Airfoil shape and sidewall flowpath surfaces for a turbine nozzle
First Claim
1. A turbine nozzle having a pressure side airfoil surface, said pressure side airfoil surface having a nominal profile substantially in accordance with Cartesian coordinate values of X, Y and Z set forth in inches in Table I, wherein the Z values are drop dimensions from a reference point origin on an outside diameter flowpath along a nozzle airfoil stacking axis perpendicular to a centerline axis of rotation of the turbine;
- and wherein the X and Y values, when connected by smooth continuing arcs, define pressure side airfoil surface profile sections at each distance Z from said origin, the profile sections at the Z distances being joined smoothly with one another to form a pressure side airfoil surface shape.
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Accused Products
Abstract
A turbine nozzle includes airfoil and sidewall surfaces. The airfoil and sidewall surfaces have profiles substantially in accordance with Cartesian coordinate values of X, Y and Z set forth in Tables I–IV for the pressure and suction sides of the airfoil, and the outer and inner sidewall surfaces, respectively. The X, Y and Z values are distances in inches. The X and Y values for the airfoil, when connected by smooth continuing arcs, define airfoil profile sections at each distance Z. The profile sections at the Z distances are joined smoothly with one another to form a complete airfoil shape. The X, Y and Z values of Tables III and IV define the outer and inner sidewall surfaces, respectively, of the gas flowpath.
59 Citations
26 Claims
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1. A turbine nozzle having a pressure side airfoil surface, said pressure side airfoil surface having a nominal profile substantially in accordance with Cartesian coordinate values of X, Y and Z set forth in inches in Table I, wherein the Z values are drop dimensions from a reference point origin on an outside diameter flowpath along a nozzle airfoil stacking axis perpendicular to a centerline axis of rotation of the turbine;
- and wherein the X and Y values, when connected by smooth continuing arcs, define pressure side airfoil surface profile sections at each distance Z from said origin, the profile sections at the Z distances being joined smoothly with one another to form a pressure side airfoil surface shape.
- View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A turbine nozzle having a suction side airfoil surface, said suction side airfoil surface having a nominal profile substantially in accordance with Cartesian coordinate values of X, Y and Z set forth in inches in Table II, wherein the Z values are drop dimensions from a reference point origin on an outside diameter flowpath along a nozzle airfoil stacking axis perpendicular to a centerline axis of rotation of the turbine;
- and wherein the X and Y values, when connected by smooth continuing arcs, define suction side airfoil surface profile sections at each distance Z from said origin, the profile sections at the Z distances being joined smoothly with one another to form a suction side airfoil surface shape.
- View Dependent Claims (9, 10, 11, 12, 13)
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14. A turbine nozzle having an outer sidewall surface, said outer sidewall surface having a nominal profile substantially in accordance with Cartesian coordinate values of X, Y and Z set forth in inches in Table III, wherein the Z values are drop dimensions from a reference point origin on an outside diameter flowpath along a nozzle airfoil stacking axis perpendicular to a centerline axis of rotation of the turbine;
- and wherein the X and Y values, when connected by, smooth continuing arcs at each distance Z, define an outer sidewall surface shape.
- View Dependent Claims (15, 16, 17, 18)
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19. A turbine nozzle having an inner sidewall surface, said inner sidewall surface having a nominal profile substantially in accordance with Cartesian coordinate values of X, Y and Z set forth in inches in Table IV, wherein the Z values are drop dimensions from a reference point origin on an outside diameter flowpath along a nozzle airfoil stacking axis perpendicular to a centerline axis of rotation of the turbine;
- and wherein the X and Y values, when connected by smooth continuing arcs at each distance Z, define an inner sidewall surface shape.
- View Dependent Claims (20, 21, 22)
- 23. A turbine comprising a turbine nozzle having a plurality of airfoils having an airfoil shape, each said airfoil having pressure and suction side airfoil surfaces defining a nominal airfoil profile substantially in accordance with Cartesian coordinate values of X, Y and Z set forth in Tables I and II, wherein the Z values are drop dimensions from a reference point origin on an outside diameter flowpath along a nozzle airfoil stacking axis perpendicular to a centerline axis of rotation of the turbine, and wherein the X and Y values, when connected by smooth continuing arcs, define airfoil profile sections at each distance Z, the profile sections at the Z distances being joined smoothly with one another to form an airfoil shape.
Specification