Conforme 2

• Funding Authority: DGA (French MOD) – ASTRID Maturation
• Project duration: 1-02-2017 / 1-02-2020
• Partners: Dassault Aviation, XLIM Institute

The initial ANR ASTRID CONFORME project made it possible to solve the problem of meshing in staircase to switch on a mesh conform to the geometry. The various techniques around the conform FDTD method have been studied. The important developments carried out in this framework led to the completion of a multi-region conform FDTD general solver and to the development of a method-specific compliant mesher. In addition, the oblique wires have inspired further studies to extend its capacities in non-uniform cartesian grids. In compliant cells, it was not possible to have the formalism operational for various reasons detailed in this maturation project. This is why we find this problematic at the heart of CONFORME2 with a new approach and a step back in order to better understand the complex problem of FDTD compliant wire-cell coupling.

The maturation project CONFORME2 also proposes to turn up in TRL all the problematic modeling of the external / internal assemblies airplane by proposing original evolution at the levels of the FDTD solver CONFORME, the conforming mesher and the environment of pre- and post- treatments inherent to the method. The objective is to take into account the complexity of the aircraft geometry but also to consider the electromagnetic properties of the materials in the conformal method which was initially developed for perfectly conductive surfaces. The operational validation of the tools on CEM aircraft problems will be carried out thanks to the involvement of Dassault Aviation in this project which have all the elements of modeling EM aircraft and a database of results on both the indirect effects of lightning and HIRF constraints.