Coolable turbine airfoil
First Claim
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1. A coolable airfoil structure, comprising:
- an airfoil shaped member having incorporated therein a hollow cavity and havinga leading edge including a plurality of leading edge holes disposed therein,a suction side wall including a plurality of suction side holes disposed therein,a pressure side wall including a plurality of pressure side holes disposed therein, anda span-wise extending rib which projects into the cavity from the suction side wall between the suction side holes and the pressure side holes;
a plate-like pressure side baffle disposed within the cavity and spaced closely apart from the pressure side wall forming a pressure side chamber between the pressure side baffle and the pressure side wall wherein cooling air is flowable through said chamber from the cavity to the pressure side holes and to the leading edge holes; and
a plate-like suction side baffle disposed within the cavity and spaced closely apart from the suction side wall forming a suction side chamber between the suction side baffle and the suction side wall wherein cooling air is flowable through said chamber from the cavity to the suction side holes, and wherein said pressure side baffle and said suction side baffle terminate at and are separated by said span-wise extending rib.
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Abstract
An airfoil cooling system for use in a gas turbine engine having high turbine inlet temperatures is disclosed. Various construction details designed to prevent thermal deterioration are developed. The system is built around impingement, film, and convective cooling techniques which are combined to limit the temperature of the airfoil material and to reduce thermal gradients within the component.
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Citations
10 Claims
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1. A coolable airfoil structure, comprising:
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an airfoil shaped member having incorporated therein a hollow cavity and having a leading edge including a plurality of leading edge holes disposed therein, a suction side wall including a plurality of suction side holes disposed therein, a pressure side wall including a plurality of pressure side holes disposed therein, and a span-wise extending rib which projects into the cavity from the suction side wall between the suction side holes and the pressure side holes; a plate-like pressure side baffle disposed within the cavity and spaced closely apart from the pressure side wall forming a pressure side chamber between the pressure side baffle and the pressure side wall wherein cooling air is flowable through said chamber from the cavity to the pressure side holes and to the leading edge holes; and a plate-like suction side baffle disposed within the cavity and spaced closely apart from the suction side wall forming a suction side chamber between the suction side baffle and the suction side wall wherein cooling air is flowable through said chamber from the cavity to the suction side holes, and wherein said pressure side baffle and said suction side baffle terminate at and are separated by said span-wise extending rib. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification