The Joint Blade Rotor system is a patented blade design for wind turbines. This system utilizes the power of wind at a much higher efficiency than traditional blades. The blade is designed as a twin-blade with higher stability, lighter construction, and as a result, offers aerodynamic benefits.
This new and revolutionary blade design is the outcome of research within Aalborg University, Denmark.
Each blade consists of a set of two smaller blades. The theory behind this concept is that the two smaller blades running parallel will utilize the power in the wind better.
At the same time, the joint is placed two-thirds of the way out from the root of the blade making it more stable, and at a larger scale, the weight can be reduced.
The blade can be designed to stall just like pitch-regulated turbines. The first full-size rotor set is produced for a pitch-regulated turbine and is produced at a length of 8 meters which fits a 60KW turbine.
The blade is produced in standard glass fiber, and as the sketch shows, a root connector attaches the ends of the two blades to a standard root mounting. This way the blade can be mounted on any pitch-regulated turbine and is not dependent upon a specific root connection.