Boundary-Integral-Equation Methods for Screen Problems in Acoustic and Electromagnetic Aerospace Research

The paper describes the application of boundary-integral-equation methods to solve two problems in acoustic and electromagnetic aerospace research. The first problem is concerned with the structural-acoustic analysis of solar arrays of satellites. This analysis involves the solution of a boundary-integral equation for determining the acoustic pressure jump across the solar panels. The solar panels are geometrically modelled as screens (open surfaces in three-dimensional space). The second problem is related to the radar cross section prediction of engine inlets of fighter aircraft. The prediction requires the calculation of the scattered electromagnetic field when the inlet is illuminated by a radar beam. Engine inlets are modelled as three-dimensional perfectly conducting cavity-like screens. The scattered electric field is obtained by the numerical solution of the Electric-Field Integral Equation.