Abstract
This abstract describes the weight optimization process followed by ALESTIS AEROSPACE in a secondary faring structure, designed and manufactured in composite material, focused in detail in the Belly Fairing structure of the A350 XWB A/C. The obective of this abstract is to enumerate and to decribe the weight optimization processes of this kind of structures, vieweing in detail following aspects: Optimum floatability definition in the joint between panels and structure Optimum design in sandwich panels Method to obtain out of plane loads for the joint between sandwich panel and structure Allowable determination for CFRP structure, based on finite element models correlated with mechanical tests It is also described in ths abstract the process followed to obtain test allowables and the methods developed to perform the weigth optimization in panels. Results obtained evidence that the Certification requirements are fulfilled for the complex design of a fairing such as Belly Fairing from A350XWB, manufactured with carbon fibre meterial with an optimum weigth.
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