Abstract
Span wise variation of the induced twist due to bend-twist elastic coupling in the structure of a wind turbine adaptive blade, affects its aerodynam performance significantly. Effect of various laminate configurations and shell thickness on the span-wise variation with induced twist is investigated. Linear shell thickness variations with constant laminate layup, linear ply angle variation with constant thickness and unbalanced mirror layup combined with balanced layup configurations with constant shell thickness are considered for study. Results reveal that that normalised induced twist is independent of the magnitube of the shell thickness. The total normalised elastic twist depends on the magnitude of the ply angle. This dependency decrease as the share of the elastic twist due to pitching moment reduces.
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