IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0434210
(2003-05-09)
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우선권정보 |
FR-0006896 (2002-06-05) |
발명자
/ 주소 |
- Porte, Alain
- Lalane, Jacques
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출원인 / 주소 |
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대리인 / 주소 |
Stevens, Davis, Miller &
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인용정보 |
피인용 횟수 :
13 인용 특허 :
5 |
초록
▼
A connecting device for connecting first and second tubular pieces of an aircraft turbine engine may include a rigid ring with an at least approximately S-shaped cross section. The rigid ring is housed in a recess of an acoustic protection cellular core of the first tubular piece and includes: (1) a
A connecting device for connecting first and second tubular pieces of an aircraft turbine engine may include a rigid ring with an at least approximately S-shaped cross section. The rigid ring is housed in a recess of an acoustic protection cellular core of the first tubular piece and includes: (1) an external branch, which bears against an external skin of the second tubular piece and is secured to the latter by a first fixing device; (2) a back, arranged facing an edge face of the cellular core; (3) a front arranged facing the first tubular piece, after the first and second tubular pieces have been connected; (4) a transverse branch connecting the back to the front; and (5) an internal branch connected to an internal skin of the second tubular piece and secured to the latter.
대표청구항
▼
1. A connecting device providing a connection between a first tubular piece of an aircraft turbine engine, provided at its front end with a first annular external flange and a second acoustic tubular piece of said turbine engine, the wall of which comprises a permeable internal skin, an impermeable
1. A connecting device providing a connection between a first tubular piece of an aircraft turbine engine, provided at its front end with a first annular external flange and a second acoustic tubular piece of said turbine engine, the wall of which comprises a permeable internal skin, an impermeable external skin and a cellular core inserted between said internal and external skins, said connecting device comprising:an annular connecting piece comprising an annular sleeve externally surrounding the rear end of said second tubular piece, and a second annular external flange; first fixing means, distributed around said sleeve of said connecting piece and passing through said sleeve and said external skin of the rear end of said second tubular piece, for securing the latter to said connecting piece; and second fixing means, collaborating with said first and second flanges, for securing said first and second tubular pieces along a connecting plane defined by said first and second flanges, wherein: at the rear end of said second tubular piece the edge face of said cellular core is set back from the edges of said internal and external skins to leave an annular space in the rear end of said second tubular piece; in said annular space there is housed a rigid ring with an at least approximately S-shaped cross section, comprising: an external branch, which bears against said external skin and is secured to the latter by said first fixing means; a back, arranged facing the edge face of said cellular core; a front arranged facing said first tubular piece, after said first and second tubular pieces have been connected; a transverse branch connecting said back to said front; and an internal branch connected to said internal skin and secured to the latter; and said external branch, said back and said transverse branch delimit, in said annular space, an external annular duct which is open on the rear side of said second tubular piece and in which the internal ends of said first fixing means are housed. 2. The connecting device as claimed in claim 1, wherein said back is secured to the edge face of the cellular core.3. The connecting device as claimed in claim 1, wherein said transverse branch, said front and said internal branch delimit, in said annular space, an internal annular duct facing toward said edge face of said core and wherein, arranged in said internal annular duct, is a filler ring having a cross section of which corresponds to that of said internal annular duct.4. The connecting device as claimed in claim 3, wherein said filler ring is secured both to said rigid ring and to the edge face of the core.5. The connecting device as claimed in claim 1, wherein said transverse branch, said front and said internal branch form a solid ring.6. The connecting device as claimed in claim 5, wherein said solid ring is provided, on the opposite side to said front, with a face for being secured to the edge face of the core.7. The connecting device as claimed in claim 1, wherein said first fixing means are distributed in at least two separate sets, spaced apart along said annular sleeve.8. The connecting device as claimed in claim 1, further comprising, in addition to said first fixing means, blind fixing means, distributed about said sleeve of said connecting piece and passing through said sleeve and said external skin of the rear end of said second tubular piece in line with said cellular core, for contributing to securing said sleeve to said second tubular piece.9. The connecting device as claimed in claim 8, wherein said blind fixing means absorb less than half of the forces transmitted by said connecting device between said first and second tubular pieces.10. The connecting device as claimed in claim 1, wherein said rigid ring of S-shaped cross section is made of metal.11. The connecting device as claimed in claim 1, wherein said rigid ring of S-shaped cross section is a fiber-matrix composite component.
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