Method of forming a wind turbine blade

A method of forming a wind turbine blade, the wind turbine blade comprising:

• a main blade module defining a main body of the blade and including a first mating feature;
• and,
• a separate edge module defining at least part of a trailing edge of the blade and including a second mating feature,
• the method comprising:
• applying an adhesive to at least one of the first mating feature and the second mating feature;
• arranging the separate edge module relative to the main blade module such that the first and second mating features are mutually adjacent;
• and,
• applying a pressure force to squeeze the adhesive to bond the first and second mating features together,
• wherein the pressure force is caused by removing air from, or injecting air into, an air sealed region;
• and,
• wherein the air sealed region encapsulates at least the first and second mating features, the method comprising forming the air sealed region after the separate edge module has been arranged relative to the main body module, and the method comprising removing air from the sealed region to create a vacuum and cause the pressure force to be applied.

A method of forming a wind turbine blade, the wind turbine blade comprising:

• a main blade module defining a main body of the blade and including a first mating feature;
• and,
• a separate edge module defining at least part of a trailing edge of the blade and including a second mating feature,
• the method comprising:
• applying an adhesive to at least one of the first mating feature and the second mating feature;
• arranging the separate edge module relative to the main blade module such that the first and second mating features are mutually adjacent;
• and,
• applying a pressure force to squeeze the adhesive to bond the first and second mating features together,
• wherein the pressure force is caused by removing air from, or injecting air into, an air sealed region;
• and,
• wherein the air sealed region is defined by one or more inflatable airbags, and the method comprises injecting air into the one or more inflatable airbags to cause the force to be applied by the inflatable airbags applying pressure to an outer surface of the blade in the vicinity of the first and second mating features.