Why twist is given to the propeller blade?

Twist is given to the propeller blade to optimize its aerodynamic efficiency across its length. As the blade rotates, different sections experience varying airspeeds; the twist allows each section to maintain an optimal angle of attack, maximizing lift and minimizing drag. This design helps ensure that all portions of the blade generate thrust efficiently, improving overall performance and fuel efficiency. Additionally, it contributes to smoother operation and reduced vibration.