When the elevons are deflected differentially they provide roll control, and behave in a similar way to a traditional aircraft's ailerons. When the elevons move together in the upwards direction, they cause the aircraft to pitch up, similarly when they move together in the downwards direction the aircraft will pitch down. Travel limits, that are controlled by the fly-by-wire mixing unit, are a little The end stops on the rudder allow a travel range of 30 degrees in either direction. Of travel up or down and the outer/middle elevons can travel 23.5 degrees up The PFCU's (show above) end stops allow the inner elevons a9 degrees The PFCU is actuated by an electro-hydraulic twin-ram servo system with either the blue or green or the yellow standby hydraulics powering either of the rams. Three elevons on each wing, that control roll and pitchĮach of these eight flight control surfaces is independently controlled by a Powered Flying Control Unit (PFCU).
With fly-by-wire, the aircraft is controlled by means of electrical signals that are sent to the hydraulically actuated flight controls which consist of: Click on the diagram for a high-res version that will open in a new windowĬoncorde was one of the first fly-by-wire aircraft in the world.
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