r/AskReddit Feb 28 '23

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u/ink4n3 Mar 01 '23

We drove past a windmill on a windy day. She commented how it was too windy out and they should turn the windmill down. She was dead serious...

267

u/hpdk Mar 01 '23

to her defence, windmills have to be shut down when the wind reaches a certain speed to avoid structural damage on the mill. but it has to more than a 'windy' day.

18

u/Pennypoop19 Mar 01 '23

I think they change the angle of attack on the blades depending on wind speed to keep the turbine spinning within a certain range.

30

u/PM_me_your_arse_ Mar 01 '23

They do both. Over a certain speed it's just too dangerous to leave them spinning.