FIELD: machine engineering.
SUBSTANCE: invention relates to a cover (10) for blisks (20) of a turbomachine (1) comprising an inner coating (11) made of abradable material and a plurality of peripheral slots (12) arranged in said coating (11) of abradable material wherein the cover further comprises a peripheral cavity (13) formed in coating (11) of the abradable material, a cavity into which slots (12) lead, wherein slots (12) lead into a cavity (13) and extend between a cavity (13) and an inner surface (15) of cover (10). The invention also relates to a turbomachine comprising such cover and a blisk.
EFFECT: improved aerodynamic and acoustic level by reducing the turbulent air flow intensity near the inner cover surface.
10 cl, 2 dwg
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