1) Aircraft control 
A flaperon is a type of aircraft control surface that combines aspects of both flaps and ailerons. In addition to controlling the roll or bank of an aircraft, as do conventional ailerons, both flaperons can be lowered together to function similarly to a dedicated set of flaps. Both ailerons could also be raised, which would give spoilerons. The pi...
A control surface combining the functions of a FLAP and an AILERON.
A control surface combining the functions of a FLAP and an AILERON.
a control surface functioning both as a flap and as an aileron.