The swept-shape 75-metre-long model, currently turning on prototype machines at SSE’s Hunterston, Scotland site and at Denmark’s national testing centre in Østerild, is aerolastically-tailored for “tremendous strength at a low weight” to resists deflections or structural deformation from turbulent wind loads.

Being able to couple the wind’s bending and twisting forces to soak up structural loads, the flyweight 25-tonne B75s can absorb shocks that would otherwise travel from blades to transmission system and down the turbine tower, shortening the working life of a turbine.

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