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Old 19th Nov 2010, 21:56
  #704 (permalink)  
DavidD135
 
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EC-135 Aero Questions

I know the EC-135 has a hingeless rotor head where there is no mechanical hinge to speak of. However, there is a area or spot somewhere along the span of the EC-135 main rotor blade where the flapping motion occurs. It could be called the flapping point.

On the Dauphin's hingleless rotor head the main rotor hinge offset value is 6%.

On Bell two bladed main rotor head the main rotor hinge offset value is 0%.

The larger the main rotor hinge offset value the move maneuverable the
helicopter.

The Dauphin's normal hover attitude is 4 degrees pitch up and 3 degrees right wing down. This hover attitude does not change unless the helicopter is load outside its CG limits.

With the helicopter load within its CG limits, I just want to know what the EC-135 normal hover attiude is.

Thanks
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