To reduce the footprint of an installation for assembling a fuselage section, a support structure includes a chassis and a core mounted so that it can rotate relative to the chassis about an axis of rotation of the core. The core includes a fastener(s) for holding the longitudinal fuselage portions around the core, with a view to assembling them to form the fuselage section. The support structure includes one or more rolling elements provided on the chassis, in order to allow the movement of this support structure within the installation.

The subject matter discloses a method for replacing a battery for a first vehicle, comprising a second vehicle placing the battery above the first vehicle; releasing the battery from the second vehicle to an inlet in the first vehicle; carrying the battery in a compartment of the first vehicle; coupling the battery to electronic circuitry in the first vehicle, such that the electronic circuitry receives electronic power from the battery. The subject matter also discloses an aerial vehicle used to receive a replacing battery, and a battery replacement system.

The subject matter discloses a method for replacing a battery for a first vehicle, comprising a second vehicle placing the battery above the first vehicle; releasing the battery from the second vehicle to an inlet in the first vehicle; carrying the battery in a compartment of the first vehicle; coupling the battery to electronic circuitry in the first vehicle, such that the electronic circuitry receives electronic power from the battery. The subject matter also discloses an aerial vehicle used to receive a replacing battery, and a battery replacement system.

A method of reassembling a gas turbine engine including steps to support a core engine on a core stand and support a fan case on a fan stand that includes a base frame coupled a fan case frame by a hinge. The fan case frame is arranged to (i) rotate about an axis of the hinge between abutting the base frame and being perpendicular to the base frame, and (ii) tilt about a yaw axis perpendicular to the hinge, which is located in a plane of the fan case frame. The method includes rotating and tilting the fan case frame to align the fan case and core engine, translating at least one of the core engine and the fan case into axial abutment, coupling the fan case and the core engine to reassemble the gas turbine engine, and decoupling the fan case from the fan stand.

A method of reassembling a gas turbine engine including steps to support a core engine on a core stand and support a fan case on a fan stand that includes a base frame coupled a fan case frame by a hinge. The fan case frame is arranged to (i) rotate about an axis of the hinge between abutting the base frame and being perpendicular to the base frame, and (ii) tilt about a yaw axis perpendicular to the hinge, which is located in a plane of the fan case frame. The method includes rotating and tilting the fan case frame to align the fan case and core engine, translating at least one of the core engine and the fan case into axial abutment, coupling the fan case and the core engine to reassemble the gas turbine engine, and decoupling the fan case from the fan stand.

A unit for handling an aircraft turbojet engine includes a frame, a front cradle and a rear cradle designed for supporting the turbojet engine, and a plurality of electric actuators. The cradles include devices for securing the turbojet engine. The plurality of electric actuators includes three electric actuators, where a first one and second one are arranged opposite each other, on either side of a longitudinal axis of the frame, connected to the front cradle and arranged for moving same in vertical translation, and where a third actuator is connected to the rear cradle and arranged for moving the same in vertical translation. The handling unit further includes a device for rotary driving of the front cradle about a longitudinal axis of the turbojet engine.

A unit for handling an aircraft turbojet engine includes a frame, a front cradle and a rear cradle designed for supporting the turbojet engine, and a plurality of electric actuators. The cradles include devices for securing the turbojet engine. The plurality of electric actuators includes three electric actuators, where a first one and second one are arranged opposite each other, on either side of a longitudinal axis of the frame, connected to the front cradle and arranged for moving same in vertical translation, and where a third actuator is connected to the rear cradle and arranged for moving the same in vertical translation. The handling unit further includes a device for rotary driving of the front cradle about a longitudinal axis of the turbojet engine.

A powerplant system is provided that includes a gas turbine engine system and an actuation system. The gas turbine engine system includes a rotating structure, a stationary structure and one or more bearings rotatably mounting the rotating structure to the stationary structure. The actuation system is configured to passively rotate the rotating structure about a rotational axis during transportation of the gas turbine engine system.

A powerplant system is provided that includes a gas turbine engine system and an actuation system. The gas turbine engine system includes a rotating structure, a stationary structure and one or more bearings rotatably mounting the rotating structure to the stationary structure. The actuation system is configured to passively rotate the rotating structure about a rotational axis during transportation of the gas turbine engine system.

Apparatus and methods for an assembly jig are disclosed. The assembly jig includes an elongate support frame that has a first end and a second end, a fixed beam at the second end, transversely oriented to a long axis of the support frame, a pivotable beam at the first end, transversely oriented to the long axis and pivotable in a vertical plane that is substantially perpendicular to the long axis, and a floor contacting transport assembly connected to at least the pivotable beam and configured to enable selective movement of the assembly jig relative to a floor surface.