The flexible skirt of air cushion vehicle (ACV) has structure with thinmembrane rubber material. According to load acted on the skirt bagand the principle of material keeping continuous along main directionof load, the bag was divided into lots of sects by reference planes alonglongitudinal direction of bag. The sects were cutting off from skirtrubber material with limited width, and seamed together to form thewhole skirt bag. Due to the sophisticated spatial configuration of skirtbag at bow and stern corner, sometimes it could not unfold the dividedbag sects at above locations directly onto one plane for cutting by theunfold function embedded in CATIA. So, a solution was presented tounfold above local skirt bag with sophisticated spatial configurationbased on simulation of manual manipulation, which combined theutilizing of 3D model construction in CATIA and applicationdevelopment in AutoCAD. The process of unfold presented wasparametric driven. The skirts of a towing model and a large scale liftingplatform were fabricated based on this unfold method. The shapeformingof whole skirt was well after filled by high-pressure airflowduring static hovering test, and the towed resistance test result reachedthe overall performance requirement, which demonstrated thefeasibility of solution presented.
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