Patent ID: 8840372

Claim:
A set of cyclic swashplates for controlling the pitch of blades of a main rotor of a rotorcraft having flight controls, the set having: a non-rotary swashplate connected to the flight controls, the non-rotary swashplate being retained against rotation about an axis of rotation (AX), a rotary swashplate fastened to each blade and the non-rotary swashplate so that the rotary swashplate may rotate about the axis of rotation (AX) relative to the non-rotary swashplate, drive means that connect the rotary swashplate and a rotor mast of the main rotor in rotation about the axis of rotation (AX), a drive arm with slideway connection means and annular linear connection means secured to the rotary swashplate in rotation about the axis of rotation (AX), a first end of the drive arm being connected to the rotary swashplate by the annular linear connection means, and a second end of the drive arm being connected to the rotor mast by the slideway connection means associated with the drive means, wherein the slideway connection means comprise first fluting secured to the second end of the drive arm and co-operating with second fluting of the rotor mast, the first fluting being arranged at a periphery of a through orifice formed in the second end of the drive arm, the first fluting being disposed in a direction parallel to the axis of rotation (AX).