Wind Turbine Blade

Wind Turbine Blade

Short Description: 
123 foot blade installed vertically near the entrance to the Eco Experience building at the Minnesota State Fair.
Interpretive Text: 
  • How big is that wind turbine blade out in front of the building? 123 feet.
  • What kind of turbine would this blade be placed on? 1.5 MW wind turbine.
  • How much does it weigh?  Roughly 6 tons.
  • What is it made of?  Fiberglass composite.
  • How did it get here? It was a surplus blade from the LM Glasfibre factory in Grand Forks, ND. It is the first blade in the country to be installed into the ground vertically as a sculpture. Many companies donated labor and services to get this wind sculpture in place. It was  installed in 2006.
  • How big are wind turbines? Wind turbines come in a variety of sizes, depending upon the use of the electricity produced. A large, utility-scale turbine may have blades over 165 feet (50 meters) long, meaning the diameter of the rotor is over 325 feet (100 meters) – more than the length of a football field. (So, the blade located outside the building is a good reference). The turbines might be mounted on towers 262-325 feet (80-100 meters) tall (one blade would extend about half way down the tower). An average figure to go by is that turbines can stand as tall as 300-475 feet tall when one of the blades is sticking straight up.   (For a visual comparison, the Minnesota State Fair Space tower is 340 feet tall.)

A residential- or farm-sized turbine is designed to supply part of the electricity used by a home or business and is much smaller. The blades may range from as small as 4 feet to as long as 50 feet and be mounted on a metal lattice tower up to 165 feet (50 meters) tall. When one of the blades is sticking straight up, these turbines can average 120-200 feet in height.  

Subject: 
mechanical parts
Date Created: 
2006
Creator: 
Windustry
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