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How to divert lightning current from multi-layer composite structures and skin fasteners with lightning protection interconnects
How to divert lightning current from multi-layer composite structures and skin fasteners with lightning protection interconnects
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机译:如何用雷电保护互连从多层复合结构和皮肤紧固件转移雷电电流
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摘要
A multilayer composite structure (52) with integrated fastener- to-conductive layer surface lightning protection interconnection employs a conductive layer (72) with an inner surface (61) and a plurality of chamfered recesses (68) forming countersinks (74) in an outer surface (59). A carbon-fiber reinforced plastic (CFRP) composite layer is disposed on the inner surface (61) of the conductive layer (72) and conforms to the surface shape. A plurality of holes (70) extend through the plurality of chamfered recesses (68) in the conductive layer (72) and the adjoining CFRP composite layer in a manner such that the conductive layer (72) defines a countersink portion extending into the openings of the plurality of holes (70). The chamfered recesses (68) in the conductive layer (72) provides an electrically conductive surface area that contacts conductive countersunk fasteners installed within the plurality of holes (70) to enable current sharing between groups of neighboring fasteners (78).
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