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Crazy Horse:
From Wiki:  For a given survivable wind speed, the mass of a turbine is approximately proportional to the cube of its blade-length. Wind power intercepted by the turbine is proportional to the square of its blade-length. The maximum blade-length of a turbine is limited by both the strength and stiffness of its material.
Except that there's no reason why the thickness of a turbine blade needs to be proportional to the length.

Do you have examples of actual blade dimensions and materials for wind turbines of different nominal power?

We have met the enemy, and he is us — Pogo

by Migeru (migeru at eurotrib dot com) on Sat Dec 15th, 2007 at 03:42:51 PM EST
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