COMPOSITE TURBOMACHINERY BLADE

• Main Authors: PATRICK FOUCHE, BRUNO JACQUES GERARD DAMBRINE, CHRISTOPHE GERARD REGIS GROSBOIS, JOEL MICHEL DANIEL BENOIT, CATHERINE LAURENCE FRANCOISE GUET, LAURENT JEAN PIERRE DAVID, DANIEL GEORGES GIRAULT
• Format: Patent
• Language: English
• Published: 16.06.1993
• Subjects: AEROPLANES; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; AIRCRAFT; AVIATION; BLASTING; COSMONAUTICS; ENGINE PLANTS IN GENERAL; HEATING; HELICOPTERS; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; LIGHTING; LOOMS; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; METHODS OF WEAVING; NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES; PERFORMING OPERATIONS; PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; STEAM ENGINES; TEXTILES; TRANSPORTING; WEAPONS; WEAVING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; WOVEN FABRICS

A turbomachine blade comprises a central core (1) covered by a plurality of layers (3) of composite material, and an outer sleeve (4) of woven composite material. A network of transverse seams (5) pass through the layers of composite material, and preferably also the core and the outer sleeve. The core may be formed from for example a layer of carbon or glass fibres impregnated with resin. The layers are made from a woven composite material comprising, for example, carbon fibres, ceramic fibres or metallic fibres which may be impregnated with epoxy resin. The seams may be made from fibres of the same type. Such a construction is particularly applicable to large diameter turbine blades.