Helicopter Rotor Systems


All helicopters have at least one main rotor to produce the lift that keeps helicopters in the air. The type of main rotor system is defined by how the blades are connected to the rotor hub. The blades may have hinges or bearings to allow them to feather, flap and lead/lag. Depending on what movement the rotor system allows, characterizes it as one of the following:

  • Rigid
  • Semi-Rigid
  • Fully Articulated


The video below covers the three types of helicopter rotor systems.


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