Design and Technology of Winding Curvilinear Pipelines from Sintered Polyimide-Fluoroplastic Film

This article deals with the issues related to designing and manufacturing light and reliable pipelines made of composite materials for missile technology, aircraft and land vehicles running on cryogenic fuel. Multi-layer straight and curvilinear pipelines made by winding polyimide films can significantly reduce the weight and level of bending loads. The article presents the geometry of a typical element of a curvilinear pipeline and the design of the flange of a cryogenic pipeline. A method for connecting the flange shank to the film shell is proposed and the results of testing pipelines made of polyimide-fluoroplastic films are presented. Cryogenic pipelines made of polyimide film PMF-352 have a smaller mass in comparison with metal analogues made of alloy AMg-6 and can be recommended as their replacement in pneumatic hydraulic systems of products operating on cryogenic fuels.

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