METODO DE FABRICACION DE LARGUERILLOS CON FORMA DE "T" PARA UN AVION Y HERRAMIENTA DE CURADO USADA EN EL MISMO

• Main Authors: ESQUIVIAS GARCIA, FERNANDO, PEREZ PASTOR, AUGUSTO, SANCHEZ FERNANDEZ, JULIAN
• Format: Patent
• Language: Spanish
• Published: 28.02.2013
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

The invention relates to a method for manufacturing T-shaped aircraft stringers, in which the T-shape stringers have a web and a flange and wherein the method includes: a first step of hot forming a carbon fiber laminate in order to achieve semi-stringers with a geometry with a L-shaped cross-section, a second step of joining the two L-shaped hot formed semi-stringers in order to form a T-shaped stringer, a third step in which the resulting T-shaped stringer is co-cured on a cured lining with an adhesive line separating said stringer and said lining, and a fourth step of curing the T-shaped stringer produced inside a vacuum bag using invar alloy brackets as curing tools. The method is characterized in that the invar alloy brackets are radial cut, eliminating a portion thereof that covers the stringer flange in order to define an invar alloy part having no flange.