AIRFOIL CORE SHAPE FOR A TURBINE NOZZLE

• US 20090324415A1
• Filed: 06/13/2008
• Published: 12/31/2009
• Est. Priority Date: 06/13/2008
• Status: Active Grant

• Current Assignee: GE Infrastructure Technology, LLC (General Electric Company)
• Original Assignee: General Electric Company
• Inventors: Benjamin, Edward Durell JR., Humanchuk, David John, Snook, Daniel David
• Granted Patent: US 8,057,169 B2
• Time in Patent Office: Days
• US Class Current: 416/223.00A
• CPC Class Codes: F01D 5/141 Shape, i.e. outer, aerodynamic form F01D5/148 - F01D5/20 take precedence; blade construction F01D5/147
• CPC Class Codes: F05D 2220/3212 the first stage of a turbine
• CPC Class Codes: F05D 2250/74 given by a set or table of xyz-coordinates
• CPC Class Codes: F05D 2260/202 by film cooling

Abstract

An article of manufacture includes an object having an airfoil core shape. The airfoil core shape has a nominal profile substantially in accordance with Cartesian coordinate values of X, Y, and Z set forth in TABLE 1 where X and Y are distances in inches which, when connected by smooth continuing arcs, define airfoil profile sections at each distance Z in inches. The profile sections at the Z distances are joined smoothly with one another to form a complete airfoil core shape.

Claims

1. An article of manufacture comprising:

an object having an airfoil core shape, the airfoil core shape having a nominal profile substantially in accordance with Cartesian coordinate values of X, Y, and Z set forth in TABLE 1, and wherein X and Y are distances in inches which, when connected by smooth continuing arcs, define airfoil profile sections at each distance Z in inches, the profile sections at the Z distances being joined smoothly with one another to form a complete airfoil core shape.

2. The article of manufacture according to claim 1, wherein the object comprises a core shape for a first stage turbine nozzle.

3. The article of manufacture according to claim 1, wherein the nominal profile lies within an envelope within 0.060 inches and −

0.060 inches in a direction normal to any of the airfoil profile sections.

4. The article of manufacture according to claim 1, wherein the object comprises an airfoil.

5. A turbine comprising:

at least one turbine stage including a plurality of articles of manufacture, each of the plurality of articles of manufacture including an airfoil core shape, the airfoil core shape having a nominal profile substantially in accordance with Cartesian coordinate values of X, Y, and Z set forth in TABLE 1, and wherein X and Y are distances in inches which, when connected by smooth continuing arcs, define airfoil profile sections at each distance Z in inches, the profile sections at the Z distances being joined smoothly with one another to form a complete airfoil core shape.

6. The turbine according to claim 5, wherein each of the articles of manufacture comprises a core shape for a first stage turbine nozzle.

7. The turbine according to claim 5, wherein the nominal profile lies within an envelope within 0.060 inches and −

0.060 inches in a direction normal to any of the airfoil profile sections.