TIMOTHY P MCCAFFREY
Engineering in Swampscott, MA
License number
Massachusetts 32250
Issued Date
May 24, 1985
Expiration Date
Jun 30, 2018
Type
Mechanical Engineer
Address
Address
Swampscott, MA 01907
Professional information
Apparatus For Reducing Heat Load In Combustor Panels
US Patent:
6438958, Aug 27, 2002
Filed:
Feb 28, 2000
Appl. No.:
09/513943
Inventors:
Timothy P. McCaffrey - Swampscott MA
Frank A. Lastrina - Andover MA
Joseph D. Monty - Boxford MA
David E. Hrencecin - Peabody MA
Frank A. Lastrina - Andover MA
Joseph D. Monty - Boxford MA
David E. Hrencecin - Peabody MA
Assignee:
General Electric Company - Schenectady NY
International Classification:
F23R 300
US Classification:
60752, 60756
Abstract:
A combustor liner has a stepped combustor liner surface defining a combustion zone and an overhang portion forming an air cooling slot. A layer of thermal barrier material is applied to the combustor liner such that at least one portion of the combustor liner receives a layer of thermal barrier material with a thickness greater than 0. 01 inches. Thus, the combustor liner absorbs less heat, and the combustor may operate at higher temperatures. As a result, low cycle fatigue and thermal creep are reduced within the combustor and the life cycle for the combustor is extended.
Coating Systems For Protection Of Substrates Exposed To Hot And Harsh Environments And Coated Articles
US Patent:
2011015, Jun 23, 2011
Filed:
Mar 31, 2010
Appl. No.:
12/751667
Inventors:
Bangalore Nagaraj - West Chester OH, US
Terry Lee Few - Cincinnati OH, US
Timothy P. McCaffrey - Swampscott MA, US
Brian P. L'Heureux - Melrose MA, US
Terry Lee Few - Cincinnati OH, US
Timothy P. McCaffrey - Swampscott MA, US
Brian P. L'Heureux - Melrose MA, US
International Classification:
B32B 7/02, B32B 9/04, B32B 5/00
US Classification:
428215, 428697, 428334
Abstract:
Coating system for reducing CMAS infiltration of substrates includes at least an inner ceramic layer and an outer alumina-containing layer. The outer layer includes up to 50 percent by weight titania. Additional ceramic layers and alumina-containing layers may be provided. The coating may be used for gas turbine engine components. Deposition techniques for the coating layers may depend on the end use of the component. Coated articles include a substrate, an optional bond coat on the substrate and a coating over the bond coat or on at least a portion of the substrate in the absence of a bond coat. The inner ceramic layer(s) exhibit a microstructure indicative of a deposition technique selected from thermal spray, physical vapor deposition, and suspension plasma spray, whereas the outer alumina-containing layer exhibits a microstructure indicative of suspension plasma spray, solution plasma spray, and a high velocity oxygen fuel spray.
Methods For Assembling Gas Turbine Engine Combustors
US Patent:
7721437, May 25, 2010
Filed:
Dec 6, 2007
Appl. No.:
11/951765
Inventors:
Stephen John Howell - West Newbury MA, US
John Carl Jacobson - Melrose MA, US
Timothy P. McCaffrey - Swampscott MA, US
Barry Francis Barnes - Malden MA, US
John Carl Jacobson - Melrose MA, US
Timothy P. McCaffrey - Swampscott MA, US
Barry Francis Barnes - Malden MA, US
Assignee:
General Electric Company - Schenectady NY
International Classification:
B21K 25/00
US Classification:
2988922, 298892, 60748
Abstract:
A method facilitates assembling a combustor for a gas turbine engine, wherein the combustor includes a swirler assembly. The method comprises machining material to form a domeplate, positioning a sealplate including an overhanging portion against the domeplate, securing the sealplate in position relative to the domeplate with a welding process, and welding the swirler assembly to the domeplate.
Sector Staging Combustor
US Patent:
6968699, Nov 29, 2005
Filed:
May 8, 2003
Appl. No.:
10/431924
Inventors:
Stephen John Howell - West Newbury MA, US
John Carl Jacobson - Melrose MA, US
Timothy Patrick McCaffrey - Swampscott MA, US
Barry Francis Barnes - Malden MA, US
John Carl Jacobson - Melrose MA, US
Timothy Patrick McCaffrey - Swampscott MA, US
Barry Francis Barnes - Malden MA, US
Assignee:
General Electric Company - Schenectady NY
International Classification:
F02C007/26, F02C007/228, F02C009/26
US Classification:
60776, 60778, 60788, 60739, 60746
Abstract:
A combustor includes outer and inner liners joined together by a dome to define a combustion chamber. A row of air swirlers is mounted in the dome and includes corresponding main fuel injectors for producing corresponding fuel and air mixtures. Pilot fuel injectors fewer in number than the main injectors are mounted in the dome between corresponding ones of the swirlers. Staged fuel injection from the pilot and main injectors is used for starting the combustor during operation.
Methods And Apparatus For Operating Gas Turbine Engine Combustors
US Patent:
6955038, Oct 18, 2005
Filed:
Jul 2, 2003
Appl. No.:
10/613581
Inventors:
Timothy P. McCaffrey - Swampscott MA, US
Stephen John Howell - West Newbury MA, US
Walter J. Tingle - Danvers MA, US
Barry Francis Barnes - Milford CT, US
John Carl Jacobson - Melrose MA, US
Stephen John Howell - West Newbury MA, US
Walter J. Tingle - Danvers MA, US
Barry Francis Barnes - Milford CT, US
John Carl Jacobson - Melrose MA, US
Assignee:
General Electric Company - Schenectady NY
International Classification:
F02C007/18, F02C007/22
US Classification:
60 39094, 60 3983, 60740
Abstract:
A method facilitates assembling a gas turbine engine. The method comprises coupling a combustor including a dome assembly and a combustor liner that extends downstream from the dome assembly to a combustor casing that is positioned radially outwardly from the combustor, coupling a fuel injector including a fuel inlet and an air inlet to the combustor casing such that the fuel injector extends axially through the dome assembly such that fuel may be discharged from the primer nozzle into the combustor, and coupling the air inlet to an air source such that cooling air received therethrough is circulated through the fuel injector to facilitate cooling the fuel injector.
Methods And Apparatus For Operating Gas Turbine Engine Combustors
US Patent:
7448216, Nov 11, 2008
Filed:
Jul 5, 2006
Appl. No.:
11/428761
Inventors:
Timothy P. McCaffrey - Swampscott MA, US
Stephen John Howell - West Newbury MA, US
John Carl Jacobson - Melrose MA, US
Barry Francis Barnes - Malden MA, US
Stephen John Howell - West Newbury MA, US
John Carl Jacobson - Melrose MA, US
Barry Francis Barnes - Malden MA, US
Assignee:
General Electric Company - Schenectady NY
International Classification:
F02C 7/26
US Classification:
60772, 60 39826, 60 39094
Abstract:
A method facilitates assembling a gas turbine engine. The method comprises coupling a combustor including a dome assembly and a combustor liner that extends downstream from the dome assembly to a combustor casing that is positioned radially outwardly from the combustor, coupling a ring support that includes a first radial flange, a second radial flange, and a plurality of beams that extend therebetween to the combustor casing, and coupling a primer nozzle including an injection tip to the combustor such that the primer nozzle extends axially through the dome assembly such that fuel may be discharged from the primer nozzle into the combustor during engine start-up operating conditions.
Methods And Apparatus For Attaching Swirlers To Gas Turbine Engine Combustors
US Patent:
7310952, Dec 25, 2007
Filed:
Oct 17, 2003
Appl. No.:
10/688754
Inventors:
Stephen John Howell - West Newbury MA, US
John Carl Jacobson - Melrose MA, US
Timothy P. McCaffrey - Swampscott MA, US
Barry Francis Barnes - Malden MA, US
John Carl Jacobson - Melrose MA, US
Timothy P. McCaffrey - Swampscott MA, US
Barry Francis Barnes - Malden MA, US
Assignee:
General Electric Company - Schenectady NY
International Classification:
F23R 3/14
US Classification:
60796, 60748, 60752
Abstract:
A method facilitates assembling a combustor for a gas turbine engine, wherein the combustor includes a swirler assembly. The method comprises machining material to form a domeplate, positioning a sealplate including an overhanging portion against the domeplate, securing the sealplate in position relative to the domeplate with a welding process, and welding the swirler assembly to the domeplate.
Rabbet Mounted Combuster
US Patent:
7152411, Dec 26, 2006
Filed:
Jun 27, 2003
Appl. No.:
10/608609
Inventors:
Timothy Patrick McCaffrey - Swampscott MA, US
Barry Francis Barnes - Milford CT, US
Stephen John Howell - West Newbury MA, US
John Carl Jacobson - Melrose MA, US
Barry Francis Barnes - Milford CT, US
Stephen John Howell - West Newbury MA, US
John Carl Jacobson - Melrose MA, US
Assignee:
General Electric Company - Schenectady NY
International Classification:
F02C 7/20
US Classification:
60796, 60800
Abstract:
A combustor includes an outer wall and an inner liner joined to an inner shell in turn mounted to an inner casing. The casing includes a first rabbet at an end flange in which is mounted a corresponding flange of the inner shell. The inner shell also includes a second rabbet which receives an end flange of the inner liner. The inner shell is trapped in the first rabbet by an inner retainer. And, the inner liner is trapped in the surrounding second rabbet for aft-mounting the liner and shell to the inner casing.
Floating Liner Combustor
US Patent:
7093440, Aug 22, 2006
Filed:
Jun 11, 2003
Appl. No.:
10/458854
Inventors:
Stephen John Howell - West Newbury MA, US
Barry Francis Barnes - Milford CT, US
Timothy Patrick McCaffrey - Swampscott MA, US
John Carl Jacobson - Melrose MA, US
Barry Francis Barnes - Milford CT, US
Timothy Patrick McCaffrey - Swampscott MA, US
John Carl Jacobson - Melrose MA, US
Assignee:
General Electric Company - Schenectady NY
International Classification:
F02C 1/00, F02G 3/00
US Classification:
60752, 60800, 60804
Abstract:
An outer combustor wall () includes an outer support shell () surrounding an outer combustion liner (). The shell () includes a first radial aft flange (), and the liner () includes a second radial aft flange () axially adjoining the first flange. An annular retainer () and seal () are joined to the first flange for slidingly trapping the second flange therebetween for thermally floating the liner on the shell.
Methods And Apparatus For Operating Gas Turbine Engine Combustors
US Patent:
7093419, Aug 22, 2006
Filed:
Jul 2, 2003
Appl. No.:
10/613641
Inventors:
Timothy P. McCaffrey - Swampscott MA, US
Stephen John Howell - West Newbury MA, US
John Carl Jacobson - Melrose MA, US
Barry Francis Barnes - Malden MA, US
Stephen John Howell - West Newbury MA, US
John Carl Jacobson - Melrose MA, US
Barry Francis Barnes - Malden MA, US
Assignee:
General Electric Company - Schenectady NY
International Classification:
F02C 7/22, F02C 7/10, F02C 7/18
US Classification:
60 39094, 60798, 60 39511
Abstract:
A method facilitates assembling a gas turbine engine. The method comprises coupling a combustor including a dome assembly and a combustor liner that extends downstream from the dome assembly to a combustor casing that is positioned radially outwardly from the combustor, coupling a ring support that includes a first radial flange, a second radial flange, and a plurality of beams that extend therebetween to the combustor casing, and coupling a primer nozzle including an injection tip to the combustor such that the primer nozzle extends axially through the dome assembly such that fuel may be discharged from the primer nozzle into the combustor during engine start-up operating conditions.