| 主权项 |
1. A blade comprising:
a blade shank, an aerodynamic portion, having a part, named the base, extending into the blade shank, an assembly, named the blade shank assembly, of the aerodynamic portion to the blade shank, said blade shank assembly retaining the aerodynamic portion in a direction, named the radial direction, corresponding to a centrifugal direction when the blade is driven in rotation with the blade shank anchored to a rotating hub,wherein:
the blade shank is able to have a mounting opening having a dimension, named the opening width, in any tangential direction orthogonal to the radial direction, which is greater than an overall dimension of the base, so that the base can be mounted in the blade shank by being passed in the radial direction through the mounting opening, the blade shank comprises at least one passage restriction forming a restriction of the opening width in at least one direction, named the retention direction, orthogonal to the radial direction, said at least one passage restriction having, in said retention direction, a dimension, named the restricted width, allowing a section of the aerodynamic portion to be housed therein, the base of the aerodynamic portion extends radially on the inside relative to said at least one passage restriction and has an overall dimension in said retention direction which is strictly greater than said restricted width,so that, in the event of rupture of the blade shank assembly, the base is able to come into abutment in said radial direction against said at least one passage restriction so as to retain the aerodynamic portion in the blade shank at least in said radial direction. |
