Do the Twist!!!

1. Do the Twist!!!

2. Our Team: Neal Baltuth, Amanda Ollish, Lily Crabtree, and Charlton Pence

3. Project Design • Cone shaped cups are mounted on 3 horizontal rods connected to a vertical shaft • The shaft goes through a hollow cylinder with copper wire wrapped around the inside of the cylinder • In the middle of this cylinder connected to the shaft are two magnets

4. Mechanical Aspects • The cone shaped cups attached to horizontal rods catch the wind energy that in turn spins the vertical shaft creating mechanical energy • The vertical shaft is passed through the cylinder which is held in place by wooden supports to eliminate wasted energy

5. Electrical Aspects • There are two spinning magnets, whose north-south pole rotation inside a copper coil creates an alternating current. • This current flows through the two wires at the end of the coil to light the LED bulb.

6. Efficiency Calculations • Our theoretical power output is calculated as follows: • P = .5 x rho(air density) x A(rotor area) x V(wind speed) = .2603 W • E(efficiency) = P / [(.5)(rho)(V^3) = .25 or 25% efficient

7. Design/Construction Issues • First used regular copper wire coil that didn’t produce much voltage at all, so we got magnetic wire and saw immediate results • We ordered very powerful magnets that got lost in the shipping process, so we just purchased some extra-strength magnets

8. Conclusions • The best way to construct something is to make alterations while building it instead of deciding on the perfect design • We had to do a good amount of research concerning generators and how they worked • If your teammates schedules conflict divide up the work