TURBOMACHINERY ROTOR BLADE

A turbomachinery rotor blade is provided having an aerofoil body, and a hole penetrating the aerofoil body from a suction surface to a pressure surface thereof. The hole is suitable to receive a lacing wire. The blade further has a protrusion from the suction or pressure surface. The protrusion extends in a downstream direction from a downstream side of the hole and/or extends in an upstream direction from an upstream side of the hole, thereby disturbing the suction or pressure surface to locally thicken the aerofoil body adjacent the hole. The maximum radial extent of the protrusion in the radially outward direction of the blade is radially coterminous with the outboard side of the hole, and the maximum radial extent of the protrusion in the radially inward direction of the blade is radially coterminous with the inboard side of the hole. 提供种涡轮机械的转子叶片，该转子叶片具有翼型体和从翼型体的吸力面穿透到翼型体的压力面的孔。该孔适于容纳系索。该叶片还具有来自吸力面或压力面的突起。该突起从孔的下游侧沿下游方向延伸和/或从孔的上游侧沿上游方向延伸，因此打断吸力面或压力面使邻近该孔的翼型体局部地增厚。该突起在叶片的径向向外方向上的最大的径向延伸与孔的外侧径向接合，并且该突起在叶片的