Which statement accurately describes rotorcraft?

Which statement accurately describes rotorcraft?

• A. They rely on rotating blades for lift
• B. They rely on fixed wings for lift
• C. They rely on buoyancy to stay aloft
• D. They rely on jet propulsion for lift

Answer: (A)

Rotorcraft generate lift with rotating blades. The rotor blades act like multiple wings spinning around a mast; as they turn, they accelerate air downward and create an upward reaction force that supports the aircraft’s weight. This setup also allows hovering and controlled flight by adjusting the blade pitch and rotor speed, independent of forward motion. Fixed-wing aircraft rely on forward airspeed to produce lift with their wings, so they can’t hover in place the same way. Buoyancy is the lifting force for balloons and airships, not rotorcraft. Jet propulsion provides thrust to move the aircraft, while lift in rotorcraft comes from the rotor blades themselves, often powered by an engine that drives the rotor.

Rotorcraft generate lift with rotating blades. The rotor blades act like multiple wings spinning around a mast; as they turn, they accelerate air downward and create an upward reaction force that supports the aircraft’s weight. This setup also allows hovering and controlled flight by adjusting the blade pitch and rotor speed, independent of forward motion.

Fixed-wing aircraft rely on forward airspeed to produce lift with their wings, so they can’t hover in place the same way. Buoyancy is the lifting force for balloons and airships, not rotorcraft. Jet propulsion provides thrust to move the aircraft, while lift in rotorcraft comes from the rotor blades themselves, often powered by an engine that drives the rotor.