Part 1 : general context and High intensity radiated Field ( HIRF)
After a rapid presentation concerning the evolution of technologies in the aeronautical domain based particularly on the use of composite materials and the increased role of electronics to ensure of critical functions, it is logical to examine which are the internal and external phenomena which could compromise the safety of the flight and the safety of operation with respect to electromagnetic threats.
For this purpose, a complete panorama of the electromagnetic phenomena is presented The origin of the specifications for HIGH INTENSITY RADIATED FIELD (HIRF) which are taken into account for the certification of the aircraft is largely approached at the level system but also at the level of equipment.
Part 2 : Lightning direct & indirect effect. Hardening and protection devices
After a presentation of lightning phenomenology for direct and indirect effect at system level but also at the equipment level according to the difficulties to produce an acceptable method of demonstration especially for the functional aspect This presentation is followed detailed and illustrated with description of various of CEM tests carried out in Faraday or better in anechoic chamber at the level of the equipment and the difficulty in reproducing the best as possible real installation.
The bases of the design of the circuit and protect devices are described as for the performances to satisfy in particular with regard to the concept of comprehensive and consistent hardening.
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