10 Dec '11, 1am

A Tougher and Lighter Wind Turbine Blade Design

A Tougher and Lighter Wind Turbine Blade Design

Wind turbine blade being transported by trailer. A researcher from Case Western Reserve University has designed a stronger and lighter wind turbine blade design. First, a little insight into the issue of blade strength: As superior as large wind turbines are where cost and performance are concerned, the weight of their blades can cause problems. It is difficult to make such long (more than 200-feet in diameter) blades strong enough to bear their own weight, and especially at high speeds (explanation below). There is a tendency of objects in general to resist a change of speed (velocity) – called inertia . It affects everything that moves. When the wind turns a wind turbine blade, the rest of the blades are forced to move with it since they share the same hub (the rotating part at the center of the turbine). However, the weight of the blades impedes that by holding them bac...

Full article: http://cleantechnica.com/2011/12/09/a-tougher-and-lighter...

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