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Based on my personal observations, newer windmills seem to have three blades while older ones tend to have four or even more. This questionThis question has excellent discussion on my three is an optimal number. But what changed? For example, did people at some point not understand the relevant tradeoffs? Or does the availability of some new material shift the economics to favor fewer, longer blades?

Old-fashioned and new-fashioned windmills

Based on my personal observations, newer windmills seem to have three blades while older ones tend to have four or even more. This question has excellent discussion on my three is an optimal number. But what changed? For example, did people at some point not understand the relevant tradeoffs? Or does the availability of some new material shift the economics to favor fewer, longer blades?

Old-fashioned and new-fashioned windmills

Based on my personal observations, newer windmills seem to have three blades while older ones tend to have four or even more. This question has excellent discussion on my three is an optimal number. But what changed? For example, did people at some point not understand the relevant tradeoffs? Or does the availability of some new material shift the economics to favor fewer, longer blades?

Old-fashioned and new-fashioned windmills

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Removed parts of question already answered by http://physics.stackexchange.com/questions/11194/wind-generators-why-so-few-blades
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kuzzooroo
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What determines how many blades a windmill should Why do some (older) wind generators have more than three blades?

Based on my personal observations, newer windmills seem to have three blades while older ones tend to have four or even more. Or perhaps theThis question has excellent discussion on my three is an optimal number of blades isn't determined by when the windmill was made but by some other variable. What areBut what changed? For example, did people at some point not understand the determining factors behindrelevant tradeoffs? Or does the numberavailability of some new material shift the economics to favor fewer, longer blades a windmill has?

Old-fashioned and new-fashioned windmills

What determines how many blades a windmill should have?

Based on my personal observations, newer windmills seem to have three blades while older ones tend to have four or even more. Or perhaps the number of blades isn't determined by when the windmill was made but by some other variable. What are the determining factors behind the number of blades a windmill has?

Old-fashioned and new-fashioned windmills

Why do some (older) wind generators have more than three blades?

Based on my personal observations, newer windmills seem to have three blades while older ones tend to have four or even more. This question has excellent discussion on my three is an optimal number. But what changed? For example, did people at some point not understand the relevant tradeoffs? Or does the availability of some new material shift the economics to favor fewer, longer blades?

Old-fashioned and new-fashioned windmills

Source Link
kuzzooroo
  • 287
  • 1
  • 6

What determines how many blades a windmill should have?

Based on my personal observations, newer windmills seem to have three blades while older ones tend to have four or even more. Or perhaps the number of blades isn't determined by when the windmill was made but by some other variable. What are the determining factors behind the number of blades a windmill has?

Old-fashioned and new-fashioned windmills