Difference between revisions of "Application Article: Modeling Large Structures in EM.Tempo"

Revision as of 19:58, 7 October 2016

Application Project: Radar Cross-Section of Aircraft

Objective: In this article, we explore computing RCS of electrically large structures, like aircraft.

Concepts/Features: Radar Cross Section Large Projects Cloud-Based Resources

Minimum Version Required: All versions

' Download Link: None

Introduction

In this article, we compute the bistatic radar cross-section (RCS) of a Dassault Mirage III type fighter aircraft at 850 MHz with EM.Tempo. At 850 MHz, considerable computational resources are required to compute a full-wave result with EM.Tempo's FDTD solver.

Computational Environment

The Mirage III has approximate dimensions (length,wingspan,height) of 15m x 8m x 4.5m. Or, measured in terms of freespace wavelength at 850 MHz, 42.5 lambda x 22.66 lambda x 12.75 lambda. Thus, for the purposes of EM.Tempo, we need to solve a region of about 12,279 cubic wavelengths. If we mesh each dimension of the cube at about 15 cells per freespace wavelength, we

CAD Model

Project Setup

Results

Figure 1: Geometry of the periodic unit cell of the dispersive water slab in EM.Tempo.

Figure 1: Geometry of the periodic unit cell of the dispersive water slab in EM.Tempo.

Figure 1: Geometry of the periodic unit cell of the dispersive water slab in EM.Tempo.

Figure 1: Geometry of the periodic unit cell of the dispersive water slab in EM.Tempo.

Figure 1: Geometry of the periodic unit cell of the dispersive water slab in EM.Tempo.

Figure 1: Geometry of the periodic unit cell of the dispersive water slab in EM.Tempo.

Figure 1: Geometry of the periodic unit cell of the dispersive water slab in EM.Tempo.

Figure 1: Geometry of the periodic unit cell of the dispersive water slab in EM.Tempo.