Increasingly demanding performance and certification requirements for next-generation aircraft flight control systems, together with a continuous development effort within the industry towards `all/more electric' aircraft, have fostered the need to replace traditional hydraulic actuation systems by electric and/or electro-hydraulic technology. Digitally controlled brushless permanent-magnet drive systems with integrated power electronics, offer one possibility for rationalising the drive-train architecture of such aircraft actuation and control systems. The paper will discuss key issues pertinent to actuation systems based on electro-hydraulic actuators for large aircraft. Specifically, it considers an actuation system which has been developed for a primary control surface, viz. the rudder, for which aircraft aerodynamic loadings combined with environmental conditions require a high performance drive-train. (5 pages)
Electro-hydraulic actuation of primary flight control surfaces
1998-01-01
1 pages
Article (Journal)
English
electrohydraulic control equipment , all/more electric aircraft , brushless DC motor , rudder , wet rotor , brushless DC motors , aircraft control , permanent magnet motors , next-generation aircraft flight control systems , flooded air gap , primary flight control surfaces , electro-hydraulic actuation , DC motor drives , large aircraft , high performance drive-train
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