IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0663084
(2008-06-03)
|
등록번호 |
US-8393648
(2013-03-12)
|
우선권정보 |
GB-0710966.3 (2007-06-07) |
국제출원번호 |
PCT/GB2008/001892
(2008-06-03)
|
§371/§102 date |
20100527
(20100527)
|
국제공개번호 |
WO2008/149079
(2008-12-11)
|
발명자
/ 주소 |
- Marengo, Giovanni Antonio
|
출원인 / 주소 |
- GKN Aerospace Services Limited
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
1 인용 특허 :
20 |
초록
▼
A flange (1) made of composite material, a method of making the flange (1) and a mandrel (3) upon which the flange (1) is formed are provided. The flange (1) is a curved hollow member that has a substantially triangular cross-section. The method of making the flange (1) includes applying composite m
A flange (1) made of composite material, a method of making the flange (1) and a mandrel (3) upon which the flange (1) is formed are provided. The flange (1) is a curved hollow member that has a substantially triangular cross-section. The method of making the flange (1) includes applying composite material to external surfaces of a curved mandrel (3). The mandrel (3) is curved and comprises a solid triangular cross-section. The method also includes curing the composite material to produce a flange (1) that is a curved hollow member that is substantially triangular in cross-section.
대표청구항
▼
1. A flange comprising composite material, wherein the flange comprises a curved hollow member having a substantially triangular cross-section; andsaid cross-section includes a substantially right-angled triangle, wherein a first side of the triangle is substantially perpendicular to a second side o
1. A flange comprising composite material, wherein the flange comprises a curved hollow member having a substantially triangular cross-section; andsaid cross-section includes a substantially right-angled triangle, wherein a first side of the triangle is substantially perpendicular to a second side of the triangle that follows a curve; anda third side of the triangle comprises substantially pentagonal shaped holes. 2. A flange according to claim 1, wherein the curved hollow member defines a section of a closed figure having a curved perimeter. 3. A flange according to claim 2, wherein the section is one quarter to one third of the closed figure having the curved perimeter. 4. A flange according to claim 1, wherein a plurality of the curved hollow members are combined to form a closed figure having a curved perimeter. 5. A flange according to claim 4, wherein the closed figure is a circle. 6. A flange according to claim 4, wherein the closed figure is an ellipse. 7. A flange according to claim 1, comprising fiber reinforced composite material. 8. A flange according to claim 7, wherein the fiber reinforcement is carbon fiber. 9. A flange according to claim 7, wherein the composite material is laminated. 10. A duct comprising composite material including a flange according to claim 1. 11. A duct according to claim 10, wherein the cross-sectional shape of the duct is a closed figure having a curved perimeter. 12. A duct according to claim 10, wherein the duct is an open channel having a curved perimeter. 13. A duct according to claim 10, wherein the material of the duct and the material of the flange are chemically compatible and thermally compatible. 14. A duct according claim 10, wherein the material of the duct and the material of the flange are the same material. 15. An aircraft comprising the duct of claim 10. 16. A method of making a flange comprising composite material, wherein the method comprises the steps of: a) applying composite material to external surfaces of a curved mandrel that comprises a substantially triangular cross-section;b) curing the composite material to produce a flange comprising a curved hollow member having a substantially triangular cross-section; andc) machining substantially pentagonal shaped holes on the face of the flange corresponding to the hypotenuse side of the substantially triangular cross-section, wherein the sides of the pentagonal shaped holes are arranged to align with fibers in the composite material comprising the flange. 17. A method according to claim 16, further comprising the step of: d) removing the mandrel from the hollow member. 18. A method according to claim 17, wherein the mandrel can be dismantled and removal of the mandrel comprises dismantling the mandrel. 19. A method according to claim 18, wherein the mandrel comprises two or more parts which are assembled to form a substantially triangular cross-section, wherein the two or more parts are dismantled for removal from the hollow member. 20. A method according to claim 19, wherein the mandrel comprises two or more segments which are dismantled by sliding segments relative to each other. 21. A method according to claim 18, wherein the mandrel comprises a plurality of tessellating sections that join together to provide the mandrel a substantially triangular cross-section when assembled and separate for removal from the hollow member. 22. A method according to claim 16, wherein the mandrel is made of soluble material that is dissolved to remove the mandrel from the formed hollow member. 23. A method of making a structure comprising composite material, wherein the method comprises providing a duct of composite material with a flange of composite material, wherein the flange is produced from the method according to claim 16, further comprising the step of attaching the flange to at least an end of the duct. 24. A method according to claim 23, wherein an end section of the material of the duct is darted to allow the material to fold into contact with one side of the flange; applying the flange to the surface of the duct proximate the darting; folding the darted section of the composite material making the duct into contact with the side of the flange to attach the flange to the duct. 25. A method according to claim 24, further comprising the steps of: applying filler at the junction of a vertex of the triangular cross-section provided by a surface of the flange in contact with the duct and a hypotenuse side of the triangular cross-section; and adding plies of composite material to overlay the duct, the filler and at least part of the hypotenuse side of the triangular cross-section. 26. A method according to claim 24, including the step of bagging the structure and curing the composite material providing the structure. 27. A method according to claim 26, further comprising machining fixing holes on exposed faces of the flange and wherein the substantially pentagonal shaped holes are access holes. 28. A mandrel for use in the method of making a flange according to claim 16, wherein the mandrel is curved and comprises a solid triangular cross-section. 29. A mandrel according to claim 28, wherein the mandrel comprises two or more parts configured to be assembled together to provide the substantially triangular cross-section. 30. A mandrel according to claim 29, wherein two segments comprising mitred surfaces are arranged one on top of the other to provide the curved member having a substantially triangular cross section. 31. A mandrel according to claim 30, further comprising one or more end plates attachable to one or both ends of the segments. 32. A mandrel according to claim 28, wherein the mandrel is made of iron nickel alloy. 33. A mandrel according to claim 28, wherein the mandrel is made of composite material. 34. A mandrel according claim 28, wherein the mandrel is coated with a release agent. 35. A mandrel according to claim 28, wherein the mandrel is coated with PTFE.
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