Snecma Moteurs

Safran Aircraft Engines

Gérard Miraucourt

Francis Soniak

Marie-France Bourgeois

Jean-Pierre Ferte

Erick Jacques Boston

Daniel Bernard Dao

Didier Escure

Jacques Audet

Danielle Adde

Patrick Lestoille

Patrick Didier Michel Lestoille

Francis Gilles Basile Soniak

Jean Pierre Ferte

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 monobloc bladed disc and a process for manufacturing or repairing a monobloc bladed disc, where the process includes forming, on a protruding projection belonging to a disc and extending from an upstream end to a downstream end along a protruding projection chord, a welded joint surface intended to allow a subsequent stage of fitting a blade by linear friction welding onto the protruding projection of the disc. The forming the welded joint surface is carried out in such a way that it includes at least two butt-jointed plane portions arranged in sequence along the protruding projection chord.

Process for manufacturing or repairing a monobloc bladed disc

Growing community of inventors

Brie Comte Robert, France

Gérard Miraucourt