A shape adaptive airfoil for a wind turbine blade

S Daynes, PM Weaver

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

21 Citations (Scopus)

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.
Translated title of the contributionA shape adaptive airfoil for a wind turbine blade
Original languageEnglish
Title of host publicationSPIE Smart Structures/NDE, San Diego, CA
EditorsKevin M. Farinholt, Steve F. Griffin
Pages1 - 11
Number of pages11
Volume7979
DOIs
Publication statusPublished - 8 Mar 2011

Bibliographical note

Name and Venue of Event: Town and Country Resort and Convention Center
Conference Organiser: SPIE
Other: Industrial and Commercial Applications of Smart Structures Technologies 2011

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