A wind turbine is basically made up of three parts: A giant tube, 3 big blades and a nacelle (which is the name for the thing that sits at the top of the giant tube and holds the blades in place).
I had never heard the word “nacelle” before we visited Jiminy Peak, so I decided to figure out what it’s all about. So … It’s, “A streamlined enclosure (as for an engine) on an aircraft.” Here’s how Miriam Webster breaks down the etymology: “French, literally, small boat, from Late Latin nacicella, diminutive of Latin navis ship” (apologies if this is only interesting to me).
The thing is about the size of a school bus and holds all those parts you can see above. It’s pretty much the guts of the turbine.
[...] They run at a constant 22rpm (or as close it as possible), which they maintain by pitching the blades and turning the Nacelle. [...]