Method for manufacturing a fuselage component for an aircraft, fuselage component for an aircraft and aircraft
View Patent ↗A method for manufacturing a fuselage component for an aircraft includes building up, on a surface of a two-dimensional shell part composed of a fibre composite material, stiffening profiles crossing at an intersection from a plurality of layers, superimposed on one another in a thickness direction, which are each formed by applying filaments, which each comprise a fibre bundle embedded in a thermoplastic material. Stabilising layers, within which the filaments extend beyond the intersection, are formed from the filaments in each of the stiffening profiles. A fuselage component and an aircraft, which comprises at least one such fuselage component, are furthermore described.
1. A method for manufacturing a fuselage component for an aircraft using material extrusion, the method comprising:
providing a two-dimensional shell part composed of a fibre composite material;
building up of a first stiffening profile on a first surface of the shell part from a plurality of first layers superimposed on one another in a thickness direction (T), each formed by applying first filaments, which each comprise a fibre bundle embedded in a thermoplastic material, wherein the plurality of first layers are applied only along a first longitudinal stiffening direction;
building up of a second stiffening profile, crossing the first stiffening profile at an intersection, on the first surface of the shell part from a plurality of second layers superimposed on one another in the thickness direction, each formed by applying second filaments, which each comprise a fibre bundle embedded in a thermoplastic material, wherein the plurality of second layers are applied only along a second longitudinal stiffening direction;
forming, in the first stiffening profile and in the second stiffening profile, stabilising layers within which the filaments extend beyond the intersection, from the filaments.
2. The method according to claim 1 , wherein the first and second filaments are applied by a pressure head, from which the thermoplastic material is extruded in a thermoplastic state coaxially with the corresponding first and second fibre bundles.
3. The method according to claim 2 , wherein the thermoplastic material and the fibre bundles of the first and second filaments are each fed to the pressure head as ribbon-shaped or filamentary material.
4. The method according to claim 1 , wherein the filaments of the stabilising layers are each applied over an entire longitudinal extent of the first and second stiffening profiles.
5. The method according to claim 1 , wherein the second stiffening profile is built up to a greater height in the thickness direction than the first stiffening profile, and wherein at least one of the stabilising layers of the second stiffening profile in the thickness direction is formed in an area of the second stiffening profile situated above the first stiffening profile.
6. The method according to claim 1 , wherein the first layers of the first stiffening profile and the second layers of the second stiffening profile are each formed alternately as stabilising layers in the thickness direction.
7. The method according to claim 1 , wherein the first stiffening profile and/or the second stiffening profile is formed with a T-shaped, an I-shaped or an Ω-shaped cross section.
8. The method according to claim 1 , wherein the shell part further comprises a thermoplastic matrix material.