Improvement of the protection against direct lightning...

B - Operations – Transporting – 64 – D

Patent

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Details

B64D 5/00 (2006.01)

Patent

CA 2753734

The invention relates to a metalization structure of aircraft panels and process for obtaining such structure, such that it comprise a structure of a panel (1) made in composite material, the mentioned panel (1) comprising a metal mesh or foil (2) in its outer part, said panel (1) further comprising a bore which in turn comprises a shank and an upper countersinking (8), such that the mentioned panel (1) is fixed to another structural aircraft element (3) by means of metal fixing elements (4), characterized in that said structure comprise a metallization layer (7) arranged on the upper countersinking (8), extending in the adjacent area of the metal mesh or foil (2), such that it is ensured that electrical continuity exists between the upper countersinking (8) and the metal mesh or foil (2) during the time that the lightning bolt strikes the structure of the panel (1), further ensuring that most of the current discharged by the lightning bolt is conducted over the surface of the structure of the mentioned panel (1). The invention further relates to a process for making such structure of a panel (1).

L'invention concerne une structure de métallisation de panneaux d'aéronef et un procédé d'obtention de celle-ci. Ladite structure comprend : une structure de panneau (1) constitué d'un matériau composite, ledit panneau (1) comprenant une maille ou stratifié métallique (2) sur sa partie extérieure, la structure étant percée et comportant une tige et une zone de fraisage (8) supérieure; ledit panneau (1) étant fixé à un autre élément structural (3) de I'aéronef par l'intermédiaire d'éléments de fixation (4) métalliques. La structure est caractérisée en ce qu'elle comprend une couche (7) métallisée disposée sur la zone de fraisage (8) supérieure, qui s'étend dans la zone contiguë de la maille ou stratifié métallique (2), de façon qu'une continuité électrique soit assurée entre la zone de fraisage (8) supérieure et la maille ou stratifié métallique (2) pendant la durée d'un impact de foudre sur la structure du panneau (1), et que la majeure partie du courant déchargé par la foudre soit conduite par la surface de la structure dudit panneau (1). L'invention concerne également un procédé pour la réalisation d'une structure dudit panneau (1).

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