Some eighty-three years ago, aircraft pilot Major Kurt Bilau (formerly of the Imperial German Air Corps) was intrigued by the abilities a properly designed propeller; he applied his curiosity to the design of a windmill in order to experiment with the possibility harnessing the power of the wind as a source of energy.
This magazine article briefly explains what a success that experiment was. Bilau's "aerodynamo" was able to convert a sixteen-mile per/hour wind into an amount of energy that was measured at sixty horse power.
