Rotor blades are essential components of helicopters and wind turbines. They are long, flat structures that rotate around a central hub, generating lift or harnessing wind energy. In helicopters, rotor blades allow the aircraft to rise, hover, and maneuver in the air. In wind turbines, they capture wind energy to produce electricity. The design of rotor blades is crucial for their efficiency and performance. They are typically made from lightweight materials like composite fibers or aluminum to withstand the forces of rotation. The shape and angle of the blades can be adjusted to optimize their function, whether for flight or energy generation.