Wind turbine nacelles (generator housings) are mounted on turntables. An anemometer and wind vane on top each nacelle continuously gathers wind velocity and direction data and sends it to a computer. The computer then "aims" the nacelle via a motor geared to the turntable based on the wind data.
You can see the wind data instrumentation to the left of the red anticollision beacon in this photo. (Turbine is one of 18 General Electric 1.5 megawatt units at the Fenner, NY wind farm)
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Today's Featured Article - Identifying Your Tractor - by Staff. Maybe you bought it from a friend who didn't know what kind of tractor it was, or perhaps (and this is every tractor fanatics dream) you stumbled across it in an abandoned field covered with weeds but intact. In any case, you have no idea what the make and/or model is. For awhile perhaps it doesn't really matter. Especially if it runs! But pretty soon you'll probably need to tinker with it a bit and maybe buy a part or too. Having a manual is nice. But how does one go about dete
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