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An airplane in
flight changes direction by movement around one or more of its three axes of
rotation: lateral axis, vertical axis, and longitudinal axis. These axes are
imaginary lines that run perpendicularly to each other through the exact
weight center of the airplane. The airplane’s rotation around them is called
pitch, roll, and yaw. The pilot guides the airplane by controlling pitch,
roll, and yaw, and by use of the elevators, ailerons, and rudder.
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