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

submitted 10 months ago by jackpot@lemmy.ml to c/asklemmy@lemmy.ml

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[–] Kwdg@discuss.tchncs.de 89 points 10 months ago (2 children)

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

[–] Bishma@discuss.tchncs.de 115 points 10 months ago* (last edited 10 months ago) (2 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 10 months ago (3 children)

So HAWT in here!

[–] LadyLikesSpiders@lemmy.ml 8 points 10 months ago

Horizontal Axis WInd Turbines. So HAWT right now

[–] bloopernova@programming.dev 7 points 10 months ago (1 children)

So take off all your clothes!

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[–] NorthWestWind@lemmy.world 3 points 10 months ago

This has drifted so far away from the original question

[–] Raxiel@lemmy.world 6 points 10 months ago

I don't know why, the big fan is on

[–] CanadaPlus@lemmy.sdf.org 13 points 10 months ago

So TL;DR it's worth the extra bearing for the added efficiency unidirectional wind flow allows.

[–] mx_smith@lemmy.world 1 points 10 months ago

Didn’t one fall over a while back in NYC area?