What does the term "pitch" refer to in relation to rotor blades?

The term "pitch" in relation to rotor blades specifically refers to the angle of the rotor blades in relation to the oncoming air. This angle is critical as it affects the amount of lift produced by the blades during flight. By adjusting the pitch, pilots can control the lift and maneuverability of the helicopter.

The pitch can be adjusted collectively or individually, depending on the design of the rotor system, allowing for better response to changing flight conditions. Understanding pitch is essential for effective helicopter operation, as it directly influences performance during takeoff, landing, and in various flight maneuvers.