BLADE WITH 3D PLATFORM COMPRISING AN INTER-BLADE BULB

摘要

Blade for the bladed disc of a turbomachine, comprising an aerofoil and a platform extending at one of the ends of the aerofoil in a direction on the whole perpendicular to a longitudinal direction of the aerofoil, the blade being able, together with other identical blades, to form a ring around a ring axis, the platforms of adjacent blades each meeting the next in such a way as to form an inter-aerofoil surface connecting the intrados (56') of one aerofoil to the extrados (58) of the next aerofoil (50). In this blade, the inter-aerofoil surface comprises, in an upstream half of the aerofoil, a boss (32) situated closer to the intrados (56') than to the extrados (58), and a recessed passage (34) situated between this boss and the intrados.