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Piezoelectric de-icing system for rotorcraft

Villeneuve Éric, Harvey Derek, Aubert Roger J., Perron Jean et Zimcik David. Piezoelectric de-icing system for rotorcraft. Dans : 70th American Helicopter Society International annual forum 2014 , 20-22 May 2014, Montreal, Quebec.

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Résumé

Deicing using piezoelectric actuators is considered as a potential solution to the development of low-energy ice protection systems for rotorcraft. This type of system activates resonant frequencies of a structure using piezoelectric actuators to generate sufficient stress to break the bond between the ice and the substrate. First, a numerical method was validated to assist the design of such systems. Numerical simulations were performed for the case of a flat plate and validated experimentally. The model was then used to study important design parameters such as actuator positioning and activation strategies, and it was concluded that positioning actuators at antinode locations, and activating them in phase with those antinodes to obtain maximum displacements for a given vibration mode. The findings were then used to apply piezoelectric deicing to structures more representative of a helicopter rotor blade. The method was implemented on a thinned Bell 206 main rotor blade and a Bell 206 tail rotor blade. Deicing performance was demonstrated in an icing wind tunnel. Power input to the actuators was below 19 kW/m2 (12 W/inch2) for all structures.

Type de document:Matériel de conférence (Non spécifié)
Sujets:Sciences naturelles et génie > Génie > Génie des matériaux et génie métallurgique
Département, module, service et unité de recherche:Départements et modules > Département des sciences appliquées > Module d'ingénierie
Mots-clés:dégivrage, protection contre le givrage, actionneur piézoélectrique, faible consommation
Déposé le:28 janv. 2016 01:09
Dernière modification:09 déc. 2016 14:18
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