| 摘要 |
<p>The present invention is concerned with a turbine blade system, in particular a wind turbine blade system comprising a main blade having a root and a tip, and at least one secondary blade secured to or formed integrally with the main blade about the tip, the at least one secondary blade being shaped and dimensioned to form, when the main blade is rotated, a shroud circumscribing a swept area of the main blade in order to improve the airflow past the main blade during operation of the wind turbine.</p> |
