Have you noticed that eolic turbines have 3 blades?
Old wind mills used to have more than 3, right?
After many different options we seem to have decided for three blades. Regarding modern wind farms it’s all about cost-benefit. More blades would help to produce more energy but at the same time they would make the whole thing a lot heavier. So why no two? It’s lighter than three! Check the following informative video and find out the answer.
RMach
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