IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0044964
(2011-03-10)
|
등록번호 |
US-8753094
(2014-06-17)
|
우선권정보 |
GB-1005053.2 (2010-03-26) |
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
3 인용 특허 :
5 |
초록
▼
A gas turbine engine nose cone assembly (40) comprises a tapering spinner (42). The tapering spinner (42) has a point (44) at a first end (46) and a circular base (48) at a second end (50). The tapering spinner (42) comprises a carbon fiber containing composite material layer (70), an electrically i
A gas turbine engine nose cone assembly (40) comprises a tapering spinner (42). The tapering spinner (42) has a point (44) at a first end (46) and a circular base (48) at a second end (50). The tapering spinner (42) comprises a carbon fiber containing composite material layer (70), an electrically insulating layer (74) arranged on an inner surface (72) of the carbon fiber containing composite material layer (70), an electrically conducting layer (78) arranged on an inner surface (76) of the electrically insulating layer (74) and an electrically conducting member (80) extends through the first end of the tapering spinner (42) and is connected to the electrically conducting layer (78). This arrangement provides lightning protection for the gas turbine engine nose cone assembly (40).
대표청구항
▼
1. A gas turbine engine nose cone comprising a tapering spinner, the tapering spinner having a point at a first end and a circular base at a second end, the tapering spinner comprising a carbon fiber containing composite material layer having an inner surface, an electrically insulating layer having
1. A gas turbine engine nose cone comprising a tapering spinner, the tapering spinner having a point at a first end and a circular base at a second end, the tapering spinner comprising a carbon fiber containing composite material layer having an inner surface, an electrically insulating layer having an inner surface, an electrically conducting layer and an electrically conducting member, the electrically insulating layer being arranged on the inner surface of the carbon fiber containing composite material layer, the electrically conducting layer being arranged on the inner surface of the electrically insulating layer and the electrically conducting member extending through the first end of the tapering spinner and being connected to the electrically conducting layer, wherein the first end of the tapering spinner has a rubber tip and the electrically conducting member extends through the rubber tip, andwherein the electrically conducting member comprises a conical member, a disc member and a reduced cross-sectional area member, the reduced cross-sectional area member extending coaxially between the conical member and the disc member, and the rubber tip is positioned radially around the reduced cross-sectional area member and axially between the disc member and the conical member. 2. A gas turbine engine nose cone as claimed in claim 1 wherein the electrically conducting layer comprises a metallic layer. 3. A gas turbine engine nose cone as claimed in claim 1 wherein the electrically conducting layer comprises a metallic mesh. 4. A gas turbine engine nose cone as claimed in claim 1 wherein the electrically conducting layer is selected from the group consisting of copper and aluminum. 5. A gas turbine engine nose cone as claimed in claim 1 wherein the electrically conducting member comprises a metallic member. 6. A gas turbine engine nose cone as claimed in claim 5 wherein the metallic member is selected from the group consisting of copper and aluminum. 7. A gas turbine engine nose cone as claimed in claim 1 wherein the electrically insulating layer comprises a glass fiber containing composite material layer. 8. A gas turbine engine nose cone as claimed in claim 7 wherein the glass fiber containing composite material layer is selected from the group consisting of glass fibers in an epoxy resin, glass fibers in a polyester resin, glass fibers in a vinyl ester resin, glass fibers in a bismaleimide resin and glass fibers in another thermosetting resin. 9. A gas turbine engine nose cone as claimed in claim 1 wherein the carbon fiber containing composite material layer is selected from the group consisting of carbon fibers in an epoxy resin, glass fibers and carbon fibers in an epoxy resin, carbon fibers in a poly-ether-ether-ketone matrix and carbon fibers and glass fiber in a poly-ether-ether-ketone matrix. 10. A gas turbine engine nose cone as claimed in claim 1 wherein the electrically insulating layer comprises a glass fiber containing composite material layer, the electrically conducting layer comprises a metallic mesh and the electrically conducting member comprises a metallic member. 11. A gas turbine engine nose cone as claimed in claim 1 wherein the carbon fiber containing composite material layer, the electrically insulating layer and the electrically conducting layer are co-molded together to produce the gas turbine engine nose cone. 12. A gas turbine engine nose cone as claimed in claim 1 wherein the electrically insulating layer is bonded to the carbon fiber containing composite material layer and the electrically conducting layer is bonded to the electrically insulating layer to produce the gas turbine engine nose cone. 13. A gas turbine engine nose cone comprising a tapering spinner, the tapering spinner having a point at a first end and a circular base at a second end,the tapering spinner comprising a carbon fiber containing composite material layer having an inner surface, an electrically insulating layer having an inner surface, an electrically conducting layer and an electrically conducting member,the electrically insulating layer being arranged on the inner surface of the carbon fiber containing composite material layer,the electrically conducting layer being arranged on the inner surface of the electrically insulating layer,the electrically conducting member extending through the first end of the tapering spinner and being electrically connected to the electrically conducting layer,the first end of the tapering spinner having a rubber tip and the electrically conducting member extending through the rubber tip,the electrically conducting member comprising a conical member, a disc member and a reduced cross-sectional area member, the reduced cross-sectional area member extending coaxially between the conical member and the disc member, the disc member being positioned within the tapering spinner, the electrically conducting layer being directly connected to the disc member of the electrically conducting member, andthe rubber tip being positioned radially around the reduced cross-sectional area member and axially between the disc member and the conical member. 14. A gas turbine engine nose cone as claimed in claim 13, wherein the conical member has a conical surface, the tapering spinner has a conical outer surface and the rubber tip has a conical surface, the conical surface of the rubber tip is arranged flush with the conical surface of the conical member and the conical outer surface of the tapering spinner. 15. A gas turbine engine nose cone as claimed in claim 13, wherein the rubber tip is secured to the carbon fiber containing composite material layer. 16. A turbofan gas turbine engine including a metallic fan rotor and a nose cone, the nose cone comprising a tapering spinner, the tapering spinner having a point at a first end and a circular base at a second end,the tapering spinner comprising a carbon fiber containing composite material layer having an inner surface, an electrically insulating layer having an inner surface, an electrically conducting layer and an electrically conducting member,the electrically insulating layer being arranged on the inner surface of the carbon fiber containing composite material layer,the electrically conducting layer being arranged on the inner surface of the electrically insulating layer,the electrically conducting member extending through the first end of the tapering spinner and being electrically connected to the electrically conducting layer,the nose cone being secured to the fan rotor, andthe electrically conducting layer being electrically connected to the fan rotor. 17. A turbofan gas turbine engine as claimed in claim 16, wherein the first end of the tapering spinner includes a rubber tip and the electrically conducting member extends through the rubber tip,the electrically conducting member comprises a conical member, a disc member and a reduced cross-sectional area member, the reduced cross-sectional area member extends coaxially between the conical member and the disc member, the disc member is positioned within the tapering spinner, the electrically conducting layer is directly electrically connected to the disc member of the electrically conducting member, andthe rubber tip is positioned radially around the reduced cross-sectional area member and axially between the disc member and the conical member. 18. A turbofan gas turbine engine as claimed in claim 16 wherein the nose cone is secured to a metallic support ring and the support ring is secured to the fan rotor, and the electrically conducting layer is electrically connected to the support ring. 19. A turbofan gas turbine engine as claimed in claim 16 wherein the electrically conducting layer comprises a metallic layer, the electrically conducting member comprises a metallic member and the electrically insulating layer comprises a glass fiber containing composite material layer. 20. A turbofan gas turbine engine as claimed in claim 16 wherein the electrically insulating layer comprises a glass fiber containing composite material layer. 21. A turbofan gas turbine engine as claimed in claim 20 wherein the glass fiber containing composite material layer is selected from the group consisting of glass fibers in an epoxy resin, glass fibers in a polyester resin, glass fibers in a vinyl ester resin, glass fibers in a bismaleimide resin and glass fibers in another thermosetting resin and the carbon fiber containing composite material layer is selected from the group consisting of carbon fibers in an epoxy resin, glass fibers and carbon fibers in an epoxy resin, carbon fibers in a poly-ether-ether-ketone matrix and carbon fibers and glass fibers in a poly-ether-ether-ketone matrix.
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