Blade grid for use as e.g. mobile wheel of compressor of aeronautical turbomachine, has rings with discharge guides placed circumferentially between blades, where rings are extended along directions parallel to skeleton lines of blades

摘要

The grid (10) has an internal ring (12) and an external ring (14) placed coaxially with respect to each other around a longitudinal axis (16) of a turbomachine. A set of blades (20) are extended radially between the rings. Each blade includes an aerodynamic extrados surface that is circumferentially opposite to an aerodynamic intrados surface (22). The rings include discharge guides e.g. male grooves (30), placed circumferentially between the blades, and are respectively and axially extended along directions parallel to skeleton lines of the blades.