1. Cabrillo College Engineering 5

2. What are the different kinds? How do they work? Build your own windmill Test its power output

6.  Savonious, Horizonatal & Darrieus Wind Turbines Savonious, Horizonatal & Darrieus Wind Turbines

7.  Joby Energy Airborne Windturbines  http://www.jobyenergy.com/tech http://www.jobyenergy.com/tech  Japanese Wind Power Breakthrough  http://www.mnn.com/green-tech/research- innovations/blogs/japanese-breakthrough-will- make-wind-power-cheaper-than- nuclea?hpt=hp_bn11 http://www.mnn.com/green-tech/research- innovations/blogs/japanese-breakthrough-will- make-wind-power-cheaper-than- nuclea?hpt=hp_bn11  Maglev Windturbines http://inhabitat.com/super-powered-magnetic- wind-turbine-maglev/ http://inhabitat.com/super-powered-magnetic- wind-turbine-maglev/  http://www.maglevwindturbine.com/ http://www.maglevwindturbine.com/

8.  Solar Powered !  Wind moves blades  Blades turn generator  DC current generated by rotating coil & magnets

9.  P = Power (Watts)  ρ = Density of air (kg/m 3 )  A = Swept area (m 2 )  V = Wind speed (m/s) The Power of Wind

10.  Power = Current x Voltage  You will use a Multimeter to measure the current and voltage while your windmill is spinning  Watts = Amps x Volts

11. ? Design to Optimize

12.  Name of your Windmill  Current measured in Amps  Voltage measured in Volts  Calculate Power: Watts = Amps x Volts  Diameter of Blades in cm

13.  Paper  Bamboo Skewers  Hot Glue  Cork Hub

14.  Discuss the pros and cons of at least three designs with your team before beginning construction.  Select the favored design and construct it on the cork hub attached to the generator.  Test your design at the testing station.  Iterate: Can you imagine changes that would capture more power?

15.  Horizontal Axis TurbinesThe Wind Ninja Horizontal Axis Turbines  Savonious photos Pegasus Savonious photos Pegasus  Darrieus photo World of Energy Wind Power Darrieus photo World of Energy  Off The Grid Living Off The Grid Living  Estonian Windmill Estonian Windmill  Helix Wind Helix Wind