Method for producing a fiber composite component for aerospace

A method for producing a fiber composite component, comprising:

• providing a molding tool;
• introducing a core sleeve into the molding tool for establishing an outer geometry of a molding core to be formed, wherein a cross section of the molding core is trapezoidal;
• providing reinforcing corner profiles in opposing corners of the molding tool, wherein the reinforcing corner profiles include an outer geometry that conforms to an inner geometry of the molding tool;
• filling the core sleeve with a vacuum-fixable filling material;
• applying a vacuum to the core sleeve to vacuum-fix the vacuum-fixable filling material, thereby forming a rigid molding core that is compressed within the core sleeve between the portions of the corner profiles, wherein the molding core is elongated and comprises a length along a first axis and a width along a second axis that is orthogonal to the first axis, wherein the length is greater than the width;
• opening the molding tool and removing the molding core, the core sleeve, and the corner profiles therefrom;
• applying a release layer to the core sleeve, thereby reducing adhesive attachment of a semifinished fiber composite product to the core sleeve, wherein the release layer is applied on a top surface of the core sleeve and is arranged between the core sleeve and the semifinished fiber composite product;
• arranging the molding core, the core sleeve, and the corner profiles which are free of semifinished fiber composite product on a planar surface of a base part comprising semifinished fiber composite products, wherein the molding core is arranged so that the first axis is substantially parallel to the planar surface on the base part, and wherein at least two corner profiles are arranged along the longitudinal axis of the molding core one after the other;
• and
• laying at least one semifinished fiber product over the molding core, the core sleeve, the corner profiles, and the planar surface of the base part for shaping the fiber composite component to be produced.