High Quality Content by WIKIPEDIA articles! Elevators are control surfaces, usually at the rear of an aircraft, which control the aircraft's orientation by changing the pitch of the aircraft, and so also the angle of attack of the wing. In simplified terms, they make the aircraft nose-up or nose-down. An increased wing angle of attack will cause a greater lift to be produced by the profile of the wing, and a slowing of the aircraft speed. A decrease in angle of attack will produce an increase in speed. The elevators may be the only pitch control surface present, or may be hinged to a fixed or adjustable surface called a tailplane or horizontal stabilizer. The rear wing to which elevators are attached have the opposite effect to a wing. They usually create a downward pressure which counters the unbalanced moment due to the airplane's center of gravity not being located exactly on the resulting centre of pressure, which in addition to the lift generated by the main wing includes the effects of drag and engine thrust. An elevator decreases or increases the downward force created by the rear wing.

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