Unflared compressor blade
View Patent ↗A compressor component having an airfoil with a profile in accordance with Table 1 is disclosed. The compressor component, such as a compressor blade, has an increased thickness over a portion of the airfoil span in order to increase stiffness. Furthermore, the airfoil has been restacked so as to induce a compressive stress in the blade root/attachment area. The increased stiffness and restacked airfoil combine to improve high-cycle fatigue capability of the compressor component.
1. A compressor component having an attachment, a first platform extending radially outward from the attachment and an airfoil extending radially outward from the platform, the airfoil having an uncoated profile substantially in accordance with Cartesian coordinate values of X and Z, for each distance Y in inches as set forth in Table 1 , carried to three decimal places, wherein Y is a distance measured radially outward from a blade root center plane, the X and Z coordinate values being joined in smooth continuing splines to form airfoil sections and the airfoil sections joined smoothly to form the profile, wherein the airfoil has
manufacturing tolerances of approximately +/−0.012 inches.
2. The compressor component of claim 1 , wherein the airfoil has a root end and a tip end spaced at opposite the root end.
3. The compressor component of claim 2 further comprising a squealer tip at the tip end.
4. The compressor component of claim 1 , wherein the compressor component is a rotating blade.
5. The compressor component of claim 4 , wherein the compressor component is located adjacent to inlet guide vanes of a compressor.
6. The compressor component of claim 2 , wherein the airfoil is unflared proximate the tip end.
7. The compressor component of claim 1 , wherein the airfoil sections can be scaled uniformly.
8. An airfoil for a compressor blade, the airfoil having an uncoated profile substantially in accordance with Cartesian coordinate values of X, Y, and Z as set forth in Table 1 , carried to three decimal places, wherein Y is a distance measured in inches radially outward from a blade root center plane, the X and Z coordinate values being joined in smooth continuing splines to form airfoil sections and the airfoil sections joined smoothly to form the profile, wherein the airfoil has manufacturing tolerances of approximately +/−0.012 inches.
9. The airfoil of claim 8 , wherein the airfoil has a first end attached to a platform of a compressor blade.
10. The airfoil of claim 9 , further comprising a squealer tip positioned at a second end of the airfoil opposite of the first end.
11. The airfoil of claim 8 , wherein the airfoil sections can be scaled uniformly.
12. A compressor comprising a compressor disk and a plurality of compressor blades extending radially outward from the compressor disk, each of the plurality of compressor blades having an airfoil with an uncoated nominal profile substantially in accordance with Cartesian coordinate values of X, Y and Z, set forth in inches in Table 1 , with the Y coordinate values at perpendicular distances from planes normal to a radius from a blade root center plane, wherein airfoil sections are defined at each distance Y by connecting the X and Z coordinate values with smooth continuing splines, and the airfoil sections are joined smoothly to form the airfoil profile, wherein the airfoil profile is within +/−0.090 inches in a direction normal to the airfoil.
13. The compressor of claim 12 , wherein the plurality of compressor blades rotate about an axis of a gas turbine engine.
14. The compressor of claim 12 , wherein the plurality of compressor blades each have a squealer tip positioned at a tip end of the airfoil.
15. The compressor of claim 12 , wherein the airfoil for each of the plurality of blades is scalable to multiple sizes of gas turbine engines.