Windrotator™ - tuning the airfoils position

[Windrotator]

Over time, the airfoils can get out of sync with their optimal
relative position. In the mechanical implementation of Windrotator™,
the shaft holding the wheel in place can be shifted slightly to loosen
the wheel and allow manual adjustments to be made in order to realign
the airfoils optimally.

This low-tech implementation make Windrotator™ especially suitable for
use in developing nations. All parts can be manufactured locally from
locally available materials.

A more sophisticated implementation of Windrotator™ is under
development, featuring small brushless DC servo motors rotating the
vertical airfoils, with sensors in the airfoils calibrating their
position to trigger speed adjustments of the motors.