Résultat des test d'impact de foudre effectués par Eurocopter sur des structures en matériaux composites.
Lightning strike tests at Eurocopter's Donauwörth facility have verified finite element analysis accuracy for carbonfibre structure current flow simulation, according to a European research consortium.
Composite airframe structures have less natural protection against lightning because they are not as conductive as purely metal fuselages or wings. So simulation is seen as a method for optimising designs to incorporate the lightning-protection measures needed, such as conductive coatings or strips that will add weight.
Cobham Technical Services' Opera electromagnetic design software was used to model the current flow through a helicopter structure. Actual tests on a Eurocopter EC135 helicopter structure then validated that model.
The test was carried out for the European Union's €4.2 million ($6.3 million) In-flight Lightning Strike Damage Assessment System project. The project was conceived to develop an in-flight embedded system for measuring actual lightning strikes
Les structures en matériaux composites sont moins protégés que les structures purement métalliques à cause de leur bonne conductibilité. Je me pose juste une question. Et le 787 ? Boeing a du trouvé une parade.
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