flapping angle

It will also increase the difference of thrust between the advancing blade and the retreating blade that will then increase the cyclic flapping angle.

As the rotor thrust is, at first order, perpendicular to the tip path plane, an increase of the cyclic flapping angle will tilt the thrust rearward.

Specific design features include a fully harmonized rotor, a modulated collective pitch system, very low twice-per-revolution vibration level due to elastomeric thrust bearings, a sufficient flapping angle for low-"G" maneuvers and slope landings, control friction devices, and an electronic throttle control (governor).