What does blade pitch refer to?

Blade pitch refers to the angle of the blade relative to the plane of rotation and is crucial in determining the performance and efficiency of the rotor system. A higher blade pitch typically increases lift but also requires more engine power to maintain rotor speed, while a lower pitch decreases lift and requires less power. This adjustment of blade pitch allows the helicopter to control ascent, descent, and forward flight effectively.

Understanding blade pitch is essential for pilots, as manipulating it directly influences the helicopter's responsiveness and overall flight dynamics. This understanding is central to managing the rotorcraft's performance, ensuring safe operations during various flight configurations. Other choices, such as the length of the rotor blades, the distance between the blade and the mast, and the flexibility of the rotor blades, do not define blade pitch and therefore are not correct in this context.