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

Societe Europeenne De Propulsion

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

Societe Europeene De Propulsion

Guy Martin

Jean-Pierre Maumus

Jean-Roch Vivier

The loader device is made of a thermostructural composite material and comprises a base (,), a loading pole (,) secured to the base and extending at least over the full height of the loader device, and a plurality of loading trays (,) each provided with a central passage through which the loading pole can pass. Each loading tray carries a plurality of spacers (,) enabling the trays to be mounted in succession at predetermined intervals, each tray carrying the same number of spacers which are in alignment so that after the trays have been assembled the spacers make up load-carrying columns extending over the height of the loader device, and at least one of the spacers carried by each tray has a disposition and/or a size that differs from the other spacers carried by the same tray so as to enable the trays to be indexed during assembly. Each tray (,) has means (,) for positioning parts at predetermined locations.

Loader device for supporting parts for heat treatment in a furnace

A method of manufacturing a turbine comprising a plurality of blades disposed between two end plates and defining flow passages between an inner ring and an outer ring. The turbine is formed by first and second parts, each part made as a single one-piece part out of thermostructural composite material. The first part forms both a first end plate and the blades, and the second part forms the second end plate that is applied against the blades of the first part. The first part and the second part are preferably assembled to each other solely by being clamped together via their central portions.

Method of manufacturing a turbine of thermostructural composite

Method of manufacturing complex one-piece structural parts of composite

The turbine comprises a plurality of blades disposed around a hub between two end plates, with the blades, the hub, and the end plates being made of thermostructural composite material. The hub is made by stacking plane annular plates of thermostructural composite material along a common axis. Each blade is made individually by shaping a two-dimensional fiber fabric in plate or sheet form to obtain a blade preform, by densifying the preform with a matrix to obtain a blade blank made of thermostructural composite material, and by machining an outline for the densified preform. Each end plate is obtained by making an annular preform by means of a two-dimensional fiber fabric in plate or sheet form, and by densifying the preform with a matrix to obtain a part made of thermostructural composite material. The blades are assembled to the hub between the end plates, with each blade being connected to the hub by a portion forming a blade root.

Turbine of thermostructural composite material, in particular a turbine

The turbine comprises a plurality of blades disposed between two end plates and defining flow passages between an inner ring and an outer ring. The turbine is formed by first and second parts, each part made as a single one-piece part out of thermostructural composite material, the first part forming both a first end plate and the blades, while the second part forms the second end plate which is applied against the blades of the first part. The first part and the second part are preferably assembled to each other solely by being clamped together via their central portions.

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St. Aubin Du Medoc, France

Guy Martin