VERFAHREN ZUR HERSTELLUNG EINEN FLÜGELMITTELKASTEN EINES FLUGZEUGS MIT MINDENSTENS EINEN VERSTEIFER MIT MINDENSTENS EINER DURCHGANGSBOHRUNG

摘要

A method of manufacturing a central wing box which comprises internal stiffeners (24) at least one of which has at least one through hole (26). For each stiffener (24) having at least one through hole (26) and comprising a first branch (40.1) of a first U-shaped and C-shaped section (28, 30) and a second branch (40.2) of a second section in U and C (28 ', 30'), the method comprises, for each through hole (26), the steps of making a first section (26.1) of the through hole (26) in the first U profile or in C (28, 30) and making a second section (26.2) of the through hole (26) in the second U-shaped or C-shaped (28 ', 30') before the first and second U-shaped or in C (28, 28 ', 30, 30') are positioned on the mold (34).