초록

An airfoil structure includes an airfoil that has a leading edge and a platform that includes a first side that is attached to the airfoil and a second side opposite the airfoil. The platform includes a relief cut on the second side of the platform axially aligned with the leading edge.

대표청구항 ▼

1. An airfoil structure comprising: an airfoil having a leading edge; anda platform including a first side attached to the airfoil and a second side opposite the airfoil, wherein the platform includes a relief cut on the second side of the platform axially aligned with the leading edge, the relief c

1. An airfoil structure comprising: an airfoil having a leading edge; anda platform including a first side attached to the airfoil and a second side opposite the airfoil, wherein the platform includes a relief cut on the second side of the platform axially aligned with the leading edge, the relief cut is non-symmetric relative to a leading edge of the platform, and the relief cut is spaced inward from a perimeter of the platform with a pressure side end of the relief cut is spaced a first distance from a pressure side edge of the platform and a suction side end of the relief cut is spaced a second distance from a suction side edge of the platform and the first distance is greater than the second distance. 2. The airfoil structure of claim 1, wherein the relief cut includes a region of reduced thickness in the platform spaced downstream of a leading edge of the platform. 3. The airfoil structure of claim 2, further comprising a root portion extending from the second side of the platform having a root leading edge, wherein the platform includes an overhang at a platform leading edge and the area of reduced thickness is located in the overhang axially forward of the root leading edge. 4. The airfoil structure of claim 2, wherein the relief cut forms a relief surface and a radially outer portion of the relief surface is spaced radially outward from a portion of the first side of the platform. 5. The airfoil structure of claim 4, wherein the portion of the first side of the platform is located at a leading edge of the platform. 6. The airfoil structure of claim 1, further comprising a root extending from the second side of platform, wherein the relief cut extends into a portion of the root and a leading edge portion of the relief cut is located axially forward of a leading edge of the root. 7. The airfoil structure of claim 1, wherein the relief cut extends in a direction generally transverse to the airfoil. 8. A gas turbine engine section comprising: a rotor configured to rotate about an axis of rotation; andan airfoil structure including: an airfoil having a leading edge; anda platform including a first side attached to the airfoil and a second side opposite the airfoil, wherein the platform includes a relief cut on the second side of the platform axially aligned with the leading edge of the platform and the relief cut is spaced inward from a perimeter of the platform with a pressure side end of the relief cut is spaced a first distance from a pressure side edge of the platform and a suction side end of the relief cut is spaced a second distance from a suction side edge of the platform and the first distance is greater than the second distance. 9. The gas turbine engine section of claim 8, wherein the relief cut includes a region of reduced thickness in the platform spaced downstream of a leading edge of the platform. 10. The gas turbine engine section of claim 8, wherein the platform includes a leading edge overhang and the area of reduced thickness is located in the leading edge overhang. 11. The gas turbine engine section of claim 8, wherein the airfoil is integral with the platform and the relief cut forms a relief surface with a radially outer portion spaced radially outward from a portion of the first side of the platform. 12. The gas turbine engine section of claim 8, further comprising a root on the second side of the platform for engaging the rotor, wherein the relief cut extends a long a portion of the root. 13. A method of forming an airfoil structure comprising: locating an airfoil having a leading edge on a first side of a platform; andforming a relief cut on a second side of the platform opposite the first side of the platform axially aligned with the leading edge of the airfoil and the relief cut is spaced inward from a perimeter of the platform with a pressure side end of the relief cut is spaced a first distance from a pressure side edge of the platform and a suction side end of the relief cut is spaced a second distance from a suction side edge of the platform and the first distance is greater than the second distance. 14. The method of claim 13, wherein the relief cut includes a region of reduced thickness in the platform spaced downstream of a leading edge of the platform, the relief cut is spaced inward from a perimeter of the platform. 15. The method of claim 13, wherein the airfoil is integral with the platform and the relief cut forms a relief surface, the relief surface includes a radially outer portion spaced radially outward from a portion of the first side of the platform. 16. The method of claim 13, wherein the relief cut is formed by at least one of a grinding, machining, or casting process.