Retreating blade flapping down
Regarding dissimetry of lift and blowback.
It makes sense to me why the advancing blade flaps up on a teetering rotor but I can't seem to get my mind around what makes the retreating blade flap down.
The only thing I can see that would make the retreating blade flap down is that the plane of rotation is tilted upwards by the advancing blade flaping up, which wound make the retreating blade flap down only because it is staying in it's plane of rotation.
I think this theory is riddled with holes.
First post here, not sure if it is in the right place.