Wind Turbines

1. Which rotor had the most power and why?
My 3 bladed turbine worked the best.  It worked best because it had more wings to catch the wind and create more power.
2. What is the difference in the design that had the most outout?
 The wind turbine that had the most output had long and skinny blades. My blades were short and fat.
3. What are the limitations to your model?
My blades were short and fat so they lost alot of energy and did not catch as much wind as the others.
4. How do an airplane and windmill use air pressure to fly and rotate?
Both blades have a angle to them that when the wind catches the curve it creates lift.
5. Why was it necessary to twist the rotor blades at an angle?
So that the blades can catch the wind and make them move.
6. Explain how the rotors on a windmill and the sail of a sailboat illustrate the same principle?
The blades and sail both have a curve/ angle to it so that it can catch the wind.  They both use lift to move.

Mass	Height	Energy	Power	Time
40 grams	.085 meters	33.38	16.69 watts	2 seconds