Re: [OM] OT: Our new wind turbine

[Ken Norton]

> I think that the boundary layer is around 5m deep, Ken.  But I'm sure that a 
> taller one would receive more wind; it's a matter of what will be allowed: we 
> had to deal with radar, aircraft and people in getting this one allowed.  
> Remember that it's in a crowded bit of countryside.  If you look up Gamlingay 
> on Google maps you'll see how close we are to airfields and people.

The big-honkin ones we grow here have to be tall enough to clear the
corn. That's just one of the problems here. We also get a pretty
significant directional sheering from the surface drag. As the blades
keep getting longer the entire disk is subject to a wide range of wind
speed and direction. It's not uncommon to have a 30 degree shift in
wind direction from the top of the disk to the bottom of the disk.

--
Ken Norton
ken@xxxxxxxxxxx
http://www.zone-10.com
-- 
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