Airfoil shape for a turbine rotor blade
A turbine rotor blade is provided including an airfoil having an airfoil shape. The airfoil shape having a nominal profile substantially in accordance with Cartesian coordinate values of X, Y and Z set forth in Table I wherein the Cartesian coordinate values of X, Y and Z are non-dimensional values from 0% to 100% convertible to dimensional distances in inches by multiplying the Cartesian coordinate values of X, Y and Z by a height of the airfoil in inches, and wherein X and Y are distances in inches which, when connected by smooth continuing arcs, define airfoil profile sections at each distance Z, the airfoil profile sections at Z distances being joined smoothly with one another to form a complete airfoil shape.
1. A turbine rotor blade including an airfoil having an airfoil shape, the airfoil having a nominal profile substantially in accordance with Cartesian coordinate values of X, Y and Z set forth in Table I, wherein the Cartesian coordinate values of X, Y and Z are non-dimensional values from 0% to 100% convertible to dimensional distances in inches by multiplying the Cartesian coordinate values of X, Y and Z by a height of the airfoil in inches, and wherein X and Y are distances in inches which, when connected by smooth continuing arcs, define airfoil profile sections at each distance Z, the airfoil profile sections at Z distances being joined smoothly with one another to form a complete airfoil shape.
2. The turbine rotor blade as in claim 1 , forming part of a stage of a turbine.
3. The turbine rotor blade as in claim 1 , wherein the turbine rotor blade forms a part of a third stage of turbine rotor blades of a turbine of a gas turbine.
4. The turbine rotor blade as in claim 1 , wherein the airfoil shape lies in an envelope within +/−5% in a direction normal to any airfoil surface location.
5. The turbine rotor blade as in claim 1 , wherein a height of the turbine rotor blade is 10 inches to 40 inches.
6. A turbine rotor blade including an airfoil having a suction-side uncoated nominal airfoil profile substantially in accordance with suction-side Cartesian coordinate values of X, Y and Z set forth in Table I, wherein the Cartesian coordinate values of X, Y and Z are non-dimensional values from 0% to 100% convertible to dimensional distances in inches by multiplying the Cartesian coordinate values of X, Y and Z by a height of the airfoil in inches, and wherein X and Y are distances in inches which, when connected by smooth continuing arcs, define airfoil profile sections at each Z distance, the airfoil profile sections at the Z distances being joined smoothly with one another to form a complete suction-side airfoil shape, the X, Y and Z distances being scalable as a function of the same constant or number to provide a scaled-up or scaled-down airfoil.
7. The turbine rotor blade as in claim 6 , forming part of a stage of a turbine.
8. The turbine rotor blade as in claim 6 , wherein the turbine rotor blade forms a part of a third stage of turbine rotor blades of a turbine of a gas turbine.
9. The turbine rotor blade as in claim 6 , wherein the suction-side airfoil shape lies in an envelope within +/−5% in a direction normal to any suction-side airfoil surface location.
10. The turbine rotor blade as in claim 6 , wherein a height of the turbine rotor blade is about 10 inches to about 40 inches.
11. A turbine comprising a turbine wheel having a plurality of turbine rotor blades, each of the turbine rotor blades including an airfoil having a suction-side airfoil shape, the airfoil having a nominal profile substantially in accordance with suction-side Cartesian coordinate values of X, Y and Z set forth in Table I wherein the Cartesian coordinate values of X, Y and Z are non-dimensional values from 0% to 100% convertible to dimensional distances by multiplying the Cartesian coordinate values of X, Y and Z by a height of the airfoil, and wherein X and Y are distances which, when connected by smooth continuing arcs, define airfoil profile sections at each Z distance, the airfoil profile sections at the Z distances being joined smoothly with one another to form a complete suction-side airfoil shape.
12. The turbine as in claim 11 , wherein the turbine wheel comprises a stage of the turbine.
13. The turbine as in claim 11 , wherein X represents a distance parallel to the turbine axis of rotation.
14. The turbine as in claim 11 , wherein the suction-side airfoil shape lies in an envelope within +/−5% in a direction normal to any suction-side airfoil surface location.
15. The turbine as in claim 11 , wherein a height of the turbine rotor blade is about 10 inches to about 40 inches.
16. The turbine as in claim 11 , wherein each of the turbine rotor blades includes an airfoil having a pressure-side airfoil shape, the airfoil having a nominal profile substantially in accordance with pressure-side Cartesian coordinate values of X, Y and Z set forth in Table I wherein the pressure-side Cartesian coordinate values of X, Y and Z are non-dimensional values from 0% to 100% convertible to dimensional distances by multiplying the pressure-side Cartesian coordinate values of X, Y and Z by a height of the airfoil, and wherein X and Y are distances which, when connected by smooth continuing arcs, define airfoil profile sections at each Z distance, the airfoil profile sections at Z distances being joined smoothly with one another to form a complete airfoil shape.
17. The turbine as in claim 16 , wherein the turbine rotor blade is a third stage turbine rotor blade.
18. The turbine as in claim 14 , wherein X represents a distance parallel to the turbine axis of rotation.
19. The turbine as in claim 16 , wherein the airfoil shape lies in an envelope within +/−5% in a direction normal to any airfoil surface location.
20. The turbine as in claim 16 , wherein a height of the turbine rotor blade is about 10 inches to about 40 inches.