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Turbine and method for reducing shock losses in a turbine

United States Patent

9,121,285
September 1, 2015
View the Complete Patent at the US Patent & Trademark Office
A turbine includes a rotor and a casing that circumferentially surrounds at least a portion of the rotor. The rotor and the casing at least partially define a gas path through the turbine. A last stage of rotating blades is circumferentially arranged around the rotor and includes a downstream swept portion radially outward from the rotor. A method for reducing shock losses in a turbine includes removing a last stage of rotating blades circumferentially arranged around a rotor and replacing the last stage of rotating blades with rotating blades having a downstream swept portion radially outward from the rotor.
Ristau; Neil (Simpsonville, SC)
GENERAL ELECTRIC COMPANY (Schenectady, NY)
13/ 479,935
20130315726
May 24, 2012
FEDERAL RESEARCH STATEMENT This invention was made with Government support under Contract No. DE-FC26-05NT42643, awarded by the Department of Energy. The Government has certain rights in the invention.