Evaluation of capacitance matrix of artificial orbiting satellites

Alad, Rizwan H ; Chakrabarty, Soumyabrata

Abstract

This article presents the evaluation of capacitance matrix of an artificial orbiting satellite considering a composite metallic structure of a parabolic reflector antenna with cuboid and plates. Integral equations are formed by relating the unknown charge density on the metallic conductor and are solved using the Method of Moments (MoM) in which the  pulse functions are used as basis functions and  the delta functions  are used as testing functions. The surfaces of the conducting structure are meshed using non-uniform triangular patches. The matrix equations are solved by using iterative Generalized Minimum Residual (GMRES) algorithm. The numerical data on the capacitance matrix and charge distribution of these structures have been presented. The capacitance of a metallic cuboid is computed to validate the approach.

Keyword(s)

Capacitance Matrix, Electrostatic Charging, Gauss Legendre Quadrature, Method of Moments, Triangular Meshing

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