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Thread: Sikorsky X2 coaxial heli developments.
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Old 31st Aug 2008, 00:06
  #329 (permalink)  
The Sultan
 
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There are stiff rotors, but no actual rigid rotors. Simple dynamics. Helicopter history has shown everyone underestimates the flexing of the blades. Proto 60, 61 63 and 64 are clear evidence of this.

The Sultan
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