Turbocompressor disk provided with an asymmetrical circular groove

摘要

A turbocompressor disk having on its periphery a circular groove able to receive blade roots having a substantially hammer shape, said circular groove comprising an upstream lip and a downstream lip against which bear the blade roots. The upstream lip has a curvature of gradient inclined by an angle alpha with respect to the plane perpendicular to the rotation axis and the downstream lip has a curvature of gradient inclined by an angle beta with respect to the plane perpendicular to the rotation axis, alpha being strictly different from beta .