The turbine blades in tidal turbines at the Oosterscheldekering have been running successfully for years now. They provide about one thousand Zeeland households with clean electricity every day of the year.
At fierst glance it may look simple: beautiful white shaped parts that seem to be molded. However, the composite turbine blades are a technical masterpiece. The turbine blades must be maintenance-free for a long time (they are placed under water and therefore difficult to access) and the maximum forces on the turbine blades were immense. So these blades really have to be very strong.
Let’s clarify the term ‘very strong’ a bit more: a set of turbine blades (two blades) provides as much force as a sea tug boat under maximum load / at full power.
Holland Composites produced these composite tidal turbine blades after having developed them together with engineering firm Solico. These turbine blades have to meet particularly high requirements in terms of both strength and durability, resulting in a particularly thick-walled composite structure.