Wind turbine blade with a fairing

A kit of parts for assembly into a wind turbine blade extending along a longitudinal axis from a root to a tip, the wind turbine blade comprising a root region and an airfoil region with the tip, the wind turbine blade comprising a chord line extending between a leading edge and a trailing edge, the wind turbine blade comprising an aerodynamic exterior blade surface including a pressure side and a suction side, the kit of parts comprising:

• a prefabricated structural blade body-comprising:
• a first exterior body surface defining part of the pressure side,
• a second exterior body surface defining part of the suction side,
• a first attachment surface located adjacent to the first exterior body surface, and
• a second attachment surface located adjacent to the second exterior body surface;
• a prefabricated fairing extending along the longitudinal axis and along a fairing profile terminating at a first fairing lip of the fairing and at a second fairing lip of the prefabricated fairing, the fairing comprising:
• an exterior fairing surface positioned exteriorly relative to the fairing profile;
• an interior fairing surface positioned interiorly relative to the fairing profile;
• and
• one or more fibre-reinforced layers extending from the first fairing lip to the second fairing lip and along the longitudinal axis;
• wherein the prefabricated fairing is configured for being fixed to the blade body so that the exterior fairing surface defines a part of the exterior blade surface connecting the first exterior body surface and the second exterior body surface, and so that the exterior fairing surface defines either the leading edge of the wind turbine blade or the trailing edge of the wind turbine blade;
• wherein the fairing has a first fairing state in which the fairing is adapted to be mounted to a blade body prior to being fixed and has a second fairing state in which the fairing is adapted to be fixed to the blade body, the fairing lips of the fairing being compressed towards each other in the second fairing state relative to the first fairing state,
• wherein the one or more fibre-reinforced layers of the fairing are configured for being deformed so that, upon application of a compression force onto the exterior fairing surface at fairing lips, the fairing is brought from the first fairing state to the second fairing state;
• and
• a jig extending along the longitudinal axis and along a jig profile terminating at a first jig lip of the jig and at a second jig lip of the jig, the jig comprising:
• an interior jig surface positioned interiorly relative to the jig profile and configured to match and receive the exterior fairing surface of the fairing,
• wherein the jig has a first jig state and a second jig state, wherein the jig profile in the first jig state matches the fairing profile in the first fairing state and the jig profile in the second jig state matches the fairing profile in the second fairing state
• wherein the kit of parts further comprising one or more alignment tool sets each including:
• a first tool pair including a first jig tool part and a first blade tool part secured to one of the fairing lips and to the blade body adjacent to the corresponding attachment surface, respectively;
• and
• a second tool pair including a second jig tool part and a second blade tool part secured to the other fairing lip and to the blade body adjacent to the corresponding other attachment surface, respectively;
• wherein one of the tool parts of each tool pair comprises a pin and the other one of the tool parts of each tool pair comprises a guide configured for retaining the respective pin while allowing the pin to move along a predefined guide course from a pin entry position to a pin terminal position;
• wherein each tool pair is configured so that, when the pin is positioned in the pin entry position in the respective guide, the fairing is in the first fairing state, and so that, when the pin has been moved from the pin entry position to the pin terminal position along the predefined guide course, the fairing is in the second fairing state.

A wind turbine blade extending along a longitudinal axis from a root to a tip, the wind turbine blade comprising a root region and an airfoil region with the tip, the wind turbine blade comprising a chord line extending between a leading edge and a trailing edge thereof, the wind turbine blade comprising an aerodynamic exterior blade surface including a pressure side and a suction side, the wind turbine blade comprising:

• a structural blade body;
• and
• a prefabricated fairing extending along the longitudinal axis and along a fairing profile terminating at a first fairing lip of the fairing and at a second fairing lip of the fairing, the fairing comprising:
• an exterior fairing surface positioned exteriorly relative to the fairing profile;
• an interior fairing surface positioned interiorly relative to the fairing profile;
• and
• one or more fibre-reinforced layers extending from the first fairing lip to the second fairing lip and along the longitudinal axis;
• wherein the fairing has a relaxed fairing state in which the fairing profile assumes an unloaded shape, a first fairing state, has a second fairing state,
• wherein the fairing is mounted to the structural blade body in the first fairing state
• wherein the fairing is attached to the structural blade body in the second fairing state;
• and
• wherein the fairing lips of the fairing are expanded away from each other in the first and second fairing states relative to the relaxed fairing state.