Safran

Snecma

Safran Aircraft Engines

Olivier Foussard

Adrien Touze

Didier Payen

Dominique Marie Christian Coupe

Richard Mathon

Yann Marchal

Nicolas Pierre Lanfant

Raoul Jaussaud

Thierry Patrick Chauvin

Nicolas Cambyse Ashtari

Franck Bernard Leon Varin

Marc-Emmanuel Jean François Techer

Florian Tellier

Franck Bernard Léon Varin

Romain Venat

Christophe Ravey

Sébastien Dunaud

Benoit Bazin

Nate Gravelle

Franck Bernard Varin

A process for shaping, by compaction, a fibrous structure obtained by three-dimensional or multilayer weaving between a plurality of layers of warp yarns and a plurality of layers of weft yarns. The yarns of each plurality of layers of warp yarns and layers of weft yarns are coated with a sizing composition. The shaping includes a pre-compaction stage followed by a stage of final compaction of the fibrous structure. During pre-compaction and final compaction, the fibrous structure is at a temperature greater than or equal to the softening temperature of the sizing composition. The process further includes the cooling of the fibrous preform obtained after final compaction of the fibrous structure.

Method for shaping a fibrous preform by compacting in order to produce a composite material part

The invention relates to a resin injection regulator for a resin injection circuit in a mould for producing a composite part, in particular a turbine engine composite part, characterised in that it comprises at least one vessel which is connected to said circuit and inside of which a movable wall means can be moved in a sealed manner, said movable wall means defining in said vessel a first cavity which forms a container for accumulation of resin and is designed to be connected to at least one part of said circuit, and a second cavity which is designed to be connected to a source of pressurised fluid, said movable wall means being designed to be urged by the pressurised fluid with which the second cavity is supplied in order to exert a pressure on the resin contained in the first cavity by isolating said resin from said fluid.

Resin injection regulator, resin injection circuit and associated methods

Methods for manufacturing a turbomachine composite part, such as a fan blade, are provided. The composite part has a fibrous structure with a three-dimensional fibrous preform coated with a surface fibrous web, and which is embedded in a polymer matrix The methods include: forming the surface web in a cavity of a mold in order to shape it, wetting and forming the preform on the surface web in order to shape it, and closing the mold, drying the fibrous structure, and injecting thermosetting resin into the mold in order to form said polymer matrix. The surface web is wetted before and/or during the forming thereof.

Method for manufacturing a turbomachine composite part

The invention relates to equipment () for manufacturing a part () by injection moulding, including: a first cavity (), a second cavity (), and a supporting element (), shaped such as to hold the part () in position in the equipment, and defining, together with the cavities (), an inner space of the equipment, the holding element () as well as the first cavity () and/or the second cavity () being movable relative to one another.

Coating of a turbine engine part by overinjection

A propeller blade, which can belong to a fan without covering by an external casing, includes two portions fitted into one another and of different materials, generally composite, to resist various stresses, heating coming from a rotor or impacts of solid bodies. An internal portion includes a blade core, a blade shank and possibly a foam lining, and a preform of an outside portion is assembled to it by surrounding it closely before being completely formed by receiving its resin, which is placed into polymerization. A method for producing the propeller blade guarantees good assembly of the portions without defects of form, damage or deformation of a fiber weave.

Method for producing a propeller blade from a composite material

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Etiolles, France

Olivier Foussard