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Non-Tech : Alternative energy -- Ignore unavailable to you. Want to Upgrade?

To: Eric who wrote (6479)	5/9/2009 8:53:38 PM
From: The Vet	Respond to of 16955

Bird kills have been a much bigger problem with small diameter turbines than the big ones. I suspect that is because the tip speeds are similar with all turbines but the rpm of the smaller ones is greater meaning that in the region swept by the tips there is a greater chance of collision. Rather like the concept of stepping though the line of fire of a machine gun and not getting hit. There are many feet between each bullet which increases as the rate of fire decreases even if the velocity of the bullet is unchanged. In theory you could just step through without getting hit if you timed it right and your chances improve as the rate of fire slows. Don't try this at home!