Jairaj Ramachandran

50908650, Feb 25, 1992

Oct 22, 1990

7/600792

Jairaj Ramachandran - Cincinnati OH
John R. Hess - West Chester OH
Larry W. Plemmons - Fairfield OH

General Electric Company - Cincinnati OH

F01D 1100

415112

A windage shield for use with a pair of annular members oriented in an abutting end-to-end arrangement to define one boundary of a fluid flow path, each of the members having a radially extending flange at their respecting abutting ends for coupling the members to each other. The flanges are coupled by a plurality of circumferentially spaced bolts having a head and a nut which protrude into the fluid flow path. The windage shield comprises an annular ring having a first surface with a plurality of circumferentially spaced arcuate grooves formed therein. Each of the grooves is shaped to receive a preselected number of the bolt heads when the ring is positioned against a corresponding flange. A second surface of the ring opposite the first surface includes a plurality of apertures extending through the ring to the first surface with each of the apertures being located between a respective adjacent pair of the arcuate grooves. Each aperture has a countersunk portion on the second surface.

58392670, Nov 24, 1998

Mar 31, 1995

8/414696

Roger W. Schonewald - Scotia NY
Jairaj Ramachandran - Ballston Lake NY
George W. Scheper - Schenectady NY

General Electric Co. - Schenectady NY

F02C 600

60 3902

This invention relates to a new land based gas turbine in simple or combined cycle configuration, which permits a user to incorporate air or steam cooling of hot gas turbine parts with minimal change in components, and which also incorporates design changes enabling certain turbine components to be used without change in both 50 and 60 Hz turbines. The invention here specifically relates to parameter selection for the operating cycles of 50 and 60 Hz gas turbines with air or steam cooling, and in simple or combined cycle configuration. A method of operating a combined cycle, gas turbine broadly comprises the steps of compressing inlet air with a multi-stage compressor with a pressure ratio of about 23 to 1; directing substantially all of the air discharged from the compressor to a combustion system to produce gaseous products of combustion; directing the gaseous products of combustion through the turbine; and exhausting the gaseous products of combustion.