Power plants – Combustion products used as motive fluid
Patent
1999-02-26
2000-11-21
Thorpe, Timothy S.
Power plants
Combustion products used as motive fluid
60 3936, F02C 306
Patent
active
061486000
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.
REFERENCES:
patent: 4979361 (1990-12-01), Clark et al.
patent: 5289687 (1994-03-01), Kress et al.
patent: 5924288 (1999-07-01), Fortuna et al.
patent: 5956955 (1999-09-01), Schmid
patent: 5974805 (1999-11-01), Allen
Dede Mehmet M.
Farmer Gilbert
Goreschen James A.
Houchens William T.
Gartenberg Ehud
General Electric Company
Hess Andrew C.
Thorpe Timothy S.
Young Rodney M.
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