What distinguishing feature does the UH-60A's rotor blades have?

The UH-60A Black Hawk is distinguished primarily by its four-blade rotor system. This design is essential for providing the helicopter with the necessary lift and stability while enabling improved maneuverability and performance in a variety of flight conditions. The four-blade configuration helps distribute the aerodynamic forces evenly, reducing vibration and enhancing overall efficiency. Additionally, having four blades allows for better performance at higher speeds and altitudes compared to rotor systems with fewer blades. The design choice reflects a balance between complexity, weight, and performance, which is critical for a utility helicopter like the UH-60A.