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. 21, 2000
Filed:
Feb. 26, 1999
Gilbert Farmer, Cincinnati, OH (US);
Mehmet M Dede, West Chester, OH (US);
James A Goreschen, Hebron, KY (US);
William T Houchens, Cincinnati, OH (US);
General Electric Company, Cincinnati, OH (US);
Abstract
A one-piece cowl for use in assembled relationship with a combustor of a gas turbine engine, the cowl being of a generally annular configuration defining a central cowl axis and being axially elongated and aerodynamically contoured relative to the central cowl axis. The one-piece cowl includes an inner annular portion, an outer annular portion, and a plurality of circumferentially spaced radial ligaments connecting the inner and outer annular portions so as to form a corresponding number of openings through a middle portion of the cowl. Each radial ligament has a designated area which enables the radial ligaments to sustain the stress levels imposed on the cowl to prevent high cycle fatigue. Each opening also has a designated area which enables insertion of fuel nozzles therein without adversely affecting air flow therethrough. The designated area for the radial ligaments is a function of the designated area for the openings and a ratio of such areas falls within a specified range.