Airbus Operations Sl

Airbus Operations Gmbh

Manuel Recio Melero

Pedro Nogueroles Viñes

Antonio Torres Esteban

Jose-Maria Blanco-Saiz

Vicente Martínez Valdegrama

Yolanda Miguez Charines

José Orencio Granado Macarrilla

Teresa Latorre Plaza

Antonio Blázquez Ajenjo

Luis Miguel Garcia Vázquez

Pedro Cabrera Rodriguez

Jose Maria Blanco Sainz

Antonio Blazquez Ajenjo

A composite laminate () for an airframe lifting surface comprising a set of stacked plies () of pre-preg material, the composite laminate () being surrounded by at least an edge () following an edge direction E along the composite laminate (), the set of stacked plies () including: a first plurality () of plies () formed by tapes arranged parallel to the edge direction E, and a second plurality () of plies () formed by tapes arranged in a direction different to the edge direction E, wherein the thickness of at least one ply of the second plurality () of plies is lower than the thickness of each ply of the first plurality () of plies.

Composite laminate for an airframe lifting surface and method for manufacturing thereof

A composite laminate for an airframe lifting surface including: at least two sides and one ramp area defined by a decreasing staggered laminate extended along a ramp direction, wherein the composite laminate includes: first plies formed by tapes arranged parallel to the ramp direction, second plies formed by tapes arranged orthogonal to the ramp direction, third plies formed by tapes arranged in a first laying up direction, being the first laying up direction different from the ramp direction and the direction orthogonal to the ramp direction, and fourth plies formed by tapes arranged in a second laying up direction, being the second laying up direction different from the ramp direction, the direction orthogonal to the ramp direction and the first laying up direction; wherein in the ramp area, the tapes forming the third and/or fourth plies are extended from one laminate side to another laminate side.

Composite material part () with stringer () on ramp, manufactured from a stack of fabrics, which comprises at least one zone () with two sectors () having a greater thickness than that of the surrounding zones and with the stringer () situated on an edge () of said zone () in which: a) each group of fabrics (', . . . ) of said sectors () has the dimensions to form on said edge () a ramp with an acceptable gradient 1/p so that the stringer () remains situated on the ramp; b) the stacking of the zone () is carried out firstly by placing the fabrics (&#x2032;, . . . ) of the first sector () and on these the fabrics (&#x2032;, . . . ) of the second sector () in such a way that in the coinciding section () of said edge () the gradient of the resulting ramp is 1/(p/2).

Composite material part with stringer on ramp

A manufacturing procedure of a composite material part (), with an edge region () destined to be joined to another part by rivets, making a change in the geometry of said edge region () with respect to an initial surface () on the part's external face, comprising the following steps: a) providing a laying-up tool incorporating a modified surface () according to said change in the edge region () geometry; b) providing the composite material plies needed for the laying-up of the part, with the plies () destined for the edge region () of the part affected by the geometric modification being already cut so that they finish as they reach said modified surface (); c) laying-up said plies over said tool and curing the resultant laminate. The invention also refers to a lower skin of an aircraft wing () manufactured according to said procedure.

Manufacturing procedure of a part made out of a composite material introducing a geometric change in one of its faces

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Madrid, Spain

Manuel Recio Melero