondary fluid flowing along the wall surface, the opening is airfoil shaped with its leading edge being orientated at an attack angle with respect to the secondary fluid flow stream so as to thereby enhance the penetration and dispersion of the primary fluid stream into the secondary fluid stream. The airfoil shaped opening is selectively positioned such that its angle of attack provides the desired lift to optimize the mixing of the two streams for the particular application. In one embodiment, a collar is provided around the opening to prevent the secondary fluid from contacting the surface of the wall during certain conditions of operation. Multiple openings maybe used such as the combination of a larger airfoil shaped opening with a smaller airfoil shaped opened positioned downstream thereof, or a round shaped opening placed upstream of an airfoil shaped opening.Type: GrantFiled: June 20, 2008Date of Patent: September 13, 2011Assignee: United Technologies CorporationInventors: Fabio R. Bertolotti, David S. Liscinsky, Vincent C. Nardone, Daniel R. Sabatino, Michael K. Sahm, Bernd R. Noack
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Publication number: 20110204162Abstract: In an air mixing arrangement wherein a primary fluid is introduced through an opening in a wall to be mixed with a secondary fluid flowing along the wall surface, the opening is airfoil shaped with its leading edge being orientated at an attack angle with respect to the secondary fluid flow stream so as to thereby enhance the penetration and dispersion of the primary fluid stream into the secondary fluid stream. The airfoil shaped opening is selectively positioned such that its angle of attack provides the desired lift to optimize the mixing of the two streams for the particular application. In one embodiment, a collar is provided around the opening to prevent the secondary fluid from contacting the surface of the wall during certain conditions of operation. Multiple openings maybe used such as the combination of a larger airfoil shaped opening with a smaller airfoil shaped opened positioned downstream thereof, or a round shaped opening placed upstream of an airfoil shaped opening.Type: ApplicationFiled: April 27, 2011Publication date: August 25, 2011Applicant: United Technologies CorporationInventors: Fabio R. Bertolotti, David S. Liscinsky, Vincent C. Nardone, Michael K. Sahm, Bernd R. Noack, Daniel R. Sabatino
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Patent number: 7976213Abstract: In an air mixing arrangement wherein a primary fluid is introduced through an opening in a wall to be mixed with a secondary fluid flowing along the wall surface, the opening is airfoil shaped with its leading edge being orientated at an attack angle with respect to the secondary fluid flow stream to enhance penetration and dispersion of the primary fluid stream into the secondary fluid stream. The airfoil shaped opening is selectively positioned such that its angle of attack provides the desired lift to optimize the mixing of the two streams for the particular application. Embodiments of the arrangement can comprise a collar around the openings, multiple openings that comprise a larger opening and a smaller opening positioned downstream, pairs of openings and associated collars symmetric relationship, and nozzles on the inner side of the wall.Type: GrantFiled: June 20, 2008Date of Patent: July 12, 2011Assignee: United Technologies CorporationInventors: Fabio P. Bertolotti, David S. Liscinsky, Vincent C. Nardone, Michael K. Sahm, Bernd R. Noack, Daniel R. Sabatino
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Publication number: 20110162591Abstract: A method is provided for commissioning a combustion control system for controlling operation of a boiler combustion system. The method includes the step of mapping a plurality of sets of coordinated servo positions for the fuel flow control device and the air flow control device at a plurality of selected firing rate points between a minimum firing rate and a maximum firing rate by using an algorithm and an iterative process to identify the coordinated air and fuel actuator positions instead of a trial and error method.Type: ApplicationFiled: February 20, 2008Publication date: July 7, 2011Inventors: Jinqiang Fan, Muhidin A. Lelic, Guido Poncia, David S. Liscinsky, Meredith B. Colket, III, Tom Kennedy
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Publication number: 20110061362Abstract: In an air mixing arrangement wherein a primary fluid is introduced through an opening in a wall to be mixed with a secondary fluid flowing along the wall surface, the opening is airfoil shaped with its leading edge being orientated at an attack angle with respect to the secondary fluid flow stream so as to thereby enhance the penetration and dispersion of the primary fluid stream into the secondary fluid stream. The airfoil shaped opening is selectively positioned such that its angle of attack provides the desired lift to optimize the mixing of the two streams for the particular application. In one embodiment, a collar is provided around the opening to prevent the secondary fluid from contacting the surface of the wall during certain conditions of operation. Multiple openings maybe used such as the combination of a larger airfoil shaped opening with a smaller airfoil shaped opened positioned downstream thereof, or a round shaped opening placed upstream of an airfoil shaped opening.Type: ApplicationFiled: November 19, 2010Publication date: March 17, 2011Applicant: United Technologies CorporationInventors: Fabio R. Bertolotti, David S. Liscinsky, Vincent C. Nardone, Michael K. Sahm, Bernd R. Noack, Daniel R. Sabatino
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Publication number: 20090032615Abstract: In an air mixing arrangement wherein a primary fluid is introduced through an opening in a wall to be mixed with a secondary fluid flowing along the wall surface, the opening is airfoil shaped with its leading edge being orientated at an attack angle with respect to the secondary fluid flow stream so as to thereby enhance the penetration and dispersion of the primary fluid stream into the secondary fluid stream. The airfoil shaped opening is selectively positioned such that its angle of attack provides the desired lift to optimize the mixing of the two streams for the particular application. In one embodiment, a collar is provided around the opening to prevent the secondary fluid from contacting the surface of the wall during certain conditions of operation. Multiple openings maybe used such as the combination of a larger airfoil shaped opening with a smaller airfoil shaped opened positioned downstream thereof, or a round shaped opening placed upstream of an airfoil shaped opening.Type: ApplicationFiled: June 20, 2008Publication date: February 5, 2009Applicant: United Technologies CorporationInventors: Fabio P. Bertolotti, David S. Liscinsky, Vincent C. Nardone, Michael K. Sahm, Bernd R. Noack, Daniel R. Sabatino
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Publication number: 20080251128Abstract: In an air mixing arrangement wherein a primary fluid is introduced through an opening in a wall to be mixed with a secondary fluid flowing along the wall surface, the opening is airfoil shaped with its leading edge being orientated at an attack angle with respect to the secondary fluid flow stream so as to thereby enhance the penetration and dispersion of the primary fluid stream into the secondary fluid stream. The airfoil shaped opening is selectively positioned such that its angle of attack provides the desired lift to optimize the mixing of the two streams for the particular application. In one embodiment, a collar is provided around the opening to prevent the secondary fluid from contacting the surface of the wall during certain conditions of operation. Multiple openings maybe used such as the combination of a larger airfoil shaped opening with a smaller airfoil shaped opened positioned downstream thereof, or a round shaped opening placed upstream of an airfoil shaped opening.Type: ApplicationFiled: June 20, 2008Publication date: October 16, 2008Applicant: United Technologies CorporationInventors: Fabio R. Bertolotti, David S. Liscinsky, Vincent C. Nardone, Michael K. Sahm, Bernd R. Noack, Daniel R. Sabatino
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Patent number: 7415827Abstract: In an air mixing arrangement wherein a primary fluid is introduced through an opening in a wall to be mixed with a secondary fluid flowing along the wall surface, the opening is airfoil shaped with its leading edge being orientated at an attack angle with respect to the secondary fluid flow stream so as to thereby enhance the penetration and dispersion of the primary fluid stream into the secondary fluid stream. The airfoil shaped opening is selectively positioned such that its angle of attack provides the desired lift to optimize the mixing of the two streams for the particular application. In one embodiment, a collar is provided around the opening to prevent the secondary fluid from contacting the surface of the wall during certain conditions of operation. Multiple openings maybe used such as the combination of a larger airfoil shaped opening with a smaller airfoil shaped opened positioned downstream thereof, or a round shaped opening placed upstream of an airfoil shaped opening.Type: GrantFiled: May 18, 2005Date of Patent: August 26, 2008Assignee: United Technologies CorporationInventors: Fabio P. Bertolotti, David S. Liscinsky, Daniel R. Sabatino