Stephen B Howell

US Patent:

6354085, Mar 12, 2002

Filed:

Jan 13, 2000

Appl. No.:

09/482665

Inventors:

Stephen J. Howell - Georgetown MA
Jennifer Waslo - Marblehead MA

Assignee:

General Electric Company - Cincinnati OH

International Classification:

F02C 722

US Classification:

60740, 60739, 60 39091, 239590

Abstract:

A fuel injector for use in a gas turbine engine includes an inlet stem with a bore formed therein and an insert disposed in the bore. The insert has a cavity formed therein for receiving a fuel filter. The use of the insert allows the upstream end of the inlet stem to be connected to a fuel manifold with a double seal fitting.

US Patent:

6735950, May 18, 2004

Filed:

Mar 31, 2000

Appl. No.:

09/540565

Inventors:

Stephen J. Howell - Georgetown MA
Jennifer Waslo - Marblehead MA
Robert G. Carita - Needham MA

Assignee:

General Electric Company - Schenectady NY

International Classification:

F23R 310

US Classification:

60748, 2989002, 60756

Abstract:

A method of making a dome plate for a gas turbine engine combustor includes forming an annular body and forming a plurality of swirler openings in the annular body. Then, an array of impingement cooling holes and an array of blow-off holes are electrically discharge machined into the annular body adjacent to each swirler opening. For each one of the plurality of swirler openings, the corresponding array of impingement cooling holes and the corresponding array of blow-off holes are machined in a single electrical discharge machining operation. This results in an annular dome plate having radially outer and inner curved corners that define a single radius of curvature. The blow-off holes are located in at least one of the outer and inner curved corners.

US Patent:

6952927, Oct 11, 2005

Filed:

May 29, 2003

Appl. No.:

10/447885

Inventors:

Stephen John Howell - West Newbury MA, US
John Carl Jacobson - Melrose MA, US
Timothy Patrick McCaffrey - Swampscott MA, US
Barry Francis Barnes - Milford CT, US
Thet Don Kwan - Peabody MA, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

F23R003/50

US Classification:

60798, 60804

Abstract:

A combustor baffle includes an annular splashplate having a center mounting tube therein for receiving a carbureted stream. A semi-ferrule is offset both laterally and transversely from the tube, and is open laterally outwardly therefrom. The semi-ferrule cooperates with an adjoining semi-ferrule for defining a port in which a pilot injector or igniter may be mounted.

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

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.

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

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.

US Patent:

7036316, May 2, 2006

Filed:

Oct 17, 2003

Appl. No.:

10/687683

Inventors:

Stephen John Howell - West Newbury MA, US
Allen Michael Danis - Mason OH, US

Assignee:

General Electric Company - Schenetady NY

International Classification:

F23R 3/04

US Classification:

60772, 60754, 60755

Abstract:

A method facilitates assembling a combustor for a gas turbine engine. The method comprises coupling an inner liner to an outer liner such that a combustion chamber is defined therebetween, positioning an outer support a distance radially outward from the outer liner, and positioning an inner support a distance radially inward from the inner liner. The method also comprises forming at least two rows of impingement openings extending through at least one of the inner support and the outer support for channeling impingement cooling air therethrough towards at least one of the inner liner and the outer liner, and forming at least one row of dilution openings extending through at least one of the inner liner and the outer liner for channeling dilution cooling air therethrough into the combustion chamber.

US Patent:

7051532, May 30, 2006

Filed:

Oct 17, 2003

Appl. No.:

10/688526

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

Assignee:

General Electric Company - Schenecady NY

International Classification:

F23R 3/02

US Classification:

60772, 60756, 60757

Abstract:

A method facilitates assembling a combustor for a gas turbine engine. The method includes providing a dome assembly that includes at least one cooling slot lip and at least one filler projection, wherein a gap defined between the cooling slot lip and the at least one filler projection has a height defined between cooling slot lip and the at least one filler projection that is substantially uniform through the gap. The method also includes coupling a liner assembly to the dome assembly, such that a combustion chamber is defined by the liner assembly, and coupling an inner and an outer support to the dome assembly, such that the dome assembly extends between the inner and outer supports.

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

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.