Molding core for manufacturing a hollow OMC part

A method of manufacturing a molding core for a production of an organic matrix composite hollow aeronautical part the molding core comprising a composite material comprising a first phase, the first phase is of one of a formulae among Ti3AlC2, Cr2AlC, Zr2AlC, or Zr3AlC2, the composite material comprising a second phase of formula Al4C3, the molding core being obtained by a powder metallurgy process comprising a mixing step in which powders for obtaining the composite material are mixed, and a shaping step.

A method of manufacturing an organic matrix composite hollow aeronautical part using a molding core obtained by a method of manufacturing a molding core, the molding core comprising a composite material comprising a first phase of formula Mn+1AlCn, where n=1 to 3 and M being a transition metal selected from the group consisting of titanium, niobium, chromium or zirconium, the composite material comprising a second phase of formula Al4C3, the molding core being obtained by a powder metallurgy process comprising a mixing step in which powders for obtaining the composite material are mixed, and a shaping step, the method of manufacturing an organic matrix composite hollow aeronautical part comprising, after steps of inserting the molding core into a fibrous preform, impregnating a resin into the fibrous preform and solidifying the resin, a step of knockout the molding core by steaming.