1. THE WONDER WHEEL Claire Fage, Jared Smith, Brittani Perez, Bryan Fly, Rusty Castleberry

2. Team Members Left to right: Jared Smith, Claire Fage, Rusty Castleberry, Bryan Fly, Brittani Perez

3. Initial Ideas Fan blades out of Coke cans The axel would turn a series of gears, which would turn the generator Vertical standing windmill Three bladed fan PVC pipe generator

4. Supply List Scrap Wood----Free Balsa Wood----$4.86 Copper Wiring----$11.99 Wood Glue----Free Dowel Rods----Free Magnets----$5.99 Styrofoam Circle----$1.89 Electric Tape----Free

5. Design / Construction Constructed generator using particle board, copper wire, and magnets Placed a dowel rod through the center of the generator, and than placed the magnets on top of the rod with spacers Constructed a wooden frame from scrap wood to hold the dowel rod in place Constructed an axel with 5 balsa wooded fan blades, attached them to a circular Styrofoam centerpiece, and attached to the wooden frame

6. Calculations Velocity = (16 π ) /.2sec = 251.327 in/sec Acceleration = 251.327 / 1sec = 251.327 in/sec² = 6.382 m/sec² F = (.35kg)(6.382 m/sec²) = 2.2343 N P = (Fd)/t = [(2.2343 N)(16 π /39.37)] / (1sec) = 2.8526 W Produces.5V = J/C U = ½CV² = ½(3.6 C)(.5)² =.45 J actual U = 2.8526 = ½(3.6)(V)² V possible = 1.259V.5V x 100 = efficiency 1.259 40% = EFFICIENCY Mass of Fan = 35 grams Radius = 8 inches Circumference = 16 π 1 meter = 39.37 inches Ferrite magnet Charge on the magnet: 3.6C

7. Problems Generator: ◦ Initially used PVC pipe: too thick. ◦ Magnet spinning wrong direction. ◦ Dimension adjustments due to friction within generator box. Windmill: ◦ Fan blades breaking. ◦ Styrofoam unstable. ◦ Issues with fan blades staying put. ◦ Not producing enough voltage to light bulb Solutions: ◦ Consulted as a team when problems happened to figure out solutions ◦ Remade generator box ◦ Double glued the fan blades on ◦ Continually tested until we achieved the desired outcome

8. Final Design