File:Aileron yaw.gif|alt=Yaw animation of a plane|Yaw File:Aileron pitch.gif|alt=Pitch animation of a plane|Pitch File:Aileron roll.gif|alt=Roll animation of a plane|Roll •
Vertical axis or yaw axis — an axis drawn from top to bottom and perpendicular to the other two axes. •
Transverse axis, lateral axis, or pitch axis — an axis running from the pilot's left to right in piloted aircraft, and parallel to the wings of a winged aircraft, parallel to the
buttock line. •
Longitudinal axis, or roll axis — an axis drawn through the body of the vehicle from tail to nose in the normal direction of flight, or the direction the pilot faces, similar to a ship's
waterline. Normally, these axes are represented by the letters X, Y and Z in order to compare them with some reference frame, usually named x, y, z. Normally, this is made in such a way that the X is used for the longitudinal axis, but there are
other possibilities to do it.
Vertical axis (yaw) The
yaw axis has its origin at the center of gravity and is directed towards the bottom of the aircraft,
perpendicular to the wings and to the fuselage reference line. Motion about this axis is called
yaw. A positive yawing motion moves the nose of the aircraft to the right. The
rudder is the primary control of yaw. passes through an aircraft from wingtip to wingtip. Rotation about this axis is called
pitch. Pitch changes the vertical direction that the aircraft's nose is pointing (a positive pitching motion raises the nose of the aircraft and lowers the tail). The
elevators are the primary control surfaces for pitch. A positive rolling motion lifts the left wing and lowers the right wing. The pilot rolls by increasing the lift on one wing and decreasing it on the other. This changes the bank angle. The
ailerons are the primary control of roll. The rudder also has a secondary effect on roll. ==Relationship with other systems of axes==