Thanks a lot!
Ok, so in the ground:
Everything is programmed. You are in direct link with surfaces. The turn will depend on the speed of the aircraft. Even if you turn the SS with Full deflection, everything depends on speed.Usually, small deflection = ailerons. Big/full SS deflection = spoiler + Aileron.
You don't have roll demand. It is simply programmed. But again, speed of the aircraft will make the turn.
So during check-lists, when you see the spoilers extending, they are simply testing full SS deflection.
In ground mode, during take-off roll, elevator deflexion and aileron/spoiler deflexion will reduce (so turning the stick while taxi and on RWY is not the same thing - The Airbhs knows that while TO, the plane will take speed so it will reduce deflexion on surfaces.)
You don't have yaw coordination in ground mode.
In flight mode/flare mode, the roll rate is calculated. If you turn the stick at a certain deflexion, the plane will get the asked bank angle by using aileron, spoilers and rudder at any speed. The computers will calculate the best surface to use to react as precise as possible to satisfy our demand. You have roll demand.
Am I right now?
Last edited by AF330; 4th Feb 2015 at 19:47.