Method and device for protecting stiffeners and composite panel comprising stiffeners having said protection

The method involves coupling a structural section (1) to a stiffener (2) to be protected. The section is provided with an upper section (11) extending at distance from an edge (20) of the stiffener and arranged in form of an envelope adapted to absorb impacts on the edge by plastic deformation, a lo...

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Bibliographische Detailangaben
Hauptverfasser:	LABORIE, JEAN-MICHEL, BELLEIL, CÉDRIC, LESOURNE, HERVÉ, FOURNIE, LUDOVIC, BLOT, PHILIPPE
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AEROPLANES AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING AIRCRAFT AVIATION COSMONAUTICS HELICOPTERS 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
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Beschreibung
Zusammenfassung:	The method involves coupling a structural section (1) to a stiffener (2) to be protected. The section is provided with an upper section (11) extending at distance from an edge (20) of the stiffener and arranged in form of an envelope adapted to absorb impacts on the edge by plastic deformation, a lower section (12) framing lateral flanks and an intermediate section bearing partially on the edge to minimize propagation of impact forces to the lower section. The lower section is coupled demountably by detachment of fasteners (3) without deformation of the structural section. The lower section of the structural section includes lower walls featuring a notch filled with mastic. The material of the structural section is chosen from alloys based on aluminum and alloys based on titanium or epoxy aramide. An independent claim is also included for a protection device for protecting stiffeners of a composite panel.