Articles | Volume 14
https://doi.org/10.5194/ars-14-107-2016
https://doi.org/10.5194/ars-14-107-2016
28 Sep 2016
 | 28 Sep 2016

Numerical computation of lightning transfer functions for layered, anisotropically conducting shielding structures by the method of moments

Fabian Happ, Heinz-D. Brüns, Gazmend Mavraj, and Frank Gronwald

Abstract. A formalism for the computation of lightning transfer functions by the method of moments, which involves shielding structures that may consist of layered, anisotropically conducting composite materials, is presented in this contribution. The composite materials, being of a type that is widely used in space- and aircraft design, are electrically characterized by an equivalent conductivity. As basis for the quantitative analysis the method of moments is used where shielding surfaces can be treated by a thin layer technique which utilizes analytical solutions inside the layer. Also the effect of an extended lightning channel can be taken into account. The method is applied to geometries that resemble an actual airplane fuselage.

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Short summary
A numerical method is presented which is capable to compute the electromagnetic fields created by the current of a spatially extended lightning channel. The coupling of these fields into simple models of aircraft fuselages is investigated, where the electric material parameters of the fuselages correspond to those of realistic layered carbon fiber composite.