Airbus Operations Sl

Ignacio Outon Hernández

Alberto Arana Hidalgo

Yolanda Miguez Charines

Antonio Torres Esteban

Juan Zúñiga Sagredo

Oscar Miguel Macías Jareño

Juan José Pastrana Bermejo

José Luis Delgado Jareño

Emilio José Gutiérrez Santos

Juan Jose Pastrana Bermejo

The present invention relates to a stringer, particularly to a stiffening and structural longitudinal element for skin of aircraft airfoil surfaces, characterized in that it incorporates two separate and independent reinforcement areas, one in the foot and the other at the end of the web (head) of the stringer, where the reinforcement areas are obtained by a widening of the section of the stringer, the widening being formed by a localized stack of reinforcing plies of composite material which are embedded within the stringer. The invention also relates to the method of manufacture and is particularly applicable to stringers having an L-shaped or T-shaped section.

Reinforced stringer and method of manufacture thereof

A manhole assembly in the lower skin () of an aircraft wing made of a composite material for giving access to an installation placed inside said aircraft wing such as a fuel tank, comprising an inner cover () and an outer cover () joined by first fastener means (); the lower skin () being configured with a rebated edge () around the manhole so that the outer cover () can be mounted over the lower skin () maintaining the aerodynamic continuity in the aircraft wing surface; the inner cover () being mounted over the lower skin () by its inner surface with a sealing profile () between them and being joined to the lower skin () by second fastener means ().

Manhole assembly in the lower skin of an aircraft wing made of a composite material

Aircraft component with panels () stiffened with stringers () configured with a central section () and some feet () in which there are zones of potential intersections or interferences of said stringers () with spars () and ribs (), in which the configuration of the ends of the stringers () affected by said intersections or interferences includes a first section () in which the height of the central section () of the stringer () is reduced until it disappears and the width of the feet () is increased until it reaches a predetermined width A and a second section () with some extended feet () of said predetermined width A and no central section (), including in said first section () the mechanical means () for binding the end of the stringer () to the skin (). The invention also relates to a method for manufacturing said panels ().

Aircraft component with panels stiffened with stringers

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Madrid, Spain

Ignacio Outon Hernández