rotor blade

A rotor blade is a large, spinning arm attached to a helicopter or wind turbine. In helicopters, these blades rotate rapidly to generate lift, allowing the aircraft to stay airborne or move in different directions. In wind turbines, blades capture wind energy and convert it into rotational motion, which produces electricity. The design of rotor blades is crucial for efficiency and safety, as their shape and materials are optimized to handle forces and improve performance. Essentially, rotor blades act as the primary means of harnessing energy—either from motion through the air or from wind—to perform useful work.