Beverly J Duncan

US Patent:

6389815, May 21, 2002

Filed:

Sep 8, 2000

Appl. No.:

09/658872

Inventors:

Harjit Singh Hura - Cincinnati OH
Paul Edward Sabla - Cincinnati OH
James Neil Cooper - Hamilton OH
Beverly Stephenson Duncan - West Chester OH
Hukam Chand Mongia - West Chester OH
Steven Joseph Lohmueller - Reading OH

Assignee:

General Electric Company - Schenectady NY

International Classification:

F02C 722

US Classification:

60746, 60748

Abstract:

A two-stage fuel nozzle assembly for a gas turbine engine. The primary combustion region is centrally positioned and includes a fuel injector that is surrounded by one or more swirl chambers to provide a fuel air mixture that is ignited to define a first stage combustion zone. A secondary combustion region is provided by an annular housing that surrounds the primary combustion region, and it includes a secondary fuel injector having a radially outwardly directed opening and surrounded by an annular ring that includes openings for providing a swirl chamber for the secondary combustion region. Cooling air is directed angularly between the primary and secondary combustion zones to delay intermixing and thereby allow more complete combustion of the respective zones prior to their coalescing further downstream. The primary combustion region is activated during idle and low engine power conditions and both the primary and secondary combustion regions are activated during high engine power conditions.

US Patent:

8555645, Oct 15, 2013

Filed:

Jul 21, 2008

Appl. No.:

12/176898

Inventors:

Beverly Stephenson Duncan - West Chester OH, US
Michael Anthony Benjamin - Cincinnati OH, US
George Chia-Chun Hsiao - West Chester OH, US
Hukam Chand Mongia - West Chester OH, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

F02C 7/22

US Classification:

60737, 60740

Abstract:

A fuel nozzle centerbody is provided that includes a cylindrical cross-sectional area, and a baffle co-axially aligned within the centerbody. The baffle includes a plurality of circumferentially-spaced apertures configured to channel an airflow radially outward such that the channeled airflow impinges a centerbody inner surface.