TURBINE AIRFOIL COOLING SYSTEM WITH INTEGRATED AIRFOIL AND PLATFORM COOLING SYSTEM
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United States of America Patent
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app pub date -
Jan 28, 2015
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Jan 28, 2015
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Abstract
A cooling system (10) for a turbine airfoil (12) of a turbine engine having one or more mid-chord cooling channels (16) that extend through both the airfoil (32) and a platform (18) of the airfoil (12) to provide adequate cooling the platform (18) while cooling the airfoil (32) is disclosed. The mid-chord cooling channel (16) may be formed from an airfoil portion (20) extending generally spanwise within the airfoil (32) and a platform portion (22) extending into a platform (18) of the airfoil (12) with a larger cross-sectional area than a cross-sectional area of the airfoil portion (20). The mid-chord cooling channel (16) may also extend into the platform (18) of the airfoil (12) a distance laterally outside of a silhouette (60) of the airfoil (32) defined by the leading edge (24), trailing edge (26), pressure side (28) and suction side (30) of the airfoil (32). Thus, the mid-chord cooling channel (16) extends laterally into the platform (18) to provide adequate cooling the platform (18).
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