Refer to figures.
The swash plate assembly consists of two circular plates:

• Rotating swash plate.

• Non-rotating swash plate.

These plates are directly connected and stacked on top of each other, but the lower one remains stationary, while both can be raised or lowered along the rotor mast.

The lower plate is held in place by fixed, non-rotating scissors attached to the rotor gearbox at their lower attachment point. This arrangement prevents the lower swashplate from moving while keeping the control arms connected to it free from bending.

The rotating scissors are attached at the upper end of the swashplate to the drive shaft and serve a similar purpose for the upper, rotating part of the swashplate. This arrangement ensures that the rotating part maintains the same rotational speed as the main rotor. These scissor links can extend and contract, allowing the swashplate to move upward and downward in response to collective control inputs.

In simpler terms, the swashplate system consists of two stacked circular plates. The lower one doesn't move and is kept steady by fixed scissors connected to the rotor gearbox. The upper one can rotate, transmitting the drive from the rotor hub to the rotating swashplate. It is supported by rotating scissors, ensuring it spins at the same speed as the main rotor. These scissors can also adjust in length, allowing the swashplate to move up and down when collective control is applied.