Amiad's Mini Sigma

Hi Martin, a wind turbine blade functions very much like an airplane wing in a climb. Obviously in one case the air is moving and the other the air is...

I don´t get it. There is a good case for powering those massive container ships we see in the news (generally when there´s a bridge strike or they get...

An 820 ft diameter windmill has a circumference of just over half a mile. Thus at 10 RPM, the tip speed is 310 mph. I presume this acts as a speed...