Shape optimisation of electro-mechanical ice protection systems
Résumé
The ice protection system (IPS) is one of the major consumers among the non-propulsive systems of an aircraft. In the trend of the electrification of the aircraft systems to minimize air transport environmental impact, this article focuses on electromechanical IPS which could be a low power alternative to electro-thermal ice protection systems. The principle of resonant IPS is to deform the structure to create stresses in the ice greater than those required to remove the ice accumulated on the structure. Electromechanical IPS have been the subject of numerous studies and the mechanical mechanisms for ice fracture initiation and propagation are now better known. Ways of improving these systems have also been identified. Hence, this article proposes a methodology based on substrate shape optimization to improve the performances of such systems by increasing fracture propagation while minimizing the stress in the structure to avoid mechanical failure. This preliminary study shows that an increase in the protected area (up to 250%) is possible. Experiments are conducted to confirm the computations. The final paper will include these experimental results.
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