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why dont windmills spin on the vertical axis as that would be omnidirectional for wind? (lemmy.ml)

submitted 2 years ago by jackpot@lemmy.ml to c/asklemmy@lemmy.ml

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[–] Kwdg@discuss.tchncs.de 89 points 2 years ago (9 children)

This actually exists https://en.m.wikipedia.org/wiki/Vertical-axis_wind_turbine

[–] Bishma@discuss.tchncs.de 115 points 2 years ago* (last edited 2 years ago) (7 children)

Here's the specific bit relavent to OP's question:

VAWTs often suffer from dynamic stall of the blades as the angle of attack varies rapidly.

The blades of a VAWT are fatigue-prone due to the wide variation in applied forces during each rotation. The vertically oriented blades can twist and bend during each turn, shortening their usable lifetimes.

Other than the drag-types, VAWTs have proven less reliable than HAWTs,[20] although modern designs have overcome many early issues.

VAWT = vertical axis wind turbine

HAWT = horizontal ...

[–] ChicoSuave@lemmy.world 37 points 2 years ago (5 children)

So HAWT in here!

[–] LadyLikesSpiders@lemmy.ml 8 points 2 years ago

Horizontal Axis WInd Turbines. So HAWT right now

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