What helicopter rotary swash plate?

A helicopter rotary swash plate is a mechanical device that allows the helicopter's rotor blades to tilt in all directions, providing control over the helicopter's movement. It consists of a rotating disc connected to the rotor shaft and a stationary swash plate that is tilted by the pilot's controls. The upper swash plate is attached to the rotor hub and contains three bearings that allow the rotor blades to tilt in all directions. The lower swash plate is attached to the helicopter's fuselage and contains three pistons that are connected to the pilot's controls.

When the pilot moves the cyclic control, the lower swash plate tilts, causing the upper swash plate and rotor blades to tilt in the same direction. This causes the helicopter to move in the direction of the tilt. When the pilot moves the collective control, both swash plates tilt in the same direction, causing all of the rotor blades to tilt in the same direction. This causes the helicopter to climb or descend. When the pilot moves the tail rotor control, the upper swash plate tilts in one direction while the lower swash plate tilts in the opposite direction. This causes the rotor blades to tilt in such a way that the helicopter turns around its vertical axis.