Wind Turbine

The rotor with the most power was my first turbine because the material was less flimsy and the blades kept their twisted shape more than the second turbine's.

The windmill with the maximum output was different than mine because theirs had long and skinny blades when mine had short and wide blades.

One limitation of my best turbine was that one blade kept untwisting making some spins inconsistant because the spinning would slow down everytime the wind hit that blade. Another limitation was the tinfoil over the fivestar notebook material was a little bumby causing more friction which slowed down the turbine.

Airplanes and windmills use airpressure to fly and rotate because of Bernalli's Principle. The high pressure wants to move to move to the blades/wings which helps the blades spin or give the airplane lift.

It was necessary to twist the rotor blades at an angle because it gave a place for the air to slide off the blades and escape after hitting the blades. It also helps the blades catch the wind and keep them spinning.

The rotors on a windmill and the sails on a sailboat illustrate the same principle because the blades on a windmill are curved to help catch the wind and move in a specific direction. Sailboat sails use the same principle becasue the sails are curved and once the sails catch the wind the boat moves in a specific direction.