justinian_cioroianu@yahoo.com

 

Windpump in South Dakota, USA

This design has proven to be very practical at low speeds.
It does not kill birds.
Other designs run at higher speeds and scale larger.
They kill birds.
The really big machines run tip speeds near the speed of sound.
They are noisy and they kill birds.
I find that stepping motors make good AC generators.

 Use photovoltaic arrays  at large scale.