Abstract: A multimedia distribution network, useful on board a passenger aircraft, includes a first network node configured as a head controller, a plurality of second network nodes configured as intermediate controllers connected to the first network node, and a plurality of third network nodes configured as end device controllers, each connected to one of the second network nodes. The head controller is configured to transmit a multicast stream of multimedia control signal packets to control the end device controllers to the intermediate controllers. The intermediate controllers are configured to periodically transmit unicast delay queries to the head controller, to process the received multimedia control signal packets to the end device controllers and to distribute processed multimedia control signal packets with a controllable delay based on the content of unicast delay indicator signals sent by the head controller to the intermediate controllers in response to the unicast delay queries.

Abstract: A device for attaching an object to an attachment rail, particularly a seat rail, in an aircraft or spacecraft. A base part has a support surface to be placed onto an outer surface of the rail, and a locking element to partially protrude from the support surface along a line of protrusion. The base part and locking element are coupled or configured to be coupled wherein the locking element can be moved relative to the base part along the line of protrusion and rotated with respect to the base part. An end section of the locking element has a tip portion shaped in a dovetail-type manner. The device includes a tensioning arrangement for tensioning the locking element with respect to the rail. An arrangement includes such a device as well as an attachment rail with a rail main body and a plurality of bushes. A method for attaching an object, and a seat rail are disclosed.

Abstract: An aircraft propulsion assembly including a front engine mount including a transverse beam which is connected to the engine via first and second convergent connection rods. This transverse beam includes an upper extension which is at least partially positioned opposite a front transverse reinforcement of the primary structure and which is connected thereto via at least one first connection element and right and left lateral extensions which are positioned at one side and another of the upper extension, each of them being connected via a least one second fixing element to a first wing of a right or left bracket, a second wing of the right or left bracket being connected via at least one third connection element to the primary structure.

Abstract: An aircraft empennage includes a vertical tail plane, a rear fuselage section attached to the vertical tail plane and including a skin and internal reinforcing members, a horizontal tail plane comprising two lateral torsion boxes and a framework located between the two lateral torsion boxes comprising a front spar, a rear spar and two ribs extending between the front and the rear spar and each adjacent to a lateral torsion box. The framework encloses a portion of the vertical tail plane along its spanwise direction. The aircraft empennage includes an attachment assembly attaching the framework to the rear fuselage section, the attachment assembly crossing the skin and extends between the internal reinforcing members of the rear fuselage section and the framework.

Abstract: To make an aircraft assembly installation modulable, the latter includes a floor, assembly stations distributed on the floor, and structures for accessing the aircraft during their assembly, each structure being mobile on the ground. The access structures include at least one access structure at an orbital junction between two fuselage sections, at least one access structure at the two junctions between a fuselage section and each of the two aircraft wings, and at least one access structure at the junctions between a rear fuselage section and tail units. In addition, the installation is designed to be able to adopt several distinct configurations, each having a different distribution of the access structures between the assembly stations.

Abstract: A seat rail assembly for fastening a seat assembly in a vehicle and a method for making such a seat rail assembly are described. The seat rail assembly includes a seat rail configured to fasten the seat assembly, the seat rail including a metal material. A fastening profile element of the seat rail assembly is configured to receive the seat rail, the fastening profile element being formed of a plastic material. The fastening profile element forms a receiving region, which is configured to receive the seat rail, and the seat rail includes a seat rail crown which is arranged in the receiving region of the fastening profile element such that a wall portion of the fastening profile element at least partly extends around the seat rail crown. The seat rail assembly may be used in an aircraft.

Abstract: A propulsive electric motor set for aircraft includes an electrical energy source and an electric motor provided with a drive shaft on which is mounted a propeller. The electric motor includes a first set of windings linked to the electrical energy source to provide a rotational drive function for the drive shaft. The electric motor further includes a second set of windings which, when the drive shaft is driven in rotation by an electric powering of the first set of windings, provides an electric generation function configured to supply non-propulsive loads of the aircraft. Thus, the non-propulsive loads of the aircraft can be electrically powered without any overload compromising the aerodynamics of the aircraft.

Abstract: An assembly for a nacelle, which includes a fixed cowl, a movable cowl that is movable between a closed position and an open position, and including an upper edge and a lower edge and, between the two edges, a reinforcing rib. The fixed cowl includes, an upper reinforcing rib and a lower reinforcing rib, a hinge including a fixed part attached to the upper reinforcing rib of the fixed cowl, a movable part attached to the reinforcing rib of the movable cowl, and at least two locks, each one including a first part secured to the lower reinforcing rib and a second part secured to the reinforcing rib of the movable cowl. An assembly of this kind serves to provide access to the inside of the nacelle while ensuring that the cowls remain sufficiently rigid.

Abstract: An aircraft wing is disclosed having a root end, a tip end, a span extending between the root end and the tip end, a leading edge, a trailing edge and a chord extending between the leading edge and the trailing edge, and including a main fixed wing portion having an inboard portion adjacent the root end, and an outboard portion adjacent the tip end. A wing tip device attached to the tip end of the wing; and a movable flight control surface connected at the outboard portion of the main fixed wing portion and having a leading edge, a trailing edge and a chord extending between the leading edge and the trailing edge. A ratio of the local chord length of the movable flight control surface to the local chord length of the wing varies in the spanwise direction.

Abstract: A method of checking tyre pressures using a control device having a wireless communication interface and at least one tyre monitoring device is disclosed. Each tyre monitoring device is mounted on a respective wheel of a vehicle and comprises a wireless communication interface and a pressure sensor for sensing an inflation pressure of a tyre on the respective wheel. The method includes, at the control device: receiving an input and, responsive to the input: identifying a plurality of tyre monitoring devices within a wireless communication range of the control device, wherein the identifying comprises receiving responses from each tyre monitoring device within the wireless communication range, each response including a vehicle identifier associated with a vehicle upon which the tyre monitoring device is installed.

Abstract: A wing (5) for an aircraft (1) including a fixed wing (7), a high-lift device (15) and a hold-down arrangement (27) between two supports (23, 25) and having a first hold-down element (29) attached to the high-lift device (15) and a second hold-down element (31) attached to the fixed wing (7). The first hold-down element (29) contacts the second hold-down element (31) when the high-lift device (15) is in a retracted position to prevent a trailing edge (22) of the high-lift device (15) from detaching from an upper surface (19) of the fixed wing (7). One of the hold-down elements (29, 31) is a load-limited hold-down element (32) which is destroyed when loads transmitted through the hold down elements (29, 31) exceed a threshold. Once destroyed, the trailing edge (22) of the high-lift device (15) is not prevented from detaching from the upper surface (19).

Abstract: A system includes at least one reception unit installed in an aircraft and configured for tracking satellites of the satellite navigation system of the GNSS type. The system includes a generation unit for generating an expected number corresponding to the number of satellites that the reception unit is expected to track, a detection unit including a comparison part for comparing the expected number with a tracked number corresponding to the number of satellites that the reception unit is actually tracking and a decision part for detecting a jamming, as a function of the result of the comparison made by the comparison part and transmitting detection data in the event of detection, and a transmission unit configured to transmit jamming detection data to at least one user device, the system making it possible to detect a jamming of a GNSS system in an automatic and reliable manner.

Abstract: A method for positioning a ram air turbine during its assembly on a primary structure of an aircraft. The method includes the steps of: placing a first distance sensor on a first element among a first flap and the ram air turbine, a second distance sensor on a second element among a second flap and the ram air turbine, the first and second distance sensors being configured to respectively emit first and second signals corresponding to measured values over time of a distance between each of the first and second distance sensors and at least one mobile target attached to the ram air turbine or the first and second flap, pivoting the mast between the retracted and deployed positions, analyzing the first and second signals, and, if necessary, repositioning the ram air turbine according to the step of analyzing the first and second signals.

Abstract: A solid oxide fuel cell stack for an aircraft engine includes ring-shaped fuel cell assemblies of parallel tubular oxide fuel cells circumferentially around a central axis. A first stacking manifold for each fuel cell assembly is in contact with a first side of the individual fuel cell assembly, a second stacking manifold is in contact with a second side of the individual fuel cell assembly, and a central recess for leading an engine shaft through. Each fuel cell includes a tubular anode and tubular cathode, the fuel cell assemblies stacked in an axial direction through pairs of first and second stacking manifolds contacting each other. Each first stacking manifold includes a hydrogen inlet and is connected to first ends of the anodes of the fuel cells. Each second stacking manifold includes a hydrogen and steam outlet and is connected to second ends of the anodes of the fuel cells.

Abstract: A propulsive assembly for aircraft comprising an engine, a nacelle arranged around the engine and a pylon supporting the engine, the nacelle including two engine cowls and reversing cowls, each cowl having an internal skin, characterized in that at least one of the cowls of the nacelle comprises at least one box arranged in a space situated between the internal skin of the cowl and the engine, the box delimiting a volume of inert material, the inert material being flame retardant foam. This box partially blocks a zone of the engine where a fire is likely to begin, which makes it possible to limit the volume of a fire zone of the engine, and thus reduce the quantity of extinguishing agent which is necessary to extinguish a fire in the zone of the engine concerned.

Abstract: A method for operating a frost treatment system including a first heating mat, covering a first zone and an intermediate zone of a second zone, operating alternately at a first energy level adjusted to maintain a first positive temperature on the first zone and a negative temperature on at least a part of the intermediate zone and at a second energy level adjusted to generate a positive temperature on the intermediate zone, a second heating mat covering the second zone apart from the intermediate zone and ensuring the defrosting function for the zone. This solution makes it possible to reduce the energy consumption of the first heating mat by reducing the energy level at which it is powered for most of the time. Also, an outer wall of an aircraft is provided including at least one frost treatment system operating according to this method.

Abstract: A vehicle region with a roof section of a primary structure and with two luggage compartments. One of the luggage compartments comprises a detachable luggage compartment flap and a luggage compartment top, which forms the upper boundary of a part of a luggage space. A detachable fastening device can rotatably fasten the luggage compartment flap on the luggage compartment. A front edge of the luggage compartment top is at a distance from an end point in an intermediate space above a luggage compartment, to which end point a side of a ceiling panel is movable, the distance being greater than or equal to a width of the ceiling panel. Methods for installing and removing a ceiling panel above two luggage compartments are provided, wherein the ceiling panel is guided at least partially through a luggage space of a luggage compartment when the luggage compartment flap has been removed.

Abstract: An aircraft nacelle comprising first and second ducts, each including, in a radial direction, at least one first or second acoustically resistive layer, at least one first or second alveolar structure, as well as a first or second reflective layer. The first and second ducts include first and second flanges which are positioned on transverse planes, oriented towards the interior, and are connected respectively to the first and second reflective layers and are maintained placed against one another by connection elements accessible from the interior of the first and second ducts. The first and second ducts are configured to form at least one receptacle in which there are positioned the first and second flanges as well as the connection elements, the receptacle being closed by at least one cap.

Abstract: A flow body for an aircraft, in particular for a wing leading edge device, is proposed, the flow body having a curved front skin having a leading edge and at least one trailing-edge component coupled with at least one spanwise edge of the front skin, wherein the trailing-edge component comprises a constant cross-sectional profile that tapers in a chordwise direction to form two spanwise flow surfaces that end in a trailing edge, and wherein the trailing-edge component is designed for providing a flush transition between the front skin and at least one of the two spanwise flow surfaces.

Abstract: A front engine attachment system having an engine pylon having a frontal rib fastened against a front face, a front engine attachment having a beam fastened to the frontal rib, two rods articulated to the beam respectively via two connection points and one connection point, and a front casing of an engine, wherein the first rod is articulated to the front casing via a connection point and wherein the second rod is articulated to the front casing via a connection point, wherein each point of connection of a rod to the beam is positioned inside a volume that extends the front face of the engine pylon towards the front. Such a front engine attachment system has reduced bulk and therefore less drag.