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Home > Exam Questions > PPL(H) - Private Pilot Licence (Helicopter) > Aircraft General Knowledge > What allows the removal of drag hinges in semi-rigid rotor systems?

152 - PPL(H) Helicopter Theory Exam Questions in English - What allows the removal of drag hinges in semi-rigid rotor systems?

Question 152 - Aircraft General Knowledge - PPL(H) - Private Pilot Licence (Helicopter)

Use of a gimbal ring with central flapping hinge

Geometric or aerodynamic twist of the rotor blades

Additional cone hinges on the rotor head

Rotor blade attachment below the central flapping hinge

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