The three control inputs connecting the primary servos to the main rotor swashplate are:

The three control inputs connecting the primary servos to the main rotor swashplate are:

• A. Forward, Aft, and Lateral
• B. Up, Down, and Sideways
• C. Pitch, Roll, and Yaw
• D. Left, Right, and Center

Answer: (A)

The swashplate is driven by three servo actuators arranged around it, and each actuator provides motion in a specific spatial direction. Those three inputs are forward, aft, and lateral. Coordinated movement of these three inputs tilts the swashplate to produce cyclic pitch in the two rotor axes—longitudinal (forward–aft) and lateral (side-to-side)—while collective movement (not one of these three inputs) changes blade pitch uniformly to control overall lift. So, the three control inputs connecting the primary servos to the main rotor swashplate map to forward, aft, and lateral directions. The other options describe motions or axes that aren’t how the triad of swashplate inputs is defined.

The swashplate is driven by three servo actuators arranged around it, and each actuator provides motion in a specific spatial direction. Those three inputs are forward, aft, and lateral. Coordinated movement of these three inputs tilts the swashplate to produce cyclic pitch in the two rotor axes—longitudinal (forward–aft) and lateral (side-to-side)—while collective movement (not one of these three inputs) changes blade pitch uniformly to control overall lift. So, the three control inputs connecting the primary servos to the main rotor swashplate map to forward, aft, and lateral directions. The other options describe motions or axes that aren’t how the triad of swashplate inputs is defined.