What are the three primary flight controls and their roles in rotor movement?

What are the three primary flight controls and their roles in rotor movement?

• A. Cyclic controls pitch and roll; collective controls lift via pitch; pedals control tail rotor yaw stability.
• B. Ailerons control roll; elevator controls pitch; rudder controls yaw.
• C. Throttle controls engine speed; flaps control lift; spoilers control roll.
• D. Trim controls stabilize the aircraft; speed brake reduces airspeed; landing gear extension.

Answer: (A)

The key idea is how the three main controls shape the rotor system to produce movement. The cyclic changes the tilt of the rotor disk, which directs thrust in the desired direction and creates pitch and roll for forward, backward, or sideways motion. The collective alters the pitch of all rotor blades together, changing overall lift to make the helicopter climb or descend. The pedals adjust the tail rotor thrust, counteracting main-rotor torque and providing yaw control to steer the helicopter left or right and keep heading stable. This aligns with the described roles: cyclic controls pitch and roll, collective controls lift via pitch, and pedals control the tail rotor yaw stability. In a helicopter, you don’t use fixed-wing surfaces like ailerons, elevators, or a rudder for primary rotor movement, and the other options describe those fixed-wing or non-rotor controls.

The key idea is how the three main controls shape the rotor system to produce movement. The cyclic changes the tilt of the rotor disk, which directs thrust in the desired direction and creates pitch and roll for forward, backward, or sideways motion. The collective alters the pitch of all rotor blades together, changing overall lift to make the helicopter climb or descend. The pedals adjust the tail rotor thrust, counteracting main-rotor torque and providing yaw control to steer the helicopter left or right and keep heading stable. This aligns with the described roles: cyclic controls pitch and roll, collective controls lift via pitch, and pedals control the tail rotor yaw stability. In a helicopter, you don’t use fixed-wing surfaces like ailerons, elevators, or a rudder for primary rotor movement, and the other options describe those fixed-wing or non-rotor controls.