Snecma

Bertrand Jean Joseph Marie Heurtel

Guy Vieillefond

Sebastien Alain Imbourg

Florence Irène Noëlle Leutard

Christophe Yvon Gabriel Tourne

Florence Irene Noelle Leutard

Andre Castel

Sébastien Alain Imbourg

André Camille Louis Castel

External shroud for a turbomachine turbine wheel, this shroud being formed of ring sectors () positioned circumferentially end to end, and each comprising a circumferentially directed plate () bearing a block () of abradable material, the plate and the block of each ring sector being offset one with respect to the other in the circumferential direction so that a circumferential end part of the plate of each ring sector overlaps a corresponding end part of the block of an adjacent ring sector.

Airtight external shroud for a turbomachine turbine wheel

This present invention concerns an axial gas turbine engine compressor which includes a casing and a distributor wheel composed of a multiplicity of sectors in arcs of circles, with radial stator blades fixed to an external platform, characterized by the fact that the said platform is retained in the casing by two joints of the tongue and groove type, one upstream and the other downstream of the stator blades, the said downstream joint being formed between a transverse flange provided on the external platform and a flange provided on the casing, with a securing resource to create a tight joint between the two flanges. It is preferable that the securing resource should be a bolt. The invention provides for effective retention of the sector so as to prevent wear in the surfaces in contact. The solution is easy to implement.

Fitting of distributor sectors in an axial compressor

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Vert St Denis, France

Bertrand Jean Joseph Marie Heurtel