What is the primary function of a helicopter's cyclic control?

The primary function of a helicopter's cyclic control is to control the direction of flight. The cyclic, which is operated by the pilot's right hand, tilts the rotor disc in the desired direction by changing the pitch of the rotor blades as they rotate around the mast. This tilt causes the helicopter to move forward, backward, or sideways, effectively allowing the pilot to steer the helicopter in any horizontal direction.

When the cyclic is pulled back, the aircraft moves backward; if pushed forward, the helicopter moves forward; and if pressed left or right, it bank to those respective directions. This ability to tilt the rotor disc and thus direct the motion of the helicopter is essential for maneuvering during flight, whether in forward flight, hovering, or performing turns. Understanding the cyclic control's role is fundamental to helicopter flight operations, as it directly influences the aircraft's trajectory and orientation in three-dimensional space.