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US 12,421,853 B2Granted
Turbine engine with reduced cross flow airfoils
AssigneesGE Avio S.r.l., General Electric Company
InventorsSaurya Ranjan Ray, Francesco Bertini, Lyle Douglas Dailey, Jeffrey D. Clements, Jaikumar Loganathan, Simone Rosa Taddei
Life of this patent
Estimating the term…
Abstract
An airfoil assembly has a platform and an airfoil. The platform has an upstream edge, a downstream edge, and a surface extending between the upstream edge and the downstream edge. At least a portion of the surface extends circumferentially along a surface baseline defined by a constant radial distance from the rotational axis. The airfoil has an outer wall. The outer wall extends between a root and a tip, and between a leading edge and a trialing edge. The airfoil assembly includes a fence provided along the outer wall.
Claims20
An airfoil assembly comprising:
- a platform having an upstream edge, a downstream edge and a surface extending therebetween, with at least a portion of the surface extending circumferentially along a surface baseline defined by a constant radius;
- an airfoil extending from the platform and having an outer wall extending between a leading edge and a trailing edge and between a root and a tip defining a span-wise direction, the outer wall defining a pressure side and a suction side;
- a fence along the outer wall and defining a raised potion of the outer wall, the fence following a local contour of the surface;
- and
- at least one of:
- a projection located along the platform and extending along the outer wall, the projection extending radially outward from the surface baseline;
- or
- a valley located along the platform and defining a depression formed along the surface, the valley extending radially inward from the surface baseline to a maximum depth;
- wherein at least a portion of the fence follows the local contour defined by at least one of the projection or the valley.
6 more elements
An airfoil assembly comprising:
- a platform having an upstream edge, a downstream edge and a surface extending therebetween, with at least a portion of the surface extending circumferentially along a surface baseline defined by a constant radius;
- an airfoil extending from the platform and having an outer wall extending between a leading edge and a trailing edge and between a root and a tip to define a span of the airfoil, the outer wall defining a pressure side and a suction side, the airfoil having an axial chord measured as a normal distance between the leading edge and the trailing edge;
- a fence located along the outer wall and defining an undulation along a respective portion of the outer wall, the fence being located a predetermined height from the surface along the span of the airfoil, the predetermined height being between 0% and 20% of the span as measured from the root, the fence being spaced from the surface, and the fence having a thickness defined as a distance the fence extgends relative to the span, the thickness being between 2% and 10% of the axial chord;
- and
- a splitter located along the surface being circumferentially offset from the airfoil, the splitter extending radially outward from the surface baseline.
2 more elements
An airfoil assembly comprising:
- a platform having an upstream edge, a downstream edge and a surface extending therebetween, with at least a portion of the surface extending circumferentially along a surface baseline defined by a constant radius;
- an airfoil extending from the platform and having an outer wall extending between a leading edge and a trailing edge and between a root and a tip, the outer wall defining a pressure side and a suction side;
- a fence located along the outer wall and defining a raised potion of the outer wall;
- a splitter located along the surface being circumferentially offset from the airfoil, the splitter extending radially outward from the surface baseline;
- and
- a bridge extending circumferentially between the splitter and at least one of the outer wall or the fence.
3 more elements
An airfoil assembly comprising:
- a platform having an upstream edge, a downstream edge and a surface extending therebetween, with at least a portion of the surface extending circumferentially along a surface baseline defined by a constant radius;
- an airfoil extending from the platform and having an outer wall extending between a leading edge and a trailing edge and between a root and a tip, the outer wall defining a pressure side and a suction side;
- a fence located along the outer wall and defining a raised potion of the outer wall;
- a splitter located along the surface being circumferentially offset from the airfoil, the splitter extending radially outward from the surface baseline;
- and
- a trench provided circumferentially between the splitter and the airfoil, the trench terminating at an outlet that is provided circumferentially between the splitter and the airfoil, with the outlet being axially aligned with a respective portion of the splitter.
3 more elements
Dependencies are inferred from the claim text.