Snecma

Societe Nationale D'etude Et De Construction De Moteurs D'aviation

Frederic Paul Eichstadt

Bruno Albert Beutin

Gerard E Jourdain

Alain Marc Lucien Bromann

Alexandre Alfred Gaston Vuillemin

Pierre Debeneix

Jacky Raphael Michel Derenes

Erick Jacques Boston

Eric Conete

In a bypass turbomachine, at least one air takeoff orifice is provided in the primary channel, said orifice leading to an air takeoff pipe housed inside an air inlet sleeve of the nacelle. The air takeoff pipe opens out in the vicinity of the pylon into two air diffusion pipes each secured to a respective maintenance cover, each air diffusion pipe opening out into an air injection pipe secured to a thrust reverser cover and itself opening out to the outside of the nacelle via the trailing edge thereof, each air injection pipe being suitable for uncoupling from the corresponding air diffusion pipe when the corresponding thrust reverser cover slides downstream.

Bypass turbomachine with reduction of jet noise

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 control device for the pivot of a variably settable movable vane mounted so that the pivot is integrated in an air manifold comprises a rotatable mounting for pivotally mounting the pivot in a bore in a platform fixed to the manifold by upstream and downstream flanges, a link for rotating the pivot to vary the setting of the vane, and a ring mounted outside the manifold and connected to the link for controlling the setting of the vane. The rotatable mounting for pivotally mounting the pivot in the bore comprises an end piece which is fitted on the pivot and which itself fits within a hollow friction bush fixed in the bore. The bush is provided with a slit extending partly around its circumference, and the upstream end of the link projects through the slit via apertures in the manifold and the platform to engage with an eye provided on the pivot end piece which receives a correspondingly shaped intermediate portion of the end piece. The pivot is hollow to allow hot de-icing air from the manifold into the interior of the vane.

Control device for a pivot integrated in a manifold

A variable geometry flame trap device for use in an after-burner device of a gas turbine, which is not exposed to deformation forces during its use in the after-burner mode. This is achieved with a plurality of flame trap plate pairs (21), positioned downstream of the turbine at the outlet of a primary air flow duct (9) and mounted so as to pivot on a plurality of diffuser arms (19) located at the outlet of a secondary air flow duct (7), characterized in that the plates (21) of each pair are made from a composite material and in that they have a cam projecting from their facing faces (42), said two cams (43) bearing on one another.

Growing community of inventors

Livry/Seine, France

Frederic Paul Eichstadt