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Published: 01 September 2021 01 September 2021

The Front Cover

Lightning damage stubbornly remains a major O&M expense for owner-operators in cost and frequency. Damage such as blade skin punctures, shell delamination, split trailing edges, and (less frequently) catastrophic damage to wind turbine blades is costly to repair and causes undesirable downtime. Arctura has developed a wind turbine blade coating that reduces lightning damage to turbine blades by encouraging surface flashovers (see page 7). (cover image: courtesy NTS Lightning Technologies).

Publisher's Note

HUSUM Wind 2021: first European on-site trade fair since the pandemic began

Features

Lightning Protection for Wind Turbines
By Neal E. Fine, John A. Cooney and Christopher S. Szlatenyi, Arctura, Inc., USA
 

Wind Turbines and Computational Fluid Dynamics
By Jacob Krispin and Joel Balbien, Vorcat, USA

Future Super Large Rotor Blades
By Frank Seewald, Torsten Sadowski, Roland Stoer, WINDnovation Engineering Solutions, Germany

Moving Rotor Hubs
By Sabrina Deininger

Windtech Future

Are We Going in the Right Direction?
By Ahmad Hemami, McGill University, Montreal, Canada

View from Inside

Together We Must Act Faster!
By Stefan Gsänger, Secretary General, World Wind Energy Association

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