Why do fans (and propellers) have different numbers of blades? What advantage is there to more or less blades?

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An actual question my five year old asked me and I couldn’t answer, please help!

In: Physics

25 Answers

Anonymous 0 Comments

One video I remember and is kind of relevant (wind turbines) could maybe help you slightly.

I don’t know how to link on mobile but the video is on YouTube by “Real Engineering” and is called “why do wind turbines have three blades”. There’s also a second video with the same title on the channel called “DOB-Academy studio”. They give you some more info.

The videos should take you around 3 minutes to watch and they can explain the topic much better than me.

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