Method of manufacturing shaped stringers 't' which reduces the effect of Mexican hat curing tool used therein.

摘要

The invention relates to a method for the production of T-shaped stringers for an aircraft, in which the stringers comprise a web and a flange. The method includes the following steps: a first step in which a carbon fibre laminate is hot-formed in order to obtain half-stringers with an L-shaped cross-section; a second step in which the two hot-formed L-shaped half-stringers are positioned together to form a T-shaped stringer; a third step in which the resulting T-shaped stringer is glued to a cured surface, with a line of adhesive placed therebetween; and a fourth step in which the T-shaped stringer is cured inside a vacuum bag using invar alloy angles as curing tools. The method is characterised in that the invar alloy angles used are produced without any groove in the upper part thereof for a retaining section.