Blade with 3d platform comprising an inter-blade bulb

Details Blade with 3d platform comprising an inter-blade bulb Blade with 3d platform comprising an inter-blade bulb

F - Mech Eng,Light,Heat,Weapons

01

D

F01D 5/14 (2006.01)

Patent

CA 2716244

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.

Aube pour roue à aubes de turbomachine, comportant un profilé aérodynamique, et une plateforme s'étendant à l'une des extrémités du profilé dans une direction globalement perpendiculaire à une direction longitudinale du profilé, l'aube étant apte avec d'autres aubes identiques à former une couronne autour d'un axe de couronne, les plateformes d'aubes adjacentes se rejoignant deux à deux de manière à former une surface inter-profilés reliant l'intrados (56') d'un profilé aérodynamique à l'extrados (58) du profilé voisin (50). Dans cette aube, la surface inter-profilés comporte, dans une moitié amont du profilé, une bosse (32) située plus près de l'intrados (56') que de l'extrados (58), et un passage en creux (34) situé entre celle-ci et l'intrados.

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