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1. (WO2016051031) METHOD FOR PRODUCING A DOUBLE-WALLED THERMOSTRUCTURAL MONOLITHIC COMPOSITE PART, AND PART PRODUCED

Pub. No.:    WO/2016/051031    International Application No.:    PCT/FR2015/000189
Publication Date: Fri Apr 08 01:59:59 CEST 2016 International Filing Date: Fri Sep 25 01:59:59 CEST 2015
IPC: C04B 35/80
B29C 70/24
Applicants: MBDA FRANCE
AIRBUS DEFENCE AND SPACE GMBH
Inventors: BOUCHEZ, Marc
BEYER, Steffen
SCHMIDT-WIMMER, Stephan
Title: METHOD FOR PRODUCING A DOUBLE-WALLED THERMOSTRUCTURAL MONOLITHIC COMPOSITE PART, AND PART PRODUCED
Abstract:
A fibrous preform (1) is produced, provided with a sandwich structure comprising an intermediate flexible core (4) and two outer fibrous frames (2, 3), respectively arranged on opposing outer faces of said flexible core (4) and assembled by sections of wire (8, 9) passing through said fibrous frames (2, 3), said preform (1) being impregnated with resin. Said preform is then hardened and the core (4) is removed, preferably by pre-densification with chemical vapour infiltration, and the structure produced is then densified with liquid-phase infiltration.