Airfoil trailing edge cooling configuration
First Claim
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1. An airfoil having a pressure side wall and a suction side wall defining a forward region and a trailing edge region of said airfoil;
- said pressure side wall abutting said suction side wall in said trailing edge region of said airfoil;
a cavity for receiving cooling air formed between the inner surfaces of said pressure side wall and said suction side wall in said forward region of said airfoil;
a plurality of cooling air discharge slots formed in said pressure side wall in said trailing edge region of said airfoil; and
air flow metering and crossover means in said trailing edge region of said airfoil for passing cooling air from said cavity to said cooling air discharge slots;
said air flow metering and crossover means comprising a plurality of cooling air input channels each formed in the inner surface of said suction side wall and entering said cavity, a plurality of cooling air output channels each formed in the inner surface of said pressure side wall and coupled to one of said plurality of cooling air discharge slots, and a plurality of air passageways each formed in the inner surface of said suction side of said airfoil and coupling one of said plurality of cooling air input channels to a corresponding one of said plurality of cooling air output channels.
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Abstract
An airfoil includes a plurality of interior cooling air paths arranged so as to provide crossover metering and pressure side bleed of cooling air at the trailing edge region of the airfoil.
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Citations
6 Claims
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1. An airfoil having a pressure side wall and a suction side wall defining a forward region and a trailing edge region of said airfoil;
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said pressure side wall abutting said suction side wall in said trailing edge region of said airfoil; a cavity for receiving cooling air formed between the inner surfaces of said pressure side wall and said suction side wall in said forward region of said airfoil; a plurality of cooling air discharge slots formed in said pressure side wall in said trailing edge region of said airfoil; and air flow metering and crossover means in said trailing edge region of said airfoil for passing cooling air from said cavity to said cooling air discharge slots; said air flow metering and crossover means comprising a plurality of cooling air input channels each formed in the inner surface of said suction side wall and entering said cavity, a plurality of cooling air output channels each formed in the inner surface of said pressure side wall and coupled to one of said plurality of cooling air discharge slots, and a plurality of air passageways each formed in the inner surface of said suction side of said airfoil and coupling one of said plurality of cooling air input channels to a corresponding one of said plurality of cooling air output channels. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification