METHOD OF PRODUCTION OF A THERMOSTRUCTURAL MONOLITHIC COMPOSITE COMPONENT PART WITH A DOUBLE WALL AND THE PRODUCED COMPONENT PART Russian patent published in 2005 - IPC

FIELD: production of a thermostructural monolithic composite fiber-array component part.

SUBSTANCE: the invention is pertaining to the method of production of a thermostructural monolithic composite fiber-array component part, which includes two surface layers made out of a composite material, spaced one from another and the bound one with another by a set of threadlike connectors made out of a composite material. First they shape a soft structure - sandwich containing a soft intermediate core made out of a material easily penetrable by a needle and penetrable for a resin, and two outside soft filamentary fixtures. The fixtures are located on both counter sides of the soft core. The filamentary fixtures and the core of the given structure - sandwich are connected by sewing with the help of a filament forming tacks. The tacks contain the cuttings of a filament passing through the filamentary fixtures and the core. The structure - sandwich is permeated with a resin being in a viscous state. Then conduct a hardening of the resin, penetrating the structure - sandwich and remove the core. The knitting needle thread is made out of strands containing a set of not linked to each other filaments. After the operation of sewing the cuttings of the filaments passing through the filamentary fixtures and the core make the longitudinal channels inside the latter formed between the filaments passing from one of the filamentary armatures to another. The operation of impregnation is exercised so, that the cured resin can penetrate into the longitudinal channels of the through cuttings of the filaments for formation in the location of each of these channels of the a bridge made out of the resin, the opposite ends of which adjoin the resin penetrating the soft filamentary fixtures. The technical effect of the method is production of a filamentary-array monolithic composite component part without additional operations of impregnation and hardening and a preliminary impregnation of the sewing filaments. Also it is necessary to observe precise positioning of a fibrous structure in the impregnation mould and the optimal use of the mechanical characteristics of the filaments, which form the surface layers.

EFFECT: the invention ensures production of a filamentary-array monolithic composite component part without additional operations of impregnation and hardening and a preliminary impregnation of the sewing filaments.

16 cl, 5 dwg