Abstract: A fuselage element including a fuselage segment including a skin and a junction means for connecting the skin to an adjacent fuselage segment. The fuselage segment extends along a longitudinal axis of the fuselage, and the skin includes a first section at at least one end of the fuselage segment. The fuselage segment includes at least one longitudinal stiffening element for the fuselage. A junction member is arranged so as to contact an outer surface of the first section of the skin, and the stiffening element partially extends to the junction member along the longitudinal axis.

Abstract: A door frame is provided at an opening made in a fuselage of an aircraft that is delimited by a skin. The frame includes an upper longitudinal stiffener and a lower longitudinal stiffener and two vertical substructures, each arranged on one side of the opening, connected by the upper and lower longitudinal stiffeners. The frame also comprises at least one stop provided at the level of the opening that uptakes radial forces exerted by the door. Each vertical substructure comprises at least three walls made of composite material that are connected to one another to form a box substructure having a closed and hollow cross-section in a sectional plane perpendicular to an axis of the length of the vertical substructure.

Abstract: An aircraft nose structure includes a fuselage, a floor for a pressurized space and a nose landing gear bay arranged under the floor, on the opposite side to the space. The bay includes walls that form a pressure barrier, of which there are two lateral panels mechanically secured to the floor by load-reacting members, an upper panel adjacent to the floor and extending between the lateral panels, and a rear panel extending between the upper panel and the fuselage.

Abstract: An aircraft nose structure includes a fuselage and a pressuretight bulkhead fixed at its periphery to the fuselage and transversely dividing the fuselage into a pressurized upper zone and an unpressurized lower zone for accommodating retractable nose landing gear. The pressuretight bulkhead includes a floor of the pressurized upper zone, and a substantially flat rear panel extending between a rear edge of the floor and the fuselage. The floor and the rear panel are fixed laterally to the fuselage. The fuselage includes an exterior wall and reinforcing transverse frames to which the exterior wall is fixed. In line with the pressuretight bulkhead, at least some of the transverse reinforcing frames extend along the outline of the pressurized upper zone and constitute members that reinforce the pressuretight bulkhead.

Abstract: A frame of a door that is provided at an opening made in a fuselage of an aircraft that is delimited by a skin, whereby the frame that includes an upper longitudinal stiffener and a lower longitudinal stiffener provides the connection between two vertical substructures (62) that are arranged on both sides of the opening, at the level of which (5) there is provided at least one stop (56) that provides the uptake of radial forces exerted by the door, characterized in that each vertical substructure (62) includes at least three walls made of composite material that are connected to one another to form a closed and hollow profile in such a way as to obtain a box structure.

Abstract: The invention relates to a fuselage element comprising a fuselage segment (1a) comprising a skin (3a), and junction means (6) for connecting the skin of said segment (1a) to an adjacent segment (1b). The segment (1a) extends along the longitudinal axis (X) of the fuselage, and the skin (3) includes at least one first section (10) at least one end of said segment (1a). The fuselage segment (1a) comprises at least one longitudinal stiffening element (5a) for the fuselage. The junction means (60) are arranged so as to contact an outer surface (30) of said first section (10) of the skin (3a), and the stiffening element (5a) partially extends at the junction means (6) along the longitudinal axis (X).