Reinforced composite fan blade
AssigneeHamilton Sundstrand Corporation
InventorPaul A. Carvalho
Life of this patent
Estimating the term…
Abstract
A fan blade for a turbine engine includes an exterior surface defining an airfoil that is provided by leading and trailing edges, opposing generally chord-wise surfaces interconnecting the leading and trailing edges, and a tip. The airfoil extends from a root. A fan rotor includes a slot that receives the root. A spar is constructed from a first material and includes opposing sides. The spar provides at least a portion of the exterior surface. A sheath is constructed from a second material different than the first material. The sheath is arranged on both of the opposing sides to provide at least a portion of the exterior surface at the opposing surfaces.
Claims16
A fan blade for a turbine engine comprising:
- an exterior surface defining an airfoil provided by leading and trailing edges, opposing generally chord-wise surfaces interconnecting the leading and trailing edges and a tip, the airfoil extending from a root;
- a spar constructed from a first material and including opposing sides, the spar providing at least a portion of the exterior surface;
- and a sheath constructed from a second material different than the first material, the sheath arranged on both of the opposing sides to provide at least a portion of the exterior surface at the opposing surfaces;
- wherein the sheath provides a greater volume of the fan blade and percent of the exterior surface than that of the spar.
A fan for a turbine engine comprising:
- a fan rotor including a slot;
- a fan blade having an airfoil extending from a root that is received in the slot, the airfoil including an exterior surface defining the airfoil which is provided by leading and trailing edges, opposing generally chord-wise surfaces interconnecting the leading and trailing edges, and a tip;
- the fan blade includes a spar and a sheath constructed from different materials, the spar including opposing sides and providing at least a portion of the root and at least a portion of the airfoil exterior surface, the sheath arranged on both of the opposing sides to provide at least a portion of the exterior surface at the opposing surfaces;
- wherein the sheath provides a greater volume of the fan blade and percent of the exterior surface than that of the spar.
A fan blade for a turbine engine comprising:
- an exterior surface defining an airfoil provided by leading and trailing edges, opposing generally chord-wise surfaces interconnecting the leading and trailing edges and a tip, the airfoil extending from a root;
- a metallic spar including opposing sides and an aperture extending through to the opposing sides;
- and
- a composite sheath arranged on both of the opposing sides and extending through the aperture from one of the opposing surfaces to the other of the opposing surfaces to provide at least a portion of the exterior surface at the opposing surfaces.
Dependencies are inferred from the claim text.