Control surface

noun

Definitions

Noun
  1. 1
    A moveable surface attached to a machine such as an aircraft or submarine that can be used to control the machine's motion in roll, pitch or yaw.

    "Before flight, it is vital to ensure all control surfaces are clear of obstruction and can move smoothly and freely."

  2. 2
    a device that provides reactive force when in motion relative to the surrounding air; can lift or control a plane in flight wordnet

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