A fan blade having a body with a dovetail and an airfoil extending radially outwardly. The airfoil includes a pair of skins spaced to form an internal core, which define a pressure side and a suction side, and extending from a radially inner end to a radially outer tip. The core receives a plurality
A fan blade having a body with a dovetail and an airfoil extending radially outwardly. The airfoil includes a pair of skins spaced to form an internal core, which define a pressure side and a suction side, and extending from a radially inner end to a radially outer tip. The core receives a plurality of braided tubes, with the tubes extending with at least a component in a radially outward direction. A fan and an engine are also described.
대표청구항▼
1. A component comprising: a body having a dovetail and an airfoil extending outwardly from said dovetail;said airfoil formed by a pair of skins spaced to form an internal core, and said skins defining a pressure side and a suction side, and extending from an inner end to an outer tip;said core rece
1. A component comprising: a body having a dovetail and an airfoil extending outwardly from said dovetail;said airfoil formed by a pair of skins spaced to form an internal core, and said skins defining a pressure side and a suction side, and extending from an inner end to an outer tip;said core receiving a plurality of braided tubes, said tubes extending with at least a component in a radially outward direction;said plurality of braided tubes are connected; andsaid plurality of braided tubes are connected together by stitching. 2. The component as set forth in claim 1, wherein said tubes are braided from a fiber material. 3. The component as set forth in claim 2, wherein said fiber material is one or more of carbon fiber, fiberglass or para-aramid synthetic fiber. 4. The component as set forth in claim 3, wherein said plurality of braided tubes are at least partially filled with a foam. 5. The component as set forth in claim 1, wherein said plurality of braided tubes are at least partially filled with a foam. 6. The component as set forth in claim 1, wherein said tubes taper to a point at an inner end. 7. The component as set forth in claim 1, wherein said dovetail has an upwardly extending portion that extends upwardly into a radially inner end of said braided tubes. 8. A fan comprising: a rotor carrying a plurality of fan blades, each said fan blade including a body having a dovetail and an airfoil extending outwardly from said dovetail;said airfoil formed by a pair of skins spaced to form an internal core, and said skins defining a pressure side and a suction side, and extending from an inner end to an outer tip;said core receiving a plurality of braided tubes, said tubes extending with at least a component in a radially outward direction;said plurality of braided tubes are connected together; anda plurality of braided tubes are connected together by stitching. 9. The fan as set forth in claim 8, wherein said tubes are braided from a fiber material. 10. The fan as set forth in claim 9, wherein said fiber material is one or more of carbon fiber, fiberglass or para-aramid synthetic fiber. 11. The fan as set forth in claim 8, wherein said plurality of braided tubes are at least partially filled with a foam. 12. The fan as set forth in claim 8, wherein said tubes taper to a point at a radially inner end. 13. The fan as set forth in claim 8, wherein said dovetail has an upwardly extending portion that extends upwardly into a radially inner end of said braided tubes. 14. A gas turbine engine comprising: a fan, a compressor, a combustor, a turbine section, and said turbine being configured to drive said fan through a gear reduction, said fan including a rotor carrying a plurality of fan blades, each said fan blade including a body having a dovetail and an airfoil extending radially outwardly from said dovetail;said airfoil formed by a pair of skins spaced to form an internal core, and said skins defining a pressure side and a suction side, and extending from a radially inner end to a radially outer tip;said core receiving a plurality of braided tubes, said tubes extending with at least a component in a radially outward direction; andsaid tubes taper to a point at an inner end. 15. The engine as set forth in claim 14, wherein said tubes are braided from a fiber material. 16. The engine as set forth in claim 15, wherein said fiber material is one or more of carbon fiber, fiberglass or para-aramid synthetic fiber. 17. The engine as set forth in claim 14, wherein said plurality of braided tubes are at least partially filled with a foam.
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이 특허에 인용된 특허 (14)
Goldfinch, Keith C.; Strother, Oliver M., Aerofoil sub-assembly, an aerofoil and a method of making an aerofoil.
Nelson Joey L. (Cincinnati OH) Elston ; III Sidney B. (Marbelhead MA) Tseng Wu-Yang (West Chester OH) Hemsworth Martin C. (Cincinnati OH), Counterrotating aircraft propulsor blades.
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