Patent ID: 6857669

Claim:
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.