The lift and propulsion required for flight are generated by which component?

• A. Fuselage
• B. Tail rotor
• C. Main Rotor Blades
• D. Landing gear

Answer: (C)

Main rotor blades. They act like rotating wings and propellers, pushing air downward so the helicopter rises (lift). The engine powers the rotor to provide that lift, and pilot inputs with collective and cyclic control change the amount of lift and the direction of thrust. The tail rotor mainly counters the torque from the main rotor and aids yaw control, while the fuselage and landing gear have other roles. So the component that directly creates both lift and propulsion is the main rotor blades.