PPRuNe Forums - View Single Post - Certification of Robinson Helicopters (incl post by Frank Robinson)
Old 22nd Nov 2000, 19:16
  #133 (permalink)  
Try_Cyclic
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My reply had a text diagram that I messed up; I'll just do without it for now.

Lu,
The blades flap as a unit, about the teeter bolt.
The blades do not flap at the coning hinges.
Coning will not affect the pitch links, because they are coincident with the coning hinge centerline.
Flapping happens just like on a Bell; the rotor teeters as a unit . The pitch links will then change pitch on the blades since they are not coincident with the teeter bolt.
That is why there is a delta effect.
Take a good look at this, because I think you are thinking erroneously about the role of the coning hinges: they are not flapping hinges.

Congatulations, We set a record!
Its because a certain Dog won't drop his bone.
GRRRRRR!!!! Bad Doggy