Multidomain electromagnetic modelling for installed performance of antennas on aerostructures (IPAS)

In this paper, we describe a sub-domain method for electromagnetic computations based on boundary element method. The benefits of the sub-domain method are the following: (1) the computation can be split between several companies for collaborative studies; (2) the computation time can be reduced by one or more orders of magnitude especially in the context of parametric studies. The accuracy and efficiency of this technique is assessed by directivity computations of monopole antennas mounted on a Fokker 100 aircraft. Multidomain results obtained by combining two sets of sub-domains are compared with direct boundary element methods. The computations are made in the VHF band for several positions of the monopoles, several generator loads and several engine faces to show the benefits of the multidomain method for parametric studies.