Thursday, 17 February 2011

Moving blade vertical axis wind turbine

I remember reading that there are problems with efficiency of vertical axis wind turbines (I seem to remember this being because the return stroke is going into the wind). I wondered whether it would be possible to have on the arms of the turbine blades that can also move. Thus, on the return stroke the air can flow between the blades. The diagram below (a top down view) may explain (or may not!):


adreama said...

This concept is in use by the Ocean Energy Turbine. See:

adreama said...

It's also used by the Migler Whirlwind from Migler Windmills (Bernard Migler):