Method for fabricating an aircraft fuselage in composite material
View Patent ↗A method for manufacturing an aircraft fuselage includes an internal framework surrounded by an external skin made of composite material, in which the internal framework at least partially constitutes a mould for manufacture and/or the support for the mould for the external skin made of composite material. The disclosed embodiments also relate to an aircraft fuselage produced using this method.
1. A method of fabricating an aircraft fuselage comprising an internal framework which at least partially comprises a mold for fabricating an outer skin made of composite material, the internal framework being wrapped with an outer skin of composite material, the method comprising the following sequential steps:
assembling a plurality of frames and structural parts together, directly around a chuck resting on a frame structure to form the internal framework of the fuselage,
installing shell fixtures in a space between at least two frames of the internal framework and fastening each of the shell fixtures onto the two frames by means of detachable fastening, to fill spaces between frames and obtain a solid structure
depositing a layer of composite material around the solid structure,
firing the solid structure covered with the layer of composite material, and
removing the shell fixtures to obtain the internal framework covered with the outer skin .
2. The method according to claim 1 , wherein the layer of composite material is laid down in the form of fibers impregnated with a resin.
3. The method according to claim 1 , wherein the frames of the internal framework are pre-fabricated.
4. The method according to claim 3 , wherein the pre-fabricated frames are installed in one piece.
5. The method according to claim 1 , wherein the shell fixtures are fastened onto the frames located on either side of said shell fixtures.
6. The method according to claim 1 , wherein the shell fixtures are portions of cylinders.
7. The method according to claim 1 , wherein the shell fixtures are executed in several parts, which promotes their insertion between the frames.
8. The method according to claim 1 , wherein the frames are mounted on a frame structure capable of supporting the internal framework.