Control surface

(aerospace engineering) Any movable airfoil used to guide or control an aircraft, guided missile, or the like in the air, including the rudder, elevators, ailerons, spoiler flaps, and trim tabs. In restricted usage, one of the main control surfaces, such as the rudder, an elevator, or an aileron.

Control surface may refer to:

• Audio control surface
• a control surface in airplane flight controls
• Diving plane, a control surface in submarines
• In fluid dynamics, a surface through which flux occurs, causing convergence or divergence of a control volume (see control surface)

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