Figure 27 Wind turbine rotor spinner, © MHI Vestas Offshore Wind.
Function
The spinner, also known as a nose cose, provides environmental protection to the hub assembly and access into the hub and blades for maintenance personnel.
What it costs*
The spinner cost varies significantly with rotor design.
Who supplies them
Bach Composites Industry, Eikboom.
Key facts
Generally, the spinner is made from fibreglass in sections and bolted together on a galvanised steel frame. Fibreglass cuffs are frequently fitted round blades to provide environmental protection to blade bearings.
Consideration is given to maintenance activities in and around the hub when designing the spinner. In some cases, personnel access is needed between the spinner and hub.
The spinner may be up to about 10 m diameter.
What’s in it
- Fibreglass mouldings
- Fabricated steel support frame