Which rotor system typically features three or more blades?

A fully articulated rotor system typically features three or more blades, which allows for greater lift and improved efficiency. In this design, each blade is attached to the rotor hub through individual bearings, permitting not only movement in a vertical direction but also enabling them to flap up and down and lead and lag as needed. This flexibility helps accommodate changes in lift and drag, which are particularly important during maneuvers and when dealing with varying wind conditions.

The use of multiple blades enhances the rotor system's ability to manage increased loads and contribute to smoother flight characteristics. This can result in quieter operation and improved performance in terms of responsiveness and stability. While other rotor systems may use different configurations or mechanisms, the fully articulated design specifically benefits from the increased blade count to optimize its overall functionality and performance.