A favorite satellite photo of an experimental wind turbine project in Iowa. What luck to have a straight down photo at the exact moment the sun angle was just right to give an un-distorted shadow (yes that is the shadow!) of the slow speed wind turbine. The 50 kW grid-connected DC generator appears as a small dot on the right side where the mast shadow meets the wheel shadow. The actual turbine is the silver shape in the corner of the green grass. This was a very interesting renewable energy project. The experimental generator in Iowa was programmed and monitored, via internet, from Maine. Thanks, NASA! – cnt, from the Raven period…
