Can you design a better windmill?
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kh11010703

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Our Design
s shaped yellow one

Our Experiment
we tried moving the generator to allow this one to rotate around a vertical (and horizontal) axis but it didn't want to turn

Results
we sadly didn't get any energy out of this one.

Reading 1 Current [ ] mA
Reading 2 Current [ ] mA
Reading 3 Current [ ] mA
Reading 4 Current [ ] mA
Average Current = [I ] mA
Windspeed at fan = [s ] ms-1
Resistance = [R ] Ohms
Power = I * I * R (remember to convert mA to A)

So with a windspeed of [s ] our turbine generates an average current of [I ] mA delivering [P ] (convert W to mW) mW per second so in 10 minutes it could generate [P * 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 [ ? ] seconds of playback time, enough to listen to about [ ? ] 3 minute songs.

Thoughts
REPLACE THIS WITH YOUR THOUGHTS: HOW COULD YOUR WINDMILL BE IMPROVED, HOW COULD THE EXPERIMENT BE IMPROVED, IS 100% EFFICIENCY ENERGY TRANSFER REALISTIC, WHAT WOULD YOU ASK AN EXPERT, HOW CAN TECHNOLOGY SUPPORT SCIENCE TEACHING AND LEARNING, ETC...

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