AUBES FOR WHEEL WITH TURBOMACHINE AUBES WITH GROOVE FOR COOLING.

摘要

A blade (10) for a turbomachine impeller (100), comprising an aerodynamic profile (12) and a platform (60) with at least one air injection passage (16), the platform (60) of which has a groove (40,140,240) along the intrados (56) in the vicinity of at least a downstream portion (57) thereof, at least one air injection passage being arranged in this groove. Thanks to the presence of this groove, the air flow injected by the (s) passage (s) of air injection is confined to the vicinity of the intrados, and thus ensures effective cooling of the downstream portion thereof.