Modelling of Electromagnetic Scattering from Large and General Intakes on Complex Platforms
Keywords:Fast methods, Method of Moments (MoM), MLFMA, radar signature, scattering
In the framework of the design of low observable aircraft, one of the most difficult problem is the numerical modelling of aeronautical air intakes with an – usually complex – arbitrary shape. Also the presence of radio absorbing material demands for accurate methods in evaluating the low level scattering for real life problems. This paper addresses the use of a full wave approach, based on the Multilevel Fast Multipole Approach (MLFMA), for a high fidelity modelling both of the whole (real life) aircraft, and of the intake scattering contribution, useful in the design and optimization stage of the intake itself.
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