Abstract
In the ongoing work to increase the efficiency of large-scale, horizontal-axis wind turbines, the modular blade concept has been proposed. This article works toward quantifying the aerodynamic performance of modular blades, whose baseline profile remains unchanged from conventional blades but which are susceptible to a larger degree of variation in both manufacturing tolerances and fabrication materials, by examining the effects of offsets in the leading edge and the use of a tensioned membrane-fabric as a flow surface over the aft. Wind tunnel tests were performed on modified DU00-W-212 and DU91-W2-250 sections and included standard pressure measurements, as well as surface deflection measurements of the fabric. For the case of offsets near the nose of the profile, the offsets produce up to 17% decrease in [Formula: see text]. For the case of fabric in the aft of the model, the [Formula: see text] variations are strongly dependent on the spanwise location of the measurement.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
