Components: Blades

Both models of turbines to be built will use reinforced fiberglass composite blades with built-in UV protection and water resistance.  The manufacturer's specifications are given below:

8 Foot Turbine

Rated Wind Speed: 17.9 mph (8 m/s)
Start-up Wind Speed: 6.7 mph (3 m/s).
The Power Coefficient (CP) is 0.49, which is much higher than wood blade's CP fo 0.25~0.35.
Tip Speed Ratio (TSR): 8 (constant) at small to normal generator loads.
Weight: 4 lbs per blades

12 Foot Turbine

Rated Wind Speed: 22.4 mph (10 m/s)
Start-up Wind Speed: 3 m/s or 6.7 mph
The Power Coefficient (CP) is 0.49, which is much higher than wood blade's CP fo 0.25~0.35.
Tip Speed Ratio (TSR): 8 (constant) at small to normal generator loads.
Weight: 12 lbs per blades
4 Foot Blades 6 Foot Blades