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Module 12. Helicopter aerodynamics, structures and systems

The main rotor head hydraulic damper beam has been over tensioned. This would cause

  • too much stability and over sensitive controls.
  • too much stability and less sensitive controls.
  • instability and over sensitive controls.

Explanation

The hydraulic drag (lead-lag) dampers control how the rotor head responds to control inputs and disturbances. Over-tensioning the damper beam upsets the designed damping balance so the head no longer settles smoothly, giving instability with controls that feel over-sensitive. Correct damper tension is needed for stable, well-damped rotor behaviour.

frac84 asking:

why?

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