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Methods and systems to enhance flame holding in a gas turbine engine

United States Patent

8,104,286
January 31, 2012
View the Complete Patent at the US Patent & Trademark Office
A fuel nozzle including a swirler assembly that includes a shroud, a hub, and a plurality of vanes extending between the shroud and the hub. Each vane includes a pressure sidewall and an opposite suction sidewall coupled to the pressure sidewall at a leading edge and at a trailing edge. At least one suction side fuel injection orifice is formed adjacent to the leading edge and extends from a first fuel supply passage to the suction sidewall. A fuel injection angle is oriented with respect to the suction sidewall. The suction side fuel injection orifice is configured to discharge fuel outward from the suction sidewall. At least one pressure side fuel injection orifice extends from a second fuel supply passage to the pressure sidewall and is substantially parallel to the trailing edge. The pressure side fuel injection orifice is configured to discharge fuel tangentially from the trailing edge.
Zuo; Baifang (Simpsonville, SC), Lacy; Benjamin Paul (Greer, SC), Stevenson; Christian Xavier (Inman, SC)
General Electric Company (Schenectady, NY)
12/ 350,134
January 7, 2009
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH & DEVELOPMENT This invention was made with Government support under DE-FC26-05NT42643 awarded by the Department of Energy ("DOE"). The Government has certain rights in this invention.