Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Philip Richard Hirt0
Jeffrey John Butkiewicz0
Mark Steven Honkomp0
Date of Patent
January 30, 2007
Patent Application Number
10990961
Date Filed
November 18, 2004
Patent Primary Examiner
Patent abstract
The cooling system for the airfoil includes forward and aft cooling circuits supplied with a cooling medium. Both circuits include serpentine passages. A central rib divides the forward and aft cooling circuits and includes an opening adjacent the airfoil tip providing a jet of the cooling medium from the forward cooling circuit for impingement against the aft portion of the tip cap. The tip cap also includes a thermal barrier coating along an outside surface thereof as well as on the seat for the tip cap, thereby lowering the tip cap metal temperature and thermally induced stress.
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