F - Mech Eng,Light,Heat,Weapons – 16 – L
Patent
F - Mech Eng,Light,Heat,Weapons
16
L
F16L 9/18 (2006.01) F16L 39/00 (2006.01)
Patent
CA 2610355
The invention concerns a pipeline (1), in particular a pipeline (1) for fuel systems in aircraft, including an inner pipe (6) and an outer pipe (4) surrounding the inner pipe. In accordance with the invention, the inner pipe (6) is made of a metal material and/or, at least in portions, of a synthetic material and, at least in curved portions (5) of the pipeline (1), the outer pipe (4) is made of a synthetic material. Due to the fact that the outer pipe (4) is made of a synthetic material, a significant weight reduction can be accomplished in comparison to conventional coaxial pipelines, which are made entirely of a metal material and which, due to manufacturing reasons, require a larger number of flange joints (2) and (3) in longer curved pipeline portions. The invention also concerns a method for manufacturing such a pipeline (1), in particular a pipeline (1) for fuel systems in aircraft.
L~invention concerne une conduite (1), notamment une conduite (1) pour un circuit carburant d~aéronef, comportant un tuyau intérieur (6) et un tuyau extérieur (4) entourant le tuyau intérieur. Conformément à l~invention, le tuyau intérieur (6) est constitué d~une matière métallique et/ou, au moins dans certains tronçons, d~une matière synthétique. De plus, le tuyau extérieur (4) est constitué, au moins dans certains tronçons incurvés (5) de la conduite (1), d~une matière synthétique. Comme le tuyau extérieur (4) est constitué d~une matière synthétique, il est possible d~obtenir une réduction de poids considérable de la conduite par comparaison avec les conduites coaxiales traditionnelles, lesquelles sont entièrement constituées d~une matière métallique et nécessitent, pour des raisons de fabrication, un grand nombre de joints à brides (2) et (3) dans les tronçons de conduite incurvés plus longs. L~invention concerne également un procédé de fabrication d~une telle conduite (1), notamment d~une conduite (1) pour un circuit carburant d~aéronef.
Becks Ralf
Deharde Joachim
Airbus Deutschland Gmbh
Airbus Operations Gmbh
Oyen Wiggs Green & Mutala Llp
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