F/A-18 Rudder Question
Wondering if any Hornet jockeys out there can answer this one. I have noticed through photographs that the F/A-18 can simultaneously deflect it's dual rudders inwards towards the centreline of the aircraft. This is usually seen as the jet sits on aircraft carrier catapults prior to launch. As there is no yaw advantage in either direction going to result, what is the aerodynamic benefit of doing so?
Likewise, at what point does the conventional use of the rudders return and how does a pilot control yaw with both rudders canted inwards?
There's an obvious answer to all this but can anyone explain the design better?
cheers
Todd.