Turbomeca

Geoffroy Louis-Henri Marie Billotey

Pierre Biscay

Jean-Philippe Ousty

Beatrice Marie Renard

Gilles Cazenave-Larroche

An attachment arrangement at a middle of a cover having an elastically deformable portion. The cover includes a concave shell including an inner surface spaced apart from the compressor including an impeller including blades by an attachment. The attachment includes one connection end at the middle of the shell, another end attached to a casing of the turbine engine, and an axisymmetric diaphragm having a generally frusto-conical configuration having an arm profile coupled to the end for attachment to the casing by a double-elbow joint having right and obtuse angles when in a rest position. The distance between the inner surface of the shell and upper edges of the blades can be held constant during operation with minimum clearance adjustment. The cover can be moved such that clearance between the cover and blades of the compressor impeller remains substantially constant and as low as possible.

Method for attaching the cover of a centrifugal compressor of a turbine engine, compressor cover implementing same and compressor assembly provided with such a cover

A compressor impeller including at least one blade connected to an impeller hub via a junction of curved shape, the blade extending along a defined chord between a leading edge and a trailing edge of the blade. The junction presents the shape of an ellipse that varies along the chord.

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Voiron, France

Geoffroy Louis-Henri Marie Billotey