A nacelle is a cover housing that houses all of the generating components in a wind turbine, including the generator, gearbox, drive train, and brake assembly.
A notable feature now found on some offshore wind turbines is a large sturdy helicopter-hoisting platform, or helideck, built on top of the nacelle, capable of supporting service personnel and their tools, winched down to the platform from a helicopter hovering above it.Eize de Vries. Close up: Alstom Haliade 6MW Prototype, Windpower Monthly, 11 July 2012. Wind turbine rotors are stopped, feathered and locked before personnel are dropped down to or picked up from the platforms.
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