Lightning strike protection system for aircraft fuel tanks...

Details Lightning strike protection system for aircraft fuel tanks... Lightning strike protection system for aircraft fuel tanks...

2007-12-11

2007-12-11

Sherry, Michael (Department: 2836)

Electricity: electrical systems and devices

Discharging or preventing accumulation of electric charge

C361S218000

Reexamination Certificate

active

10743279

ABSTRACT:
Lightning strike protection system for aircraft fuel tanks made of low electrical conductivity composite material. The system comprises an electrical conductive thin wire mesh (1) that covers the whole external surface of the tank outer skin (I) made of composite and a thick wire metallic mesh (2) overlapping the mesh (1) at a minimum distance of 50 mm to both sides of a row of fasteners (III) joining the said outer skin (I) to one internal part (II) of either composite or metallic material. Both metallic meshes (1, 2) maintain electrical contact by their installation/assembly and by means of metallic countersunk head washers (3) connected to bonding points and set to the gap existing between the fastener (III) and the outer skin (I). The corresponding fabrication process is also described.

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