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rob, Sun 1 Apr 2001, 1:00)
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HmmFor the very biggest turbines, maybe. If the blades were 40m long it would have to be spinning at 81rpm to break the speed of sound. A smaller turbine would have to spin far faster, but I'm really not sure that drag forces would let them get that fast except in a hurricane...
I should clarify - I'm not saying you're wrong, just that I think problems would start to occur way before the blades got to "speed of sound" levels.
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Hdjejjwsjdjjf LOOK, Thu 9 Dec 2010, 22:42,
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