| ▲ | Why do wind turbines have three blades?(thekidshouldseethis.com) | |||||||
| 8 points by greedo 12 hours ago | 3 comments | ||||||||
| ▲ | jefurii 12 hours ago | parent | next [-] | |||||||
Is it related to automobile wheels always seeming to have odd-numbered spokes? | ||||||||
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| ▲ | sema4hacker 12 hours ago | parent | prev [-] | |||||||
TL,DR: three blades (1) are a good balance of torque against drag at different speeds, (2) help reduce unbalanced forces compared to two-blade turbines, and (3) provide visual balance, smoother motion, and quieter operation to improve community acceptance. | ||||||||