What is the term for the upward bending of the rotor blades due to lift and centrifugal force?

The term that describes the upward bending of the rotor blades due to lift and centrifugal force is known as "coning." This phenomenon occurs as rotor blades generate lift when they rotate. As the blades experience this lift, combined with the force that pulls them outward due to their centrifugal motion, they tend to bend upward, forming a cone shape relative to the plane of rotation.

Coning is significant in the operation of helicopters and other rotorcraft as it affects the aerodynamics and performance of the rotor system. It is important for pilots and engineers to understand coning, as it can influence the rotorcraft's handling and overall stability during flight. Proper management of this effect is crucial for ensuring safe and efficient rotorcraft operation.