A method for manufacturing a composite assembly of an empennage and rear-fuselage having a continuous skin solution. The method obtains parts of the sub-structure. For each part, it is obtained a plurality of stringers performs and frames preforms by composite tooling. The frames are transferred to curing frames molds and a sub-structure skin is obtained. Furthermore, the method includes integrating the parts over an integration tool having cavities for locating the curing frames molds and the stringer performs. Furthermore, the method includes co-curing the integration tool in one shot on an autoclave, demolding the sub-structure skin sections and disassembling the curing frame molds to obtain the composite assembly of the rear section.

A method for manufacturing an aircraft rear section including a tail cone and a vertical tail plane, the method includes: providing pre-cured frames (1) each of which includes a section of the tail cone (2) and a section of the vertical tail plane (3); providing pre-cured stringers (4); placing the pre-cured stringers (4) each in respective positions within the pre-cured frames (1); placing a skin (5) around an external surface of the pre-cured frames (1); and curing the pre-cured frames (1), the pre-cured stringers (4), and the skin (5), forming the final aircraft rear section.

A system and method for forming an aft fuselage section of an aircraft include a forward section having a stabilizer channel. The forward section includes an upper sill beam and a lower sill beam. One or more pivot fittings are securely fastened between the upper sill beam and the lower sill beam. The one or more pivot fittings are configured to pivotally couple to a horizontal stabilizer within the stabilizer channel.

An aircraft with a composite tail boom that comprises at least partly a tubular tail boom cone with an outer skin and an inner skin, wherein the inner skin delimits a hollow interior of the composite tail boom, wherein a plurality of rod-shaped stiffening elements and a plurality of ring-shaped stiffening elements are arranged between the outer skin and the inner skin, the plurality of rod-shaped stiffening elements being oriented in longitudinal direction of the composite tail boom and the plurality of ring-shaped stiffening elements being distributed along the longitudinal direction in the tubular tail boom cone.

A fixed-wing or rotary-wing aircraft has a tail boom that contains a fuel tank. The fuel tank is configured to contain pressurized hydrogen. The pressurized hydrogen fuels a fuel cell stack to generate electricity to rotate one or more rotors or propellers. The fuel tank may define the structure of the tail boom and may support the empennage, tail rotor, propeller, convertible thruster, ducted fan or vectored thruster and associated drive systems with respect to the fuselage. The aircraft has adequate control authority for sustained coordinated flight when the fuel tank is filled with pressurized hydrogen and when the fuel tank is drained of pressurized hydrogen. The same aircraft may not have adequate control authority for coordinated flight if fuel tank was filled with a conventional liquid fuel.

A method for managing at least one aircraft configured to alternately occupy a first configuration suitable for a first flight category not requiring any auxiliary power unit and a second configuration suitable for a second flight category requiring at least one auxiliary power unit. The managing method includes adapting the configuration of the aircraft to the category of the flight to be performed. Thus, when the category of the flight to be performed by the aircraft does not require it, the auxiliary power unit can be removed, this leading to a decrease in on-board weight.

A method for managing at least one aircraft configured to alternately occupy a first configuration suitable for a first flight category not requiring any auxiliary power unit and a second configuration suitable for a second flight category requiring at least one auxiliary power unit. The managing method includes a step of removably mounting, alternately, a lightened first tail cone not including any auxiliary power unit or a second tail cone including at least one auxiliary power unit depending on the first or second category of flights to be performed by the aircraft. A method for managing at least one fleet of aircraft, an aircraft, and a managing device configured to implement the method are each also provided.

An aircraft empennage, comprising a rear fuselage section, a trimmable horizontal tail plane comprising a first and a second lateral torsion box), each comprising a front spar and a rear spar, a front fitting and a rear fitting, an actuator acting on the front fitting for a rotation of the trimmable horizontal tail plane around a hinge axis passing through the rear fitting, the front fitting comprising a first and a second front fitting units being joined to the front spars of the lateral torsion boxes, and the actuator comprising first and a second actuator units, each acting on the first front fitting unit and the second front fitting unit respectively.

A rear pressure bulkhead for aircraft with a semi-recessed integrated engine or, for aircraft of which the cross section of the tail cone in the region of the pressure bulkhead is of the ovoid type with inwardly curving side walls is provided. The cross section of the tail cone of such aircraft is atypical and subjected to loadings that make the application of a known shape of pressure bulkhead unsuitable. The integral membrane of which the geometric shape includes the combination of two substantially spherical half-caps and of a portion of a cylinder of substantially circular cross section joining the two half-caps, the free edges of the cylinder portion being slightly inwardly curved. Such a geometry allows the pressure bulkhead to withstand the loadings present in this zone.

A hydrogen aircraft includes: an airframe including a fuselage and a wing; at least one propulsion system fixed to the airframe; a pressurized chamber disposed inside the fuselage; a pressure bulkhead that is disposed at a rear part of the pressurized chamber and has strength to withstand pressurization of the pressurized chamber; a hydrogen tank that is disposed in an accommodation section and stores liquid hydrogen, the accommodation section being installed behind the pressure bulkhead, outside the pressurized chamber, and inside the fuselage; and a supply line that supplies the liquid hydrogen stored in the hydrogen tank to the propulsion system.