The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 23, 1999
Filed:
Oct. 09, 1997
Applicant:
Inventors:
Charles B Graves, Jupiter, FL (US);
Clifford E Smith, Madison, AL (US);
Assignee:
United Technologies Corporation, Hartford, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F23R / ;
U.S. Cl.
CPC ...
60748 ; 60746 ;
Abstract
The fuel nozzle is configured with a fuel injector with a pair of coaxially mounted air swirlers utilized in an annular combustor of a gas turbine engine that is dimensioned to provide 70-90 percent of the mass airflow in the inner passage and the swirl angle of the inner swirler is 45.degree.-55.degree. and the outer swirler is 70.degree. and the L/D of the combustion hole location relative to the fuel injector is 0.6-0.7 which serve to produce an outer shear layer flame for improved lean blowout characteristics.