Snecma

Emmanuel Houradou

Dominique Raulin

Sebastien Juste

Regis Eugene Henri Servant

Antoine Robert Alain Brunet

Julien Sedlak

Claude Chomel

Frederic Renault

Herve Hulin

Antoine Robert Brunet

Sébastien Juste

Hervé Hulin

A nose dome for a turbomachine blower that has a conical exterior surface and a base, which dome includes: a plurality of removal mechanism, a plurality of fasteners created by machining the exterior surface, the fasteners including a first, blind borehole that is capable of forming a bearing surface; an orifice that passes through the bearing surface and is capable of accommodating threaded fasteners. The removal mechanisms are created by machining the boreholes in the fasteners in a direction designed to enable removal in an axial direction of the dome with the aid of a tool that cooperates with the machined arrangements.

Nose dome for a turbomachine blower

A system for securing first and second tubular coaxial components carrying a roller bearing is provided. The system includes a forcing nut mounted inside the coaxial components and axially abutting against the first component after screwing-in of the second component; and a locking pin for preventing unscrewing of the nut and being arranged between the nut and the first component. The system also includes a cylindrical sleeve being arranged between the pin and the first component, being secured axially relative to the first component, and including an axial stop against which the pin is applied; and first and second devices for linking the pin and the first component in rotation, respectively, with the sleeve.

System for securing two tubular components one in the other, carrying a roller bearing

The invention relates to a turbomachine module comprising a device to improve radial clearances, comprising an outer casing (), an inner casing () and at least one shock absorbing ring () connecting the casings, the module also comprising an annular cavity () on the downstream side of the ring (), with a passage () formed in it through which an airflow () is drawn off from the primary flow (Fp). According to the invention, the device to improve radial clearances comprises a thermal inertia control device for the shock absorbing ring mounted on the shock absorbing ring (), downstream from it, this device comprising at least one coat of thermal insulation (), and at least partly delimiting the annular cavity () on the downstream side of it ().

Turbomachine module provided with a device to improve radial clearances

A bearing for a turbomachine variable pitch stator vane pivot mounted in a bore of the turbomachine casing is disclosed. The bearing includes an inner bushing secured to the pivot and an outer bushing secured to the bore. An elastomeric material is inserted between the inner bushing and the outer bushing to allow the vane to pivot about its axis and absorb at least some of the flexing of the pivot at right angles to the axis. The design makes it possible to reduce bearing bushing wear.

Bearing for variable pitch stator vane

Growing community of inventors

Paris, France

Emmanuel Houradou