Blade with non-axisymmetric platform

Details Blade with non-axisymmetric platform Blade with non-axisymmetric platform

F - Mech Eng,Light,Heat,Weapons

01

D

F01D 5/14 (2006.01)

Patent

CA 2716248

Blade (10) for the bladed disc of a turbomachine comprising an aerofoil, and at least one platform at one end of the aerofoil, the blade (10) being able to be positioned, together with a plurality of substantially identical blades, in such a way as to form a ring, the platform surface exhibiting an extrados profile (80) and an intrados profile (85) along the extrados and the intrados respectively. In the blade, the intrados profile (85) has a recessed intrados part (I) situated axially in the downstream half of the aerofoil. This configuration improves the efficiency of the blade.

Aube (10) pour roue à aubes de turbomachine comportant un profilé aérodynamique, et au moins une plateforme à une extrémité du profilé, l'aube (10) étant apte à être disposée avec une pluralité d'aubes sensiblement identiques pour former une couronne, la surface de plateforme présentant un profil d'extrados (80) et un profil d'intrados (85) respectivement le long de l'extrados et de l'intrados. Dans l'aube, le profil d'intrados (85) présente une partie en creux (I) d'intrados située axialement en moitié aval du profilé. Grâce à cette conformation, le rendement de l'aube est amélioré.

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