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young curly blonde girl wearing a headband in the wind farm with wind turbines

Young Curly Blonde Girl Wearing A Headband In The Wind Farm With Wind Turbines

Subtypes of the vertical axis design include:
- Darrieus wind turbine
"Eggbeater" turbines, or Darrieus turbines, were named after the French inventor, Georges Darrieus. They have good efficiency, but produce large torque ripple and cyclical stress on the tower, which contributes to poor reliability. They also generally require some external power source, or an additional Savonius rotor to start turning, because the starting torque is very low. The torque ripple is reduced by using three or more blades which results in greater solidity of the rotor. Solidity is measured by blade area divided by the rotor area. Newer Darrieus type turbines are not held up by guy-wires but have an external superstructure connected to the top bearing.

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Filename:478092.jpg
Album name:Babes
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Keywords:#young #curly #blonde #girl #wearing #headband #wind #farm #turbines
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Date added:May 11, 2012
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