Originally Posted by mnowell129
In two bladers, the fore blade is leading, the aft one lagging. So both blades are angled off to the retreating side at the same time and the center of mass of the rotor system isn't in the center of the shaft anymore and you get a 2/rev shake. (The teetering, Underslung head is used to mitigate this and another shake that occurs, more when we get to underslung head).
More topics I though of: Underslung heads and blade balancing.
Would a 3 bladed rotor have less shake than a 4 blade design, all else being equal?
ps: not only do I read this stuff, I reread it many times!