THE WONDER WHEEL

# THE WONDER WHEEL

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## THE WONDER WHEEL

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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 Mass of Fan = 35 grams Radius = 8 inches Circumference = 16π 1 meter = 39.37 inches Ferrite magnet Charge on the magnet: 3.6C • Velocity = (16π) / .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)(16π/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

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