Transcript Team-Pain

Team Pain
David Brundage, Kelli Byrne, Adam
Watkins, and Benjamin Wing
Key Lime Pie
• 30-gauge insulated
•
•
•
copper wire
500 turns around a
magnet connected to
plastic axle
5 fan blades at an angle
attached to a wooden
pole
Large gears attached to
the wooden pole connect
to small gears on the axle
with the magnet
Mechanical
• Fan blades
• Axel
• Gear Ratio
• Double Gears
• Wind
Electrical
• Permanent
Magnetic field
• Induced electrical
field
• Current Voltage
• Light Bulb
Resistor
Calculations
• Estimated Efficiency
P = (1/2) (ρ) (A) (v)3
• A- rotor swept area (m2)
• ρ- air density (about
1.225 kg/m3)
• v- wind velocity (m/s)
• P- power (watts)
Efficiency= P generated/
Potential P
η=[(I)(V)]/[(1/2)(ρ)(A)
(v)3]
A=pi()*(.25m)2=.19635
m2
ρ=1.225 kg/m3
v= 15 mph=6.7056m/s
I=.073 A
V=3.1 V
η = .624072 %
Bill of Materials
• 2 High strength dime magnets ($2.00)
• 30 gauge insulated copper wire ($5.00)
• Wood ($3.00)
• Poster board ($2.00)
• Gears ($1.50)
• Total = $13.50
Construction Issues
• Generator at first didn’t work
• Stability and vibration
• Housing Structure
• Crappy nails
• Inadequate materials
• Sarcastic teammates
Conclusions
• Windmills are a very practical way to
harness energy from a natural resource
• Construction of a windmill from scrap is
difficult