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Objectives

The UAVE3 project is conceived with this horizon in mind:

To develop and improve the design, integration and verification/testing processes in order to diminish risk, time and cost of aeronautic certification in terms of E3 (Electromagnetic Environmental Effects) by means of the progressively larger employment of electromagnetic simulation tools.

Working towards such an ultimate goal implies advancing on firm steps and as a result, UAVE3 opts for a bottom-up approach in which increasingly difficult scenarios will be proposed from a limited number of materials and discontinuities already available and known from UAVEMI. Note that scenario here alludes to a controlled set-up where different data could be retrieved via different test cases and measurement procedures. In each incremental step, test cases will be proposed and both simulations and measurements will be compared and assessed enabling the following step. The aim is to have controlled variables and parameters so that proper conclusions can be obtained. The scenarios will gradually introduce different complications such as joints between different composite panels, between composite and metal panels, different kinds of joints, slots, cables, terminations, etc. The final step will involve a newly built demonstrator in which different test cases will be performed. The test cases will deal with the waveforms and frequency bands involved in LIE, EMP and HIRF.

In agreement with the strategy just exposed, UAVE3 has this main global objective:

  • Development of a full technology demonstrator (DEMO-E3): Composed by composite materials, discontinuities and cables typically present in current UAVs and already characterized with the aim of conducting simulations and measurements on it and cross-compare the results.

INTA was the pioneer in Spain in the development of UAVs for research and technology acquisition purposes (ALO, ALBA, SIVA, MILANO, DIANA, etc). Thus, it has the knowledge and capability to construct the demonstrator aimed at this project with the aeronautic characteristics and following the fabrication procedures employed in previous specimens. The development of such demonstrator and the performance of numerical and experimental tests will encompass the whole duration of the project. The creation of DEMO-E3 will be done with the knowledge acquired in incrementally difficult steps, where test cases defined over controlled scenarios will be also considered. All the partners will participate in this global objective, from the initial conception to the assessment of the final results but, also, to achieve such a goal, the following other objectives are needed to be pursued:

  1. Development of new FDTD/DGTD numerical models: The existing tools are intended to be expanded with new approaches to deal with aeronautic materials, sub-grid, innovative meshing approaches, and sensitivity analyses.
  2. Advance in experimental techniques for characterizing materials and discontinuities: The frequency bands of the effects to be covered in this project ranges from 0 to 18 GHz. This tremendously vast spectrum implies research and update in a wide variety of experimental characterization techniques.
  3. Development of new measurement systems: New developments are foreseen, namely, multi-point time-domain synchronous measurements to account for transient effects, noise cancellation in time-domain, conformal probes or development of microstrip E/H probes over substrates with controlled conductivity.

And as a natural consequence of the demonstrator development, the following objectives will also be achieved:

  1. Development of new E3 test procedures: The test cases to be proposed are intended to be much more controlled and good agreement with simulations is expected. The versatility of simulations will enable to gain further insight of the present test procedures that will help to develop new ones.
  2. To spread out the use of simulations in the design, integration and verification/test processes as a help to the certification processes: This global objective is aligned with the spirit of UAVE3. E3/EMC norms and standards will be revised to identify experimental tests suitable to be simplified through simulations.