Cooling system for an airfoil
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United States of America Patent
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Jan 30, 2007
Issued Date -
N/A
app pub date -
Nov 18, 2004
filing date -
Nov 18, 2004
priority date (Note) -
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status (Latency Note)
Importance
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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