PPRuNe Forums - View Single Post - Helicopter Dynamics: Gyroscopic Precession
Old 23rd Mar 2014, 21:51
  #151 (permalink)  
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AnFI, you wrote this
this force will have to be resolved by the Pitch Link (and thereby the control rods and hydraulics if there are any).
not really a misquote, is it? Maybe you should read exactly what you post rather than what you think you post.

This
bigger Chords allow for bigger moments
is another fatuous AnFI statement - just because the chord is bigger doesn't mean the CoP will be further away from the pitch axis - as I wrote before, selecting the location of the pitch change axis is what will determine the pitching moments of the blade.

Perhaps you ought to learn what an aerodynamic centre is!

I have never bought the textbook 'arguement' that the CoP does not move with a Symetrical Aerofoil
I think the 'textbook' indicates that the CoP moves little enough not to be an issue because the arm is so small - the bigger movements come with cambered blades and that can be minimised along the length of the blade by aeroelastic tailoring (something else you probably haven't heard of).
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