The increase in the use of electronic systems in modern fly-by-wire Air Vehicles (AV) has made the topic of EMC (ElectroMagnetic Compatibility) assessment and protection a major concern for aircraft safety. Furthermore, the increased use of composite materials worsens the situation, for their poor screening and conductive capabilities, compared to metallic ones.

The prediction of the behavior of AV under EM threats is a must, since they are held responsible for malfunction of electronic equipment due to current coupled through cables by high level of EM fields. Unmanned Air Vehicles (UAV) are especially susceptible for their extensive use of composites, high density of electronics, some of them managing critical functions.

From the EMC point of view, we can distinguish three different overlapped frequency bands related to the topics addressed on this project:

  1. Lightning Indirect Effects (LIE): 0-50MHz, originated by the current flowing along the structure after lightning strikes.
  2. High-Intensity Radiated Field (HIRF) effects: 10kHz-18GHz coming from artificial intentional/unintentional external/internal sources.
  3. Non-Nuclear Electromagnetic Pulses (NNEMP): 0-100 MHz coming from intentional artificial sources (weapons).

The main objective of this project is to implement a validation methodology in the whole frequency range (0 to 18 GHz) for the EM immunity assessment of UAV, for their tactical interest within this call. As a result, a research partnership will be consolidated at national level, with the capability and the experimental/numerical tools to address the complexity of the whole problem.