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One target of actual development activities for helicopter drives is the substitution of the conventional swash plate actuation based on hydraulic actuators by electro-mechanical actuators. In comparison to hydraulic actuators the jam of the electro-mechanical actuators has to be considered by a jam tolerant system design.A possible solution is a redundant system configuration with two identical a ...

In the scope of the development of a more electrical aircraft, this subject aims at the development and the experimental validation of a reliable sizing method for mechanical transmission elements, specifically screw drives and thrust bearings of aeronautic flight control actuation system. In fact the replacement of the hydraulic with electric devices promises many advantages but we have to pay at ...