Safran

Safran Landing Systems

Snecma

Messier-bugatti-dowty

Sylvain Didier Leclercq

Dominique Marie Christian Coupe

Quentin Roirand

Nicolas Tran

Bruno Jacques Gerard Dambrine

Thierry Patrick Chauvin

Mathieu Joubert

Franck Lecuyer

Pietro Del Sorbo

Alexandre Hatt

A fibrous preform of a core portion of a fibrous reinforcement for a composite material part, the preform having an elongated shape along a longitudinal direction and being formed by first yarns extending along the longitudinal direction with second yarns transverse to the first yarns, the preform including two longitudinal ends intended for articulation with other parts and a median area located between the longitudinal ends, each longitudinal end having a thickness greater than a thickness of the median area, the median area including a stiffening segment including first non-woven yarns and each longitudinal end including a three-dimensional weave of the first yarns of this stiffening segment with second yarns.

Fibrous reinforcement for the manufacture of a composite part intended to be articulated with other parts

A method for manufacturing a fiber preform for a part, includes weaving a first core texture of elongate shape extending in a longitudinal direction and comprising, in cross section, a central portion having, on its opposite sides, two edges each including two non-interlinked fibrous portions, shaping the first texture which involves at least opening out the non-interlinked portions to form a positioning surface defined by the portions thus opened out and by an interleaved portion, situated between these opened-out portions, which can be formed by a prolongation of the central portion, and positioning a second belt texture over the opened-out lateral portions and the interleaved fibrous portion, the second texture forming a loop around the shaped first texture to define empty spaces for articulation to other parts.

Method for manufacturing a composite material part intended to be articulated to other parts

A tooling for winding a fibrous fabric on a support, allowing gradual modification of the shape of the support as winding progresses, and includes compaction devices to reduce wrinkling of the fabric obtained after compaction.

Machinery for winding a fibrous textured material, and associated winding method

A diaphragm holder for an oleo-pneumatic-type shock absorber includes a tubular body made of thermoplastic material, having one end arranged to hold a diaphragm and an opposite end defining an arched bottom for withstanding pressure forces. An insert is housed in the bottom of the tubular body and is arranged to mechanically reinforce the bottom and to distribute the pressure forces evenly.

Diaphragm holder for an oleo-pneumatic-type shock absorber

The invention relates to fiber reinforcement for making an elongate mechanical part () out of composite material having a lug () at at least one end for receiving a pin for making a pivot connection with another part, the fiber reinforcement being made from a central fiber structure (') for forming a core that is obtained by three-dimensional weaving, from a peripheral fiber structure (&#x2032;) that is to form a belt surrounding the central structure so as to form at least one empty cylindrical space in the lug of the part, and from at least one annular fiber structure (&#x2033;) that is to form a ring that is formed inside the empty space provided between the central structure and the peripheral structure.

Growing community of inventors

MOISSY CRAMAYEL, France

Sylvain Didier Leclercq