1. Theoretical Consideration Choose the best design Study the efficiency of energy conversion at specific speed. Power Coefficient Tip Speed Ratio Conversion from Mechanical to Electrical Power

2. Theoretical Consideration Control Variables – Pitch & Twist Angle (determines C d & C l ) – Air-foil Design Input – Current (= Torque) – Ambient Flow (=Fan Speed) – Blade’s Angular Velocity(=Motor Speed) Output – Torque Constants – Air Temperature & density, – Atmospheric pressure (=Reynold’s Number)

3. Generator on CalTrain/Bart 80mph (130km/h) 10cars Rail Cost/passenger mile $0.323 Daily Ridership = 346504 Attach 10 AB rotors/car Aid the electricity amount