Revision as of 17:50, 31 March 2022

Abstract

Landing gear doors / traps are usually composed of sandwich structures manufactured by hand lay up and cured in autoclave. In the present development, this type of construction and its associated manufacturing process have been replaced by a monolithic design manufactured by liquid composite moulding. Specifically, the selected process has been RTM (Resin Transfer Moulding) in a single process of impregnation / curing (one shot) with the objective of eliminating subsequent operations. In order to obtain a 3D integrated preform close to the final shape, pre-forming processes have been developed for the sub-elements of the part (skin, double T stiffeners, C stiffeners, etc.) as well as the processes of integration of the various preforms until obtaining an integrated preform. The preforming and manufacturing processes have been fully validated by obtaining real-size prototypes of the target part. This work is included within the ATEAERO project, with the support of the ETORGAI program (SPRI - Basque Government).

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