Originally Posted by
Arnie Madsen
Too add to that there is another unusual thing about the R rotor head.
ALL OTHER 2-blade systems connect the swash plate linkage to the blade pitch arm
exactly at the teeter hinge position.
That way pitch is never altered when the rotor teeters, Pretty much an industry standard .
HOWEVER in the R system the pitch link is offset of main teeter point.
I could never wrap my head around how they get that to work
Arnie,
We use the offset pitch link system on model helicopters. It adds in negative feedback to the blade during gusty conditions. Imagine advancing blade flaps up but the pushrod from the swash plate holds the grip where it is, the result is the blade introduces momentary less pitch during the flapping (up) event and automatically twists the blade back down again at the same time. This happens for both teetering and flapping events when the pitch link is offset in this manner.