ScienceDaily
April 28, 2011
Only when you are standing beside a wind turbine can you appreciate the immense size of the wind turbine and its rotor blades. The largest wind turbines operating in the world today have rotor blades over 60 meters long roughly equivalent to three truck-and-trailer units end-to-end. Within the next ten years, manufacturers of high-output wind turbines for offshore wind farms plan to produce blades up to 90 meters long. The prototypes of these new blades have to be tested and certified before they can go into production, and that requires equally as large testing facilities.
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