Technology Transfer

Applications

Electromagnetic modeling for lightning protection of the ELA3 launch pad
  EMIR technique used to measure the near field radiated by an antenna

 > Automotive

• Electromagnetic susceptibility in motor vehicles.
• Electromagnetic topology in vehicle wiring.

 > Aeronautical

• Electromagnetic topology in aircraft wiring.
• Measurements of a system's electromagnetic level.
• Electromagnetic data base processing.

 > Space

• Electromagnetic simulation of electromagnetic coupling.
• Design of equivalent ground level tests.

 > Naval

• Electromagnetic coupling between aerials.
• On-board electromagnetic coupling and zoning constraints.

 > Ordinance

• Electromagnetic safety related to propellers

Keywords

• Electromagnetic compatibility (EMC), Electromagnetic topology, Electromagnetic coupling, Wiring, Lightning, HIRF (High Intensity Radiated Fields), Electrostatic discharges.

Advantages

• High level of electromagnetic compatibility expertise at system level and of protection design, made possible by research oriented testing facilities combined with excellent numerical modeling capabilities.
• Various types of electromagnetic threats are considered: lightning, High Intensity Radiated Fields (HIRF), Electrostatic Discharges (ESD), Electromagnetic Interference (EMI).
• Onera holds a leading position in France in electromagnetic coupling assessment of complex systems.
• Important electromagnetic compatibility data banks available including hundreds of bibliography references, achievements and tests.

Testing

• Impedance measurements of

• Material surface (Zs).
• Shielded cables transfer (Zt).

• Testing facilities

• Anechoic chamber (10 x 7 x 4 m3)
• Mode Stirred Chamber (4.9 x 3.7 x 3.2 m3).
• TEM cell.
• Stripline cell.
• EMIR Technique.

Simulation and Computer codes

• 3D simulation of electromagnetic compatibility on complex systems, taking into consideration structure, wiring and equipment input.
• Time domain modeling: ALICE (FDTD), EIVE (FVTD), GD (Discontinuous Gallerkin).
• Frequency domain : ELSEM3D (Integral Methods), FERMAT (Asymptotic Methods).
• Cable harness modeling: CRIPTE.
• High frequency stochastic modeling : RANDOMOP, PWB (Power Balance).

Expertise

• Wiring design and protection.
• High level technical advice and expertise in the physics of electromagnetic coupling.
• Control, testing and diagnosis of risks.
• Design of lightning protection for structures and industrial sites.
• Lectures and training sessions.
• Numerical simulation and development of computer codes.
• Measuring of electromagnetic constraints on large systems.
• System level Functional electromagnetic compatibility.
• System level Stochastic electromagnetic compatibility.

Customers

• Renault, Peugeot, Alstom, Sagem, Snecma, EADS CCR, DCN, Cnes, Eurocopter, Dasault-Aviation.

 

DTD/FVTD and wiring model of a Volvo S80 illuminated
by a biconical antenna (GEMCAR UE project)

Non-uniform cable models