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US 2011/0085896 A1Published application
Casing for a moving-blade wheel of turbomachine
AssigneeSnecma
InventorsAntoine Robert Alain Brunet, Olivier Stephane Domercq, Laurent Jablonski, Vincent Paul Gabriel Perrot
Life of this patent
Estimating the term…
Abstract
A casing for a turbomachine rotor wheel includes a plurality of circumferential grooves, each of substantially constant section, with the section areas of the circumferential grooves decreasing from upstream to downstream on going from the first groove to the last groove. By treating the casing in this way, the efficiency of the rotor wheel is optimized and its surge margin is improved.
Claims17
1-10. (canceled)
A casing for a rotor wheel of a turbomachine, the casing comprising:
- an inside wall that is substantially cylindrical about an axis of the casing, the cylindrical wall presenting a plurality of circumferential grooves each of section that is substantially constant in an axial section plane,
- wherein the section areas of the circumferential grooves decreases from upstream to downstream going from a first of the grooves to a last of the grooves.
Dependencies are inferred from the claim text.