Control Rotational Speed:
- Helicopter engines power rotating shafts located atop the fuselage.
- The rotor head connects the rotating engine to the helicopter blades.
Changes Rotary Motion In To Flapping:
- The main engine powers a shaft spinning inside the hub or rotor head.
- The spinning motion transmits centrifugal force to flapping hinges,
causing blades to flap up and down as they rotate.
Change The Lift Angle Of Each Blade:
- At the bottom of each blade are control elements - Swashplate mechanisms-that vary lift angles during different stages of rotation.
- As blades encounter varying forces, adjusting their lift is essential for flight.
Adjust Blades Pitch As Per Pilot Controls:
- Inputs from aircraft controls adjust swashplate movements, altering blades' lift angles as the head rotates.
- Blade positions directly affect the lift provided by the rotor system.
Reduce Torque:
- Helicopters naturally experience torsional movements opposite the main rotor rotation.
- The rotor head features mechanical components
like swashplate assemblies, which compensate for such forces, reducing torsional vibrations.
Maintain Blade Sync Through Dampeners:
- Dampeners within the rotating system mitigate excessive swaying
caused by varying airflows through helicopter blades.
- Maintaining synchronization is vital for stability and reduces vibrations in flight.
In essence, the rotor head manages blade motion, lift variations, minimizes the influence of natural forces through vibration controls, and enables a helicopter to efficiently lift and be piloted with precision within unpredictable atmospheres.
