# Do the Twist!!!

```Do the Twist!!!
Our Team: Neal Baltuth, Amanda Ollish, Lily
Crabtree, and Charlton Pence
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
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
Electrical Aspects
 There are two spinning
magnets, whose northsouth 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.
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
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
Conclusions
 The best way to construct
something is to make alterations