Re: [a-w-h] Teeter Hinge
- At 6:33 PM +0000 28/2/03, Adam Brothers wrote:
>Hello,Large wind turbine blades see big differences in windspeed as they
>I was just wondering, why do small 2 blade turbines not utilise a teeter
>hinge as seen on all large scale 2 bladers? May be i am missing the point
>but i would have thought that fatigue life was of major concern in small
>turbines due to the great number of stress cycles they see in a relativly
>Anyone care to shed some light on this?
sweep across large areas. Wind shear means that the wind is much
higher during the upper part of the swept area. Small turbines do
not suffer these forces. There are some gyroscopic forces in yaw
instead. But a teetering hinge leads to unstable behaviour for
machines with offset furling systems.
Some pitch controlled blades have coning hinges but they are usually
On the Isle of Lismore
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