Letsby Avenue,
I'm not sure if you're definitions are on the money. I was under the impression that a fully rigid rotorhead (e.g. BO105) was perfectly entitled to have a feathering hinge without running the risk of losing its 'fully rigid' description. And also if you maintain that there is no such thing as a coning hinge, then could you explain what is the design purpose of the two offset hinges on the R22?
Just from a semantic point of view I don't think there are any fully rigid rotor heads. Is it not a bit of a misnomer as all rotor systems (hingeless or otherwise) have elasticity to varying degrees?
Irlandés
Last edited by Irlandés; 21st Sep 2002 at 21:55.