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Two Propellers, One Generator Casey Kopko Alex Groner Josh Dunn Ben Prichett Overview • Wind from fan turns the blades causing the magnets to spin inside the copper wire, producing electricity • Generator consists of plexiglass, copper wire, and six magnets • Frame built out of wood • Plastic Blades from model airplane How It Works • • • • Wind turns propellers Propellers turn shaft Shaft turns magnets Magnets excite electrons producing electricity • Electricity powers the light bulb Design • Used sturdy materials for frame • Two propellers were used to maximize surface area • 600 turns of 26 gauge wire • Six magnets centered on shaft inside wiring • On/off switch added to test voltage and amps with and without the light bulb Calculations • We used the equation to calculate the power going into the generator from the wind(29.9 Watts) • By using the equation we were able to find the actual power generated(.274 Watts) • Using these two powers, we were able to determine the efficiency of our windmill • Construction Issues • Getting magnet to stay centered on shaft • Finding correct materials to use for generator box • Having the blades inhibited due to friction or lack of surface area • Stabilizing generator on top of frame Conclusion • Total cost was approximately $31 • Light bulb did light successfully • Learned how generator functions and how to harness wind energy • Efficiency was .917% and therefore not very efficient.
