Abstract: Additional lightning protection system for intermediate wind turbine blade joints comprises a metal fairing that covers the blade connector elements while shielding and protecting the internal connector elements from getting hit by lightning.

Abstract: Blade insert connected in the lamination of a blade determining a double shear joint between insert and lamination. The insert is made up of two defined parts, head (2), designed to screw the insert to another structure (2?), and the body (3) that determines a cylindrical or conical shape with an internal conical cavity. In an embodiment, the insert is designed to be joined to the lamination (1) of the blade with adhesive means (4). In another embodiment, the insert is embedded in the blade lamination with an inner part (5) stuck to the body (3) of the insert.

Abstract: Blade insert arranged inside the blade walls so that the joint between the insert and composite (1) is a double shear joint. The insert is made up of two defined parts, the head (3, 3?) and the body, which are joined together by joint elements (5) that define a double wall body (6, 6?). The joint between the insert and pultruded material (2) is made with an adhesive chemical joint (9). After making the joint, the assembly made up by the inserts and pultrusion profiles (2) is fitted into the blade walls during its manufacturing process and material curing.

Abstract: Wind turbine blade subdivided transversely into two or more sections made up of a number of sensors, preferably load cells and ultrasound sensors, assembled into the mechanical joining elements between blade sections and characterised in that their measurements allow the loads to be reduced and the forces to be controlled during the entire life of the blade. They also allow damages to be detected (stopping the machine if necessary) and an optimised design for real loads.

Abstract: A wind turbine blade (1, 3, 5) comprising at least one central spar longitudinal section (7, 7?, 7?) composed of two cap prefabricated panels (15, 17) and two web prefabricated panels (19, 21) placed side by side in a box shape and at least two shell longitudinal sections (5, 5?, 5?, 5??, 5??; 9, 9?, 9?, 9??) forming, respectively, the leading edge and the trailing edge of the corresponding blade section that are placed adjacently to a central spar section (7, 7?, 7?) and are composed of a single prefabricated panel (31, 33) or of two prefabricated panels (11, 23; 13, 25), the aerodynamic profile of the blade being defined by said cap panels (15, 17) and said single shell panels (31; 33) or said two shell panels (11, 23; 13, 25).