Download Two-Propellers-One

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
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•
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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.