Team Volunteers Matt Rhule Tony Carr Kevin Black David Young

Overview We used plexiglass for the frame. We used 4 magnets inside the frame wrapped with magnetic wire on the outside. We attached the fan to the metal rod and stuck it through the frame.

Mechanical and Electrical Aspects Mechanical – The wind hits the fan and causes the blade to spin. – The fan then turns the rod that the magnets are attached to. Electrical – As the magnets spin, a magnetic field creates a current. – The current then runs through the wire which is connected to the light bulb to turn it on.

Calculated Efficiency η (Efficiency in %)= (Actual Power / Theoretical Power) * 100 Theoretical Power = Power of fan = ½ρAv³ = ½( kg/m³)(.0113 m²)( m/s)³ = watts Actual Power = Power of generator = IV = (0.18 amps)(3.6 volts) = watts (0.648 watts)/( watts) * 100 = % Efficiency

Construction/Design Issues The original design failed to produce a current, probably due to faulty magnets or wiring. The original casing hindered easy development and wasn’t stable. In both designs, the blade is a little heavy, causing friction and less power generated.

Conclusion Despite having to redesign the windmill, the project was successful, correctly lighting up a light bulb. Worked well in a group and learned about current, electricity, and basic generator design.