Elevators are one of three primary flight control surfaces found on an
airplane.
The elevators control the movement of the airplane about its lateral
axis. This motion is called pitch. The elevators form the rear part of
the horizontal tail assembly and are free to swing up and down. They are
hinged to a fixed surface—the horizontal stabilizer. Together the
horizontal stabilizer and the elevators form a single airfoil. A change
in the elevator's position modifies the camber of the airfoil, increasing
or decreasing lift.
The elevators are connected to the control stick by control cables. Pushing
the stick forward moves the elevators downward. This increases the lift
produced by the horizontal tail surfaces and causes the nose to drop.
Pulling back on the stick causes the elevators to move upward, decreasing
the lift produced by the horizontal tail surfaces and forcing the nose
upward.
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