Sasha Clark Ilona Molotoka Alexandria Butler Shanel Crawford-Harris

Generator Base Dowel Rod Windmill

Our generator creates an electromotive force (emf) which calculates the energy gained per unit of charge in volts. The magnets inside the generator creates a magnetic field. The fan spins our windmill, therefore rotating our magnet to create an induced current which will hopefully light our light bulb. The mechanical energy is converted to electrical energy.

P=½APv^3 Velocity = 8 m/s ρ is the density of air, which is 1 kg/m 3. Area of one blade:((length of one blade)^2)*π. Length of one blade: 7.25 in =.184 m Using that equation and our results, we get: P=½ (kg/m^3)(.184m)^2(π)(8m/s)^3= W That value is the ideal power from the air going into the generator in a perfect system, our actual power is much lower, because energy is lost due to friction. The voltage and resistance of the generator: P=v^2/R P=(.3)^2/45.7=.00196watts Efficiency = Power (Actual)/Power (input)=(.00196/27.23)*100=.007% The generator works through electromagnetic induction. By spinning the magnet, we change magnetic field which induced a voltage in the coil.

Propellers did not work at a constant velocity. Base rod broke. Weak magnet. Magnets bumping the inside of the box.

This project helped us: Understand and apply the concepts of electricity, wind speed, and power. Use alternative resources to help build our project successfully. Work together as a team towards a common goal.