Snecma

Safran Aircraft Engines

Timothee Elisseeff

Sylvain Corradini

Florian Gaudry

Sophie Essayan

Frederic Imbourg

Guillaume Ratte

Method (S) for protecting against fire a fan casing () comprising a roughly cylindrical barrel () having a main direction extending along a longitudinal axis (X) and an upstream flange () extending radially with respect to the longitudinal axis (X) from an upstream end of the barrel (), the fan casing () being made of a composite comprising a fibrous reinforcement densified by a matrix, said matrix being polymerized, the protection method(S) comprising the following steps:&#x22c5;&#x2014;laying (SI) widths containing glass fibre pre-impregnated with a resin capable of affording the fan casing with thermal protection against fire on an upstream radial face () of the upstream flange (), and &#x22c5;&#x2014;polymerizing (S) the resin in order to obtain a protective layer ().

Fire protection of a fan casing made of composite

A method for manufacturing a turbomachine casing from composite material including: creating a semi-rigid protective layer from dry glass fibers that protects against galvanic corrosion, arranging the protective layer on a profiled mandrel by applying the protective layer against the annular radial flange thereof, forming and densifying the fibrous reinforcement on the mandrel while covering the protective layer.

Method for manufacturing a turbomachine casing from a composite material and associated casing

The invention provides a fan casing for a gas turbine engine, the casing having a substantially cylindrical portion that terminates at one end in an annular flange made of composite material. The flange includes at least one setback in a fraction of its thickness and at least one bolt for fastening pieces of equipment passing right through the flange in the axial direction, the bolt for fastening pieces of equipment having a head that presents a flat that is to bear flat against a rim of the setback, and a shank forming a stud for fastening pieces of equipment on the casing.

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Moissy-Cramayel, France

Timothee Elisseeff