Can you design a better windmill?


AC1503 photos on flickr
AC1503 videos on you tube
Our Design
Paper plate and coctail sticks. Flower shape.
Our Experiment
Tried it with lots of different speeds, and fans.

Reading 1 Current [10.5] mA
Reading 2 Current [11.3] mA
Reading 3 Current [11.7] mA
Reading 4 Current [11.9] mA
Average Current = [11.35] mA
Windspeed at fan = [1.7] ms-1
Resistance = [100] Ohms
Power = 0.01288w

So with a windspeed of [1.7] our turbine generates an average current of [11.35] mA delivering [12.88]mw so in 10 minutes it could generate [12.88*600] mW.

If playing music on an iPod classic consumes about 77mW per second, 10 minutes of turbine time (assuming 100% energy transfer efficiency) can power [100] seconds of playback time, enough to listen to about [0.6] 3 minute songs.

With more power, you should have less blades and more surface area. With less wind speed you might get more power than otherwise with more blades.

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