CPL Aerodynamics · Practice

A 'ruddervator' (also called a butterfly or V-tail) combines the functions of rudder and elevator. When the pilot applies right rudder input only, the ruddervators will:

• A.the right ruddervator deflects down and the left deflects up — creating a pitch-up moment that the pilot must counter
• B.both ruddervators deflect to the right simultaneously, like a combined flap deflection
• C.right ruddervator deflects upward, left ruddervator deflects downward
• D.both ruddervators deflect upward to create a net nose-up pitch moment, while the fuselage side creates the yaw