Inlet guide vane
First Claim
1. An article of manufacture, at least a portion of the article comprising an airfoil having a nominal profile substantially in accordance with Cartesian coordinate values of x, y, and z set forth in TABLE 1 and a scaling factor, and wherein x and y are distances in inches, within a tolerance, which, when connected by smooth curves, 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 shape.
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Accused Products
Abstract
An inlet guide vane having a nominal profile substantially in accordance with Cartesian coordinate values of x, y, and z set forth in TABLE 1 reduces vibration of engine components at various operating conditions. A scaling factor can be applied to the values to make the airfoil larger or smaller. The TABLE 1 x and y values are distances in inches within a tolerance which, when connected by smooth curves, define airfoil profile sections at each distance z in inches, the profile sections being joined smoothly to form a complete airfoil shape. The tolerance in an embodiment is up to about 0.16 inches.
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Citations
17 Claims
- 1. An article of manufacture, at least a portion of the article comprising an airfoil having a nominal profile substantially in accordance with Cartesian coordinate values of x, y, and z set forth in TABLE 1 and a scaling factor, and wherein x and y are distances in inches, within a tolerance, which, when connected by smooth curves, 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 shape.
- 7. A gas turbine comprising an inlet having a plurality of articles of manufacture, each of said articles of manufacture 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 1 and a scaling factor, wherein x and y are distances in inches, within a tolerance, which, when connected by smooth curves, define the airfoil profile sections at each distance z in inches, the profile sections at the z distances being joined with one another with smooth surfaces to form a complete airfoil shape.
- 13. A gas turbine comprising an inlet having a plurality of articles of manufacture disposed therein, each of said articles of manufacture including an airfoil having an uncoated nominal airfoil profile substantially in accordance with Cartesian coordinate values of x, y, and z set forth in TABLE 1, wherein x and y are distances in inches, within a tolerance, which, when connected by smooth curves, define airfoil profile sections at each distance z in inches, the profile sections at the z distances being joined with one another with smooth surfaces to form a complete airfoil shape, the x and y distances being scalable as a function of a scaling factor to provide a scaled-up or scaled-down inlet guide vane airfoil.
Specification