Now something like Ed Lenz's design with a slight rotation of the blades that would improve the airfoil as it rotated, maybe something like that could be incorporated in your design.
BTW - since I'm new to "real" turbine designs and thinking of producing power instead of annoying wind chimes and ugly whirlygigs, can someone tell me what "TSR" is? I keep seeing this term in relation to efficiency and have no clue.
