Title :
Electromagnetic scattering from cavities with complex objects inside
Author :
Kisel, Vladiinir N. ; Fedorenko, Anatoly I.
Author_Institution :
Inst. for Theor. & Appl. Electrodynamics, Acad. of Sci., Moscow, Russia
Abstract :
The communication deals with the 3-D electromagnetic model elaboration and numerical investigation of the scattering properties of jet engine inlets accounting for real shape of the air duct and presence of the engine first stage to be the main scatterer. The basis of the model is the utilization of equivalence theorem and integral expressions for the electromagnetic fields in conjunction with iterative techniques to improve the accuracy of the surface currents evaluation on the duct walls and termination (e.g. blade structure). The results of numerical investigations are presented together with the indexes of the computer program performance for various types of engine intakes including curved ones (S-type) and ducts with complex blade structure inside
Keywords :
aerospace engines; aircraft; backscatter; electromagnetic fields; electromagnetic wave scattering; integral equations; iterative methods; radar cross-sections; waveguide theory; 3D electromagnetic model; EM scattering; RCS; air duct shape; backscattering; blade structure; cavities; complex objects; computer program performance; duct walls; electromagnetic fields; electromagnetic scattering; equivalence theorem; integral equations; iterative techniques; jet engine inlets; radar cross section; scattering properties; surface currents; termination; waveguide theory; Airplanes; Algorithm design and analysis; Convergence; Current density; Diffraction; Ducts; Electromagnetic scattering; Jet engines; Rail to rail inputs; Waveguide components;
Conference_Titel :
Mathematical Methods in Electromagnetic Theory, 2000. MMET 2000. International Conference on
Conference_Location :
Kharkov
Print_ISBN :
0-7803-6347-7
DOI :
10.1109/MMET.2000.890460
