A shape adaptive airfoil for a wind turbine blade

Daynes, S and Weaver, P 2011, 'A shape adaptive airfoil for a wind turbine blade', in Kevin M. Farinholt; Steve F. Griffin (ed.) Proceedings of the Industrial and Commercial Applications of Smart Structures Technologies Conference 2011, San Diego, United States, 7-8 March 2011, pp. 1-11.


Document type: Conference Paper
Collection: Conference Papers

Title A shape adaptive airfoil for a wind turbine blade
Author(s) Daynes, S
Weaver, P
Year 2011
Conference name Industrial and Commercial Applications of Smart Structures Technologies 2011
Conference location San Diego, United States
Conference dates 7-8 March 2011
Proceedings title Proceedings of the Industrial and Commercial Applications of Smart Structures Technologies Conference 2011
Editor(s) Kevin M. Farinholt; Steve F. Griffin
Publisher SPIE
Place of publication San Diego, United States
Start page 1
End page 11
Total pages 11
Abstract The loads on wind turbine components are primarily from the blades. It is important to control these blade loads in order to avoid damaging the wind turbine. Rotor control technology is currently limited to controlling the rotor speed and the pitch of the blades. As blades increase in length it becomes less desirable to pitch the entire blade as a single rigid body, but instead there is a requirement to control loads more precisely along the length of the blade. This can be achieved with aerodynamic control devices such as flaps. Morphing technologies are good candidates for wind turbine flaps because they have the potential to create structures that have the conflicting abilities of being load carrying, light-weight and shape adaptive. A morphing flap design with a highly anisotropic cellular structure is presented which is able to undergo large deflections and high strains without a large actuation penalty. An aeroelastic analysis couples the work done by aerodynamic loads on the flap, the flap strain energy and the required actuation work to change shape. The morphing flap is experimentally validated with a manufactured demonstrator and shown to have reduced actuation requirements compared to a conventional hinged flap.
Subjects Composite and Hybrid Materials
Keyword(s) Morphing trailing edge
load control
anisotropy
aeroelasticity
composites
wind turbine
variable camber.
DOI - identifier 10.1117/12.879208
Copyright notice © (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE).
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