Quote:
Originally Posted by freebeard
If the wind shadow is really a problem, why don't they boat tail the tower?
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The towers are fixed. But the wind shifts. Only the top nacelle with the blades pivots to face the wind. Wind turbines always have an odd nuber of blades because the wind is much stonger at the top than it is lower down near the ground. So when one blade is straight up in the best position, there are two that are not quite in the worst position to equalize the loads as much as possible to minimize rocking forces at the hub.