Plain English Meaning

When a propeller spins, the blades are pulled outward by the spin. Because the blades are twisted, that outward pull tries to untwist them — flattening the blade angle. That twisting effect is the centrifugal twisting moment.

Full Definition

A force acting on a rotating propeller blade that tries to rotate the blade toward a flatter, lower-pitch angle. It is produced by centrifugal force pulling each part of the spinning blade outward along the plane of rotation, which works against the blade's twisted shape and tends to twist it toward flat pitch.

Context Anchor

Seen in propeller theory, especially when learning how propeller blade angle is held or changed during operation.