TURBINE BLADE HAVING IMPROVED FLUTTER CAPABILITY AND INCREASED TURBINE STAGE OUTPUT
First Claim
1. A turbine blade having an attachment, a neck extending radially outward from the attachment, a platform extending radially outward from the neck, an airfoil extending radially outward from the platform, and a shroud extending radially outward from the airfoil, where the airfoil has 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 Z is a distance measured radially from the platform.
3 Assignments
0 Petitions
Accused Products
Abstract
A turbine blade, airfoil, and rotor stage for a gas turbine engine is disclosed. The turbine blade, airfoil, and rotor stage each includes an uncoated airfoil profile in accordance with Cartesian coordinate values of X, Y, and Z disclosed herein. The resulting airfoil exhibits high flutter margins, thus enabling the gas turbine engine to be operated at an increased power output while avoiding operational limitations required in known gas turbine engines.
-
Citations
17 Claims
- 1. A turbine blade having an attachment, a neck extending radially outward from the attachment, a platform extending radially outward from the neck, an airfoil extending radially outward from the platform, and a shroud extending radially outward from the airfoil, where the airfoil has 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 Z is a distance measured radially from the platform.
- 8. An airfoil for a turbine blade 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 Z is a distance measured radially from a platform of the turbine blade.
- 12. A plurality of turbine blades secured to a rotor disk to form a rotor stage, the turbine blades each having a platform and an 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 Z is a distance measured radially from the platform.
Specification