To: Grisoni
Regarding rotor stall on a Robinson Vs a Bell. What you said is true but it might only apply to a Bell. Regarding the Robinson rotor head it has coning (flapping) hinges which gives it the characteristics of a fully articulated rotor head in that when the blades stall for whatever reason the blades will fold up on the coning hinges if you can't counter the stall condition. It may be true that the entire head pivots on the teeter bearing at some time during the stall but the ultimate action as a result of blade stall is blade fold.
Regarding your comment about the roll rate being 120-degrees per second I am in no position to say that it is wrong so if that is what you heard and you state from your own experience then I must accept it as being correct. If in fact you are correct then how can a pilot react to the roll if he has to pull the cyclic back very gently with no rapid control inputs. If it took him more than 1 second to fully react it would appear to me that he is on his back and out of control. One pilot wrote in this thread that he knew of an R22 that rolled on its' back and the pilot had enough presence of mind to get the dirty side down. The newbie pilot faced with this same situation would be eating a plexiglas sandwich.
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The Cat