Which component of the TH-73A system is affected by cyclic control inputs?

• A. Tail rotor
• B. Swashplate
• C. Main rotor
• D. All of the above

Answer: (D)

Cyclic control inputs are primarily responsible for changing the pitch of the rotor blades and thereby controlling the helicopter's direction of flight. When the pilot moves the cyclic stick, it tilts the rotor disk, allowing for forward, backward, or lateral movements.

The swashplate plays a crucial role in this process; it translates the cyclic inputs from the pilot into changes in the pitch of the blades at specific points in their rotation. The swashplate consists of two components – the stationary section and the rotating section – which work together to facilitate the desired changes in rotor blade pitch.

The main rotor is directly impacted by these cyclic inputs as well, as changes in the swashplate position cause adjustments to the lift and control inputs at the blade level, allowing for the desired maneuverability.

Additionally, the tail rotor is indirectly affected by cyclic inputs as well. While the tail rotor's primary function is to counteract torque produced by the main rotor, any changes in the helicopter's attitude and direction due to cyclic inputs can also lead to adjustments in the thrust produced by the tail rotor to maintain control and stability.

Therefore, because cyclic control inputs influence the swashplate, which in turn affects the main rotor's pitch, and indirectly impacts the tail rotor's