Snecma

Snecma Moteurs

Erick Jacques Boston

Pierre Debeneix

Jacques Audet

Alain Marc Lucien Bromann

Yvon Cloarec

Daniel Bernard Dao

Frederic Paul Eichstadt

Francis Soniak

Marie-France Bourgeois

Gérard Miraucourt

Stephan Yves Aubin

Didier Escure

Arnaud Langlois

Alain Leman

Vincent Garnier

Francis Gilles Soniak

Gerard Gabriel Miraucourt

Didier Rene Escure

Jacques Robert Audet

A device for axial retention of mobile vanes mounted on a rotor disc includes two open rings, superimposed. At least one of the rings includes a rotating stop mechanism configured to cooperate with at least one hook of the disc. The two open rings are mounted in a discontinuous groove formed in the hooks, at the end of teeth situated on the periphery of the rotor disc, such that the rotating stop mechanism of the first ring is placed in the opening of the second ring. The significance of contact surfaces between the two rings allows a damping of vibrations during operation.

Device for axial retention of mobile vanes mounted on a rotor disc

A device for rotationally blocking a retaining ring () on a rotor disk () includes successive first () and second () blocking hooks of the disk (), at least one cleat () of the retaining ring () arranged close to a split () in the ring (). The position of the at least one cleat () on the retaining ring () is such that, when the retaining ring () is in place in a groove () situated in the rotor disk (), the at least one cleat () is in abutment against the first blocking hook (), and the split () is covered by the second blocking hook ().

Device for blocking a ring for axially retaining a blade, associated rotor disk and retaining ring, and rotor and aircraft engine comprising them

A first rotor piece includes a first ring provided with a succession of holes and notches. An assembly is formed by a second rotor piece fixed to a third rotor piece. The second piece ends downstream in a second ring including holes. The third piece ends upstream in a third ring including holes. The second and third rings are arranged against each other with their holes in alignment, and are fixed together by first fasteners. The first ring is arranged upstream of and against the assembly so that the notches fit around the first fasteners so that some of the holes of the first ring are aligned with holes of the assembly, with second fasteners fixing the first ring to the assembly.

Connection between bladed discs on the rotor line of a compressor

A device for guiding pivoting of variable-pitch vanes in a turbomachine, each vane having a pivot formed by a cylindrical axial shank which is guided in a cylindrical chimney of the casing and in a cylindrical orifice of a stationary element which surrounds the outside of the casing and which is centered and fixed relative thereto. The invention improves pivotal guidance of variable-pitch vanes.

Device for pivotally guiding variable-pitch vanes in a turbomachine

Growing community of inventors

Cesson, France

Erick Jacques Boston