F - Mech Eng,Light,Heat,Weapons – 01 – D
Patent
F - Mech Eng,Light,Heat,Weapons
01
D
F01D 9/00 (2006.01) F01D 5/14 (2006.01) F01D 11/12 (2006.01) F01D 25/24 (2006.01) F02C 7/00 (2006.01) F04D 27/02 (2006.01) F04D 29/16 (2006.01) F04D 29/68 (2006.01)
Patent
CA 2444982
The casing (28) of the invention is of the type supporting series of stationary blades having disposed between them series of blades that are movable (22) in rotation about a longitudinal axis. In characteristic manner, said casing (28) comprises a main element and, at least facing one of the series of moving blades (22), an assembly comprising a plate made of a honeycomb material and a covering disposed on the face of the plate facing away from the blades so that said cells are open towards the blades, said covering being provided with holes that open out into cells of the plate, thereby forming open cells, said covering closing other cells of the plate, thereby forming closed cells, a cavity being formed between said plate and the inside face of said main element. Preferably, the casing (28) forms the casing (28) of an axial compressor operating at low pressure in a turbojet engine.
Le carter (28) selon l'invention est du type supportant des séries aubes fixes entre lesquelles sont disposées des séries d'aubes mobiles (22) en rotation autour d'un axe longitudinal. De façon caractéristique, ledit carter (28) comporte un élément principal et, au moins en regard de l'une des séries d'aubes mobiles (22), un ensemble compostant une plaque réalisée en matériau nids d'abeilles et un revêtement disposé sur la face de la plaque tournée en direction opposée aux aubes, de sorte que lesdites cellules sont ouvertes en direction des aubes, ledit revêtement étant muni de trous débouchant dans des cellules de la plaque formant des cellules ouvertes, ledit revêtement refermant les autres cellules de la plaque formant des cellules fermées, une cavité étant formée entre ladite plaque et la face interne dudit élément principal. De préférence, ce carter (28) est destiné à former le carter (28) d'un compresseur axial fonctionnant à basse pression dans un turboréacteur.
Le Biez Philippe
Lebret Yann
Mons Claude
Goudreau Gage Dubuc
Snecma
Snecma Moteurs
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