Abstract

A composite pyrotechnic product containing energetic charges in a plasticized binder includes a cured energetic polymer and at least one energetic plasticizer, wherein: the cured energetic polymer consists of a glycidyl azide polymer (GAP) having a number average molecular weight (Mn) lying in the range 700 g/mol to 3000 g/mol and cured via its hydroxyl terminal functions with at least one curing agent of polyisocyanate type; and the energetic charges present at a content in the range 50% to 70% by weight consisting, for at least 95% of their weight, of large crystals of ammonium dinitramide (ADN) and of small crystals of hexogen (RDX): the large crystals of ammonium dinitramide (ADN) being present at a content in the range 8% to 65% by weight; and the small crystals of hexogen (RDX) being present at a content in the range 5% to 55% by weight.

IPC Classes  ?

• C06B 25/34 - Compositions containing a nitrated organic compound the compound being a nitrated acyclic, alicyclic or heterocyclic amine
• C06B 45/10 - Compositions or products which are defined by structure or arrangement of component or product comprising solid particles dispersed in solid solution or matrix the solid solution or matrix containing an organic component the organic component containing a resin
• C06B 45/02 - Compositions or products which are defined by structure or arrangement of component or product comprising particles of diverse size or shape
• C06B 31/00 - Compositions containing an inorganic nitrogen-oxygen salt
• C08G 59/28 - Di-epoxy compounds containing acyclic nitrogen atoms
• C08G 59/62 - Alcohols or phenols

Abstract

The invention relates to a device (10; 50; 60) for detecting particles, comprising: - at least two flat matrix sensors (11; 52; 61) arranged in different planes, said matrix sensors each comprising a matrix (13; 54) with at least two dimensions of cells, the state of which is able to be modified when crossed by a particle; - and processing means (18; 58; 64) for processing data supplied by said matrix sensors. Said processing means determine a type, trajectory and energy level of an incident particle (21; 31; 57) having crossed at least one of said matrix sensors and having been responsible for depositing charges in at least one cell of at least two of said matrix sensors, from the analysis (80) of the data supplied by said matrix sensors, with spatial and temporal coincidence between the cells of at least two matrix sensors.

IPC Classes  ?

• G01T 1/24 - Measuring radiation intensity with semiconductor detectors

Abstract

A containment device including a curtain that can be deployed from a first wound or folded position into a second unwound position, and a case for storing the curtain in the first position. The case is formed by a plurality of adjacent modules, the plurality of modules including active modules that are equipped with means for retaining and releasing the curtain and passive modules that are not equipped with means for retaining and releasing the curtain.

IPC Classes  ?

• F41H 5/007 - Reactive armourDynamic armour
• E06B 9/06 - Shutters, movable grilles, or other safety closing devices, e.g. against burglary collapsible or foldable, e.g. of the bellows or lazy-tongs type
• E06B 9/13 - Roller shutters with closing members of one piece, e.g. of corrugated sheet metal
• E06B 9/17 - Parts or details of roller shutters, e.g. suspension devices, shutter boxes, wicket doors, ventilation openings
• E04B 1/92 - Protection against other undesired influences or dangers
• F41H 5/24 - ArmourArmour platesShields for stationary use, e.g. fortifications
• G21F 3/00 - Shielding characterised by its physical form, e.g. granules, or shape of the material
• G21F 7/005 - Shielded passages through wallsLocksTransferring devices between rooms

Abstract

A containment device including a dry curtain, adapted to be deployed for the containment or re-containment of a discharge area, such as an opening, e.g. a door, in response to an explosion. The device includes a ballast bar in the lower portion of the curtain, the ballast bar including cylinders of high-density foam alternated with cylinders of compressible low-density foam.

IPC Classes  ?

• E01F 13/00 - Arrangements for obstructing or restricting traffic, e.g. gates, barricades
• E06B 5/12 - Doors, windows, or like closures for special purposesBorder constructions therefor for protection against air-raid or other war-like actionDoors, windows, or like closures for special purposesBorder constructions therefor for other protective purposes against air pressure, explosion, or gas
• E06B 9/06 - Shutters, movable grilles, or other safety closing devices, e.g. against burglary collapsible or foldable, e.g. of the bellows or lazy-tongs type
• E06B 9/17 - Parts or details of roller shutters, e.g. suspension devices, shutter boxes, wicket doors, ventilation openings
• E04B 1/94 - Protection against other undesired influences or dangers against fire
• E04C 3/02 - JoistsGirders, trusses, or truss-like structures, e.g. prefabricatedLintelsTransoms
• E04H 9/04 - Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate against air-raid or other war-like actions
• E06B 1/52 - Frames specially adapted for doors
• E06B 5/16 - Fireproof doors or similar closuresAdaptations of fixed constructions therefor
• E06B 9/13 - Roller shutters with closing members of one piece, e.g. of corrugated sheet metal

Abstract

The invention relates to a floor element for a rail vehicle, formed by: a composite sandwich panel comprising an upper skin, a lower skin and a core; and end cross-members supporting the longitudinal ends of the skins of the panel, said end cross-members comprising flanges that rest on an end structure of the vehicle and forming means for taking-up and distributing connection loads across the width of the floor.

IPC Classes  ?

• B32B 5/02 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by structural features of a layer comprising fibres or filaments
• B32B 15/08 - Layered products essentially comprising metal comprising metal as the main or only constituent of a layer, next to another layer of a specific substance of synthetic resin
• B32B 15/14 - Layered products essentially comprising metal next to a fibrous or filamentary layer
• B32B 15/20 - Layered products essentially comprising metal comprising aluminium or copper
• B32B 27/06 - Layered products essentially comprising synthetic resin as the main or only constituent of a layer next to another layer of a specific substance
• B32B 27/12 - Layered products essentially comprising synthetic resin next to a fibrous or filamentary layer
• B32B 3/02 - Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shapeLayered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
• B32B 3/06 - Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shapeLayered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions for securing layers togetherLayered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shapeLayered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions for attaching the product to another member, e.g. to a support
• B32B 3/08 - Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shapeLayered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts
• B32B 3/12 - Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shapeLayered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. apertured or formed of separate pieces of material characterised by a layer of regularly-arranged cells whether integral or formed individually or by conjunction of separate strips, e.g. honeycomb structure
• B61D 17/10 - Floors
• F16B 5/00 - Joining sheets or plates to one another or to strips or bars parallel to them

Abstract

The invention relates to an aerobraking device (20) for a man-made satellite from an atmospheric planet, including at least one aerobraking sail (25) connected to at least one propellant tank (21) so as to be unfurled by an inflation gas from such a tank (21). At least one leak monitoring device (37) is suitable for releasing a leakage rate of inflation gas in space when each aerobraking sail (25) is unfurled, this leakage rate being suitable to enable a suitable inflation rate to be supplied into the aerobraking sail (25) so as to enable same to be unfurled, and to completely discharge and passivate the propellant tank (21) and the aerobraking sail (25) after same is unfurled. The invention extends to an aerobraking method and to a spacecraft including such a device.

IPC Classes  ?

• B64G 1/24 - Guiding or controlling apparatus, e.g. for attitude control
• B64G 1/62 - Systems for re-entry into the earth's atmosphereRetarding or landing devices
• B64C 3/46 - Varying camber by inflatable elements
• B64C 9/32 - Air braking surfaces
• B64G 1/10 - Artificial satellitesSystems of such satellitesInterplanetary vehicles
• F17C 7/04 - Discharging liquefied gases with change of state, e.g. vaporisation

Abstract

The invention relates to a composite lower chassis of a railway-type vehicle, comprising a base made of a sandwich material having two skin layers separated by a first core made of polymer foam, characterized in that the sandwich material makes up the base and the bottom of the sides of the vehicle and in that one of the skin layers, referred to as lower skin layer and intended to form the outer surface of the vehicle chassis, is covered with a second core made of foam coated with a Kevlar fabric, which forms a shook-proofing protection.

IPC Classes  ?

• B61D 17/00 - Construction details of vehicle bodies
• B61D 17/08 - Sides
• B61D 17/10 - Floors

Abstract

Method for explosion hardening of one or more surfaces (20a) to be treated of a metal part (8) in order to produce a hardened metal part, characterised in that the method comprises a step of placing a liquid explosive (11), contained in at least one concavity of a receptacle (3), in contact with said surfaces (20a) to be treated.

IPC Classes  ?

• C21D 7/04 - Modifying the physical properties of iron or steel by deformation by cold working of the surface
• C21D 10/00 - Modifying the physical properties by methods other than heat treatment or deformation
• C21D 1/04 - General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering with simultaneous application of supersonic waves, magnetic or electric fields

Abstract

The subject of the invention is an assembly and clamping bolt to be employed under tension, having a shank and a head, wherein the head, situated at a first end of the shank, is provided with a clamping tensioning means with a hydraulic cylinder mounted permanently on the bolt, clamping taking place between a rear shoulder device and the hydraulic cylinder, the rear shoulder device being disposed at a second end of the shank.

IPC Classes  ?

• F16B 31/04 - Screwed connections specially modified in view of tensile loadBreak-bolts for maintaining constant tensile load
• B23P 19/06 - Screw or nut setting or loosening machines
• B25B 29/02 - Bolt tensioners

Abstract

A segmented structure includes at least two panels, a so-called main panel and a so-called secondary panel, as well as at least one deployment device configured to move the connected secondary panel into a storage position or into a deployed position. The deployment device includes a translation system provided with at least one helical geared motor configured to translate the secondary panel relative to the main panel. The translation system further includes a rotation system configured to rotate the translation system and the secondary panel connected to the translation system, relative to said main panel.

IPC Classes  ?

• H01Q 19/10 - Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
• H01Q 15/16 - Reflecting surfacesEquivalent structures curved in two dimensions, e.g. paraboloidal
• B64G 1/22 - Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles
• B64G 1/44 - Arrangements or adaptations of power supply systems using radiation, e.g. deployable solar arrays
• B64G 1/66 - Arrangements or adaptations of apparatus or instruments, not otherwise provided for
• H01Q 1/28 - Adaptation for use in or on aircraft, missiles, satellites, or balloons
• H01Q 3/04 - Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole for varying one co-ordinate of the orientation

Abstract

The invention relates to a propulsion unit for a reusable launch vehicle including a rocket engine supported by a cradle. According to the invention, the cradle includes at least three attachment elements for assembling the unit on the structure of the vehicle to which the unit is to be connected, the at least three attachment elements defining a plane for removing the unit, and in which the unit includes one or more fluid and/or electric links of the engine, each one of the links including a free end to be assembled with a corresponding circuit for supplying the vehicle, to which the unit is to be connected, the tip of at least some of the free ends being contained in the removal plane.

IPC Classes  ?

• B64G 1/00 - Cosmonautic vehicles
• B64G 1/40 - Arrangements or adaptations of propulsion systems
• B64G 1/14 - Space shuttles
• B64G 5/00 - Ground equipment for vehicles, e.g. starting towers, fuelling arrangements
• F02K 9/97 - Rocket nozzles
• B64F 5/50 - Handling or transporting aircraft components
• B64G 1/64 - Systems for coupling or separating cosmonautic vehicles or parts thereof, e.g. docking arrangements

Abstract

The invention relates to a reinforced composite panel (1, 1') comprising a first skin (2) and a second skin (3) made of fibres bound by a polymer resin on either side of a polymer mousse core (4) or a honeycomb, for which panel at least one profile member (5, 6) is arranged in the panel between plates (4a, 4b, 4c, 4'a, 4'b) of said core and glued to said skins, said profile member comprising at least one first wall (5a, 6a) in contact with the second skin (3) on the core side, and at least one second wall (5b1, 5b2, 6b) in contact with the first skin (2) on the core side, said first and second walls being connected by at least one lateral wall of the profile member, which wall breaks up the core, the panel comprising, in the profile member(s) (5, 6), a reinforcement plate (8) placed below the upper wall of the profile member (5a, 6a), said wall being sandwiched between the reinforcement plate and the second skin.

IPC Classes  ?

• B32B 5/00 - Layered products characterised by the non-homogeneity or physical structure of a layer
• B32B 5/02 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by structural features of a layer comprising fibres or filaments
• B32B 5/18 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by features of a layer containing foamed or specifically porous material
• B32B 5/22 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by the presence of two or more layers which comprise fibres, filaments, granules, or powder, or are foamed or specifically porous
• B32B 5/24 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by the presence of two or more layers which comprise fibres, filaments, granules, or powder, or are foamed or specifically porous one layer being a fibrous or filamentary layer
• B32B 7/00 - Layered products characterised by the relation between layers Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties Layered products characterised by the interconnection of layers
• B32B 7/02 - Physical, chemical or physicochemical properties
• B32B 7/04 - Interconnection of layers
• B32B 7/12 - Interconnection of layers using interposed adhesives or interposed materials with bonding properties
• B32B 15/00 - Layered products essentially comprising metal
• B32B 15/04 - Layered products essentially comprising metal comprising metal as the main or only constituent of a layer, next to another layer of a specific substance
• B32B 27/00 - Layered products essentially comprising synthetic resin
• B32B 27/06 - Layered products essentially comprising synthetic resin as the main or only constituent of a layer next to another layer of a specific substance
• B32B 27/08 - Layered products essentially comprising synthetic resin as the main or only constituent of a layer next to another layer of a specific substance of synthetic resin of a different kind
• B32B 27/18 - Layered products essentially comprising synthetic resin characterised by the use of special additives
• B32B 1/00 - Layered products having a non-planar shape
• B32B 1/08 - Tubular products
• B32B 3/00 - Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shapeLayered products comprising a layer having particular features of form
• B32B 3/02 - Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shapeLayered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
• B32B 3/08 - Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shapeLayered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts
• B32B 3/10 - Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shapeLayered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. apertured or formed of separate pieces of material
• B32B 3/12 - Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shapeLayered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. apertured or formed of separate pieces of material characterised by a layer of regularly-arranged cells whether integral or formed individually or by conjunction of separate strips, e.g. honeycomb structure
• B32B 3/18 - Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shapeLayered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. apertured or formed of separate pieces of material characterised by an internal layer formed of separate pieces of material
• B32B 3/20 - Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shapeLayered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. apertured or formed of separate pieces of material characterised by an internal layer formed of separate pieces of material of hollow pieces, e.g. tubesLayered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shapeLayered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. apertured or formed of separate pieces of material characterised by an internal layer formed of separate pieces of material of pieces with channels or cavities

Abstract

The invention relates to an end plate-type handling interface (1) that is provided with a means (2) for coupling to a lifting device, and with an aperture (3), for receiving a lifting means (4), such as a rod comprising a groove (5), the interface comprising a protective device in the form of a cover (6) that is capable of covering a portion that comprises the aperture (3) of one surface of the end plate (1).

IPC Classes  ?

• B66C 1/66 - Load-engaging elements or devices attached to lifting, lowering, or hauling gear of cranes, or adapted for connection therewith for transmitting forces to articles or groups of articles by mechanical means comprising article-engaging members of a shape complementary to that of the articles to be handled for engaging holes, recesses, or abutments on articles specially provided for facilitating handling thereof
• B66C 1/10 - Load-engaging elements or devices attached to lifting, lowering, or hauling gear of cranes, or adapted for connection therewith for transmitting forces to articles or groups of articles by mechanical means

Abstract

The invention relates to a composite panel (1) including an upper skin and a lower skin (10, 11) on either side of a core (12) made of foam or having a honeycomb structure, which includes, at an edge of the composite panel, an assembly end piece comprising a reinforcing element (13a, 13b, 13c) built into the panel and extending along the edge of the panel, the reinforcing element comprising at least one first wall (14a, 14'a, 14"a) opposite one of said skins, at least one second wall (14b, 14c, 14d, 14e) opposite the other of said skins and at least one connecting wall (15a, 15b, 15c, 15d, 15e) between said first and second walls, the assembly end piece further comprising, beyond the reinforcing element, a border (17) returning to the skin that is produced by rigidly interconnecting the two skins (10, 11).

IPC Classes  ?

• B29C 70/68 - Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers
• B32B 5/18 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by features of a layer containing foamed or specifically porous material

Abstract

According to the present invention, use is made of a probe provided with a central sensor, with off-centered sensors and lateral sensors, and said probe is articulated on the aircraft around two orthogonal axes.

IPC Classes  ?

• G01P 13/02 - Indicating direction only, e.g. by weather vane

Abstract

Le procédé de caractérisation du fonctionnement d'un système complexe, comprend - une étape d'obtention, dans un espace multidimensionnel dont des axes sont représentatifs chacun d'une performance d'un sous-système du système représenté aux fins de la caractérisation, d'une population de points de fonctionnement du système, - puis une étape de construction d'une pluralité de domaines limites de l'espace, construits chacun comme englobant, autour d'un point de référence, une proportion de la population définie dans le plan du sous- système considéré, correspondant à une projection des points de fonctionnement obtenus au niveau du système dans le plan du sous- système considéré, - puis, pour chaque sous-système, une étape de définition de domaines qualifiants par un dénombrement des points de la population au-delà d'une limite donnée, - et en fonction du résultat du dénombrement et d'un objectif de proportion de la population défini pour le système, l'application d'une adaptation des domaines pour définir des domaines modifiés caractérisant un fonctionnement des sous-systèmes approchant un objectif défini pour le système.

IPC Classes  ?

• G06Q 10/04 - Forecasting or optimisation specially adapted for administrative or management purposes, e.g. linear programming or "cutting stock problem"
• G06Q 50/04 - Manufacturing

Abstract

The invention relates to a method and a device for the laser control of the state of a surface. According to the invention, said surface (2) is swept by a control laser beam (5) focussed by an optical system (6) and the focal distance of said optical system (6) is adjusted according to the distance between same and said surface (2).

IPC Classes  ?

• G01S 17/02 - Systems using the reflection of electromagnetic waves other than radio waves
• G01B 11/00 - Measuring arrangements characterised by the use of optical techniques
• G01N 21/39 - Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using tunable lasers
• G03B 3/00 - Focusing arrangements of general interest for cameras, projectors or printers
• G01N 21/88 - Investigating the presence of flaws, defects or contamination
• G03B 5/00 - Adjustment of optical system relative to image or object surface other than for focusing of general interest for cameras, projectors or printers

Abstract

The invention relates to a combustion gas discharge nozzle for a rocket engine including a stationary part and a moving part extending from the stationary part, the moving part made using flaps positioned downstream from the stationary part and forming an extension of the nozzle, the nozzle including a sealing device extending between the fixed part and the moving part in the form of a flexible membrane withstanding a local temperature of the combustion gases at the nozzle outlet and connecting the end of the stationary part to a border of the flaps or petals forming the moving part, the flexible membrane forming an annular tubing, the sealing device being provided with a duct for injecting gas at the flexible membrane between the stationary part and the moving part extending the nozzle.

IPC Classes  ?

• F02K 9/86 - Rocket-engine plants, i.e. plants carrying both fuel and oxidant thereforControl thereof characterised by thrust or thrust vector control using nozzle throats of adjustable cross-section
• F02K 1/80 - Couplings or connections
• F02K 9/90 - Rocket-engine plants, i.e. plants carrying both fuel and oxidant thereforControl thereof characterised by thrust or thrust vector control using deflectors
• F02K 9/97 - Rocket nozzles

Abstract

A device for modulating a gas ejection section (130) intended to be positioned in a nozzle (120) upstream from the throat (121) of said nozzle, the modulation device comprising: - a needle (133) having a downstream end (1331) forming a partial sealing member for the nozzle throat (121), - a needle guide (134) comprising an inner housing (1341) in which the upstream end (1330) of the needle (133) is present. The upstream end (1330) of the needle is capable of sliding into the inner housing (1341) of the needle guide (132) between a first position in which said upstream end of the needle is present in an upstream portion (1341a) of the inner housing (1341) and a second position in which said upstream end is present in a downstream portion (1341b) of the inner housing (1341). The upstream end (1330) of the needle (133) is kept in the first position by at least one holding element (135) capable of breaking under the effect of heat.

IPC Classes  ?

• F02K 9/86 - Rocket-engine plants, i.e. plants carrying both fuel and oxidant thereforControl thereof characterised by thrust or thrust vector control using nozzle throats of adjustable cross-section
• F02K 9/97 - Rocket nozzles

Abstract

The invention relates to a method for manufacturing an antenna reflector shell (1), wherein said shell (1) includes a sandwich structure (4), provided with a central element (5) and two skins (6, 7) arranged on either side of the central element (5) and including one skin (6) referred to as front skin, said front skin (6) reflecting electromagnetic radiation and being made of a composite material. Said method includes a perforation step that involves, during the production of the shell (1), perforating the shell (1) such as to make a plurality of holes therein that pass entirely through the shell (1).

IPC Classes  ?

• H01Q 1/28 - Adaptation for use in or on aircraft, missiles, satellites, or balloons
• H01Q 15/14 - Reflecting surfacesEquivalent structures

Abstract

The process for manufacturing an antenna reflector body, said body (1) comprising at least one face skin (6), the face skin (6) reflecting electromagnetic radiation and being made of a composite material comprising at least one main stack (8) containing at least one ply (P1, P2, P3), comprises a step consisting, during the manufacture of the face skin (6), in providing, in addition to the main stack (8), a high-strength additional ply (PO), this additional ply (PO) having a mechanical strength higher than that of the at least one ply (P1, P2, P3) of the main stack (8), and a perforating step consisting in perforating at least the face skin (6) so as to produce therein a plurality of through-holes.

IPC Classes  ?

• H01Q 1/28 - Adaptation for use in or on aircraft, missiles, satellites, or balloons
• H01Q 15/14 - Reflecting surfacesEquivalent structures

Abstract

The invention relates to the field of fueling devices, in particular regarding ground refueling of rockets. A fueling device (4) according to the invention comprises at least two mutually complementary fueling connectors (5, 6), a breakable connection member (15) connecting said two fueling connectors (5, 6) and having a break-off section (15c) between said two fueling connectors (5, 6), and a force-transmission member (16) connected to said break-off section (15c) such as to transmit to same a breaking load to unlock the connection between the two fueling connectors (5, 6). During unlocking, a breaking load transmitted by the force-transmission member (16) thus ensures the breaking of the break-off section (15c).

IPC Classes  ?

• B64G 5/00 - Ground equipment for vehicles, e.g. starting towers, fuelling arrangements

Abstract

The present invention relates to composite explosive products and the preparation thereof. Said products have: - a composition, expressed in weight percentages, which contains: from more than 85 to 92%, advantageously from 88 to 90%, of organic energetic charges; said organic energetic charges a) being selected from octogen (HMX), hexogen (RDX), hexanitrohexa­azaisowurtzitane (CL20) and penthrite (PETN) charges and mixtures thereof and b) having a particle size distribution with a D90 value of less than 15 µm and a D50 value of less than or equal to 5 pm; and from more than 7 to 12%, advantageously from 8 to 10%, of a polymeric rubber selected from polyurethane-polyester rubbers, polyurethane-polyether rubbers and mixtures thereof, the number-average molecular weight of which is greater than 20 000 g/mol and the Mooney viscosity of which is between 20 and 70 ML (5 + 4) at 100°C; and - a thickness of from 0.4 to 5 mm, advantageously from 1 to 2 mm. Said products may in particular consist of miniaturized systems for multipoint initiation of explosive charges.

IPC Classes  ?

• C06B 21/00 - Apparatus or methods for working-up explosives, e.g. forming, cutting, drying
• C06B 45/12 - Compositions or products which are defined by structure or arrangement of component or product having contiguous layers or zones
• C06B 45/10 - Compositions or products which are defined by structure or arrangement of component or product comprising solid particles dispersed in solid solution or matrix the solid solution or matrix containing an organic component the organic component containing a resin

Abstract

The present invention concerns a composite pyrotechnic product, enclosing ADN and RDX charges in a plasticised binder, comprising an energetic cross-linked GPA polymer, and at least one energetic plasticiser, and the preparation of same. The invention is characterised in that: - said energetic cross-linked polymer consists of a glycidyl polyazide (GPA), having a number average molecular weight (Mn) of between 700 and 3000 g/mol, cross linked, via the hydroxyl terminal functions of same, with at least one polyisocyanate crosslinking agent; and - said energetic charges, present in a mass ratio of 50 to 70 %, consist, for at least 95 % of the mass of same, of large ammonium dinitramide (ADN) crystals and small hexogen (RDX) crystals: + said large ADN crystals being present in a mass ratio of 8 to 65 %, advantageously of 10 to 60 %, and + said small hexogen crystals (RDX) being present in a mass ratio of 5 to 55 %, advantageously of 8 to 50 %.

IPC Classes  ?

• C06B 23/00 - Compositions characterised by non-explosive or non-thermic constituents
• C06B 45/10 - Compositions or products which are defined by structure or arrangement of component or product comprising solid particles dispersed in solid solution or matrix the solid solution or matrix containing an organic component the organic component containing a resin
• C06B 45/02 - Compositions or products which are defined by structure or arrangement of component or product comprising particles of diverse size or shape

Abstract

The main subject of the present invention is an efficient composite pyrotechnic product, with no lead in the composition thereof, the production of which on an industrial scale does not encounter a problem of pot life of the intermediate paste. Said product contains, in a plasticized binder, comprising a crosslinked energetic polymer and at least one energetic plasticizer, organic energetic fillers and a combustion catalyst. Characteristically, said crosslinked energetic polymer consists of a polyglycidyl azide (PAG), having a number-average molecular mass (Mn) of between 700 and 3000 g/mol, crosslinked, via its terminal hydroxyl functions, with at least one crosslinking agent of polyisocyanate type, and said combustion catalyst consists of bismuth citrate.

IPC Classes  ?

• C06B 23/00 - Compositions characterised by non-explosive or non-thermic constituents
• C06B 45/10 - Compositions or products which are defined by structure or arrangement of component or product comprising solid particles dispersed in solid solution or matrix the solid solution or matrix containing an organic component the organic component containing a resin

Abstract

The invention relates to a method for starting a spacecraft engine combustion wherein: a propellant tank heater (25) is ignited; a first tank (23), containing the first propellant, and a second tank (24), containing a second propellant, are pressurized once the heater (25) reaches a stable state, and a first tank (13) of igniter of the first gas propellant and a second tank (14) of igniter of the second gas propellant are respectively filled, in parallel, until ignition threshold values for temperature (T13, T14) and pressure (P13, P14) are reached; and the first and second gas propellants, contained in the first (13) and second (14) igniter tanks, are injected into an igniter (12) of the engine such as to initiate combustion.

IPC Classes  ?

• F02K 9/50 - Feeding propellants using pressurised fluid to pressurize the propellants
• F02K 9/94 - Re-ignitable or restartable rocket-engine plantsIntermittently operated rocket-engine plants
• F02K 9/95 - Rocket-engine plants, i.e. plants carrying both fuel and oxidant thereforControl thereof characterised by starting or ignition means or arrangements

Abstract

The invention relates to a method of generating electricity (e) with a fuel cell (1) comprising successively: a phase in which the cell (1) is primed; and a phase in which the cell (1) functions at a stable rate, during which the cell (1), fed with a hydrogenated gas (G'), generates electricity (e) and heat. According to this method, in order to prime the cell (1), it is fed with a hydrogenated gas (G) comprising at least 70 vol.% hydrogen, generated by self-sustaining combustion of at least one hydrogenated gas-generating solid pyrotechnic charge (A); and while it is operating at a stable rate, the cell (1) is fed with a hydrogenated gas (G') containing at least 85 vol.% hydrogen, generated by thermal decomposition of at least one hydrogenated gas-generating solid pyrotechnic charge (B); a portion (q1) of the heat produced by the operating cell (1) being transferred to the at least one solid charge (B) in order to start and maintain the thermal decomposition thereof. The invention also relates to a device suitable for implementing this method.

IPC Classes  ?

• H01M 8/06 - Combination of fuel cells with means for production of reactants or for treatment of residues
• C01B 3/06 - Production of hydrogen or of gaseous mixtures containing hydrogen by reaction of inorganic compounds containing electro-positively bound hydrogen, e.g. water, acids, bases, ammonia, with inorganic reducing agents
• H01M 8/04 - Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids

Abstract

The invention relates to a car (1) belonging to a rolling vehicle, characterised in that it comprises sidewalls (2) in the form of a single piece made from composite material comprising a sandwich structure (10) provided with a first skin (11) on the outside of the car, a second skin (12) on the inside of the car and a closed-cell foam (13a) or honeycomb (13b) core between the skins, said walls being provided with window openings (20) formed by interruptions in the drapes of longitudinal fibres, transverse fibres and intersecting diagonal fibres (100), said openings (20) having a polygonal shape that reduces the surface area of interrupted diagonal fibres (100) in the corners of the openings.

IPC Classes  ?

• B61D 17/00 - Construction details of vehicle bodies

Abstract

Nozzle (1) of a spacecraft engine (M), comprising a fixed portion (2) and a moving portion (3), the nozzle (1) comprising a pneumatic deployment system (4) comprising: - a deployment cylinder (5), deploying the moving portion (3) of the nozzle (1), - an upper unlocking cylinder (6), - a lower unlocking cylinder (7), - and an ejector (41), the deployment system (4) comprising a power supply system (8) configured so as to, sequentially: - move the deployment cylinder (5) from the support position thereof to the deployment position there of; - move the upper (6) and lower (7) unlocking cylinders into their upper and lower unlocking positions; - and activate the ejector in such a way as to eject the deployment system (4) out of the nozzle (1).

IPC Classes  ?

• F02K 9/76 - Rocket-engine plants, i.e. plants carrying both fuel and oxidant thereforControl thereof combined with another jet-propulsion plant with another rocket-engine plantMultistage rocket-engine plants
• F02K 9/78 - Rocket-engine plants, i.e. plants carrying both fuel and oxidant thereforControl thereof combined with another jet-propulsion plant with an air-breathing jet-propulsion plant

Abstract

The invention relates to the field of jet propelled craft and more specifically to a method for eliminating the POGO effect in such a craft (1). A supply system (4) feeding the jet engine (2) of the craft (1) is equipped with a hydraulic accumulator (8) making it possible to select between a number of predetermined operating levels each corresponding to a different volume of gas. According to this method, if a first reference criterion is not satisfied by the current level, the method commands a transition of the hydraulic accumulator (8) preferably to an alternative level, selected from alternative levels for which the first reference criterion is satisfied and for which no hydraulic resonant frequency crosses any current mechanical resonant frequency during the transition.

IPC Classes  ?

• F02K 9/56 - Control

Abstract

A pyrotechnic actuator (10) comprises a body (12), and a propelling system (50) comprising a pyrotechnic igniter (20) mounted inside said body (12). According to the invention, the pyrotechnic igniter (20) is mounted inside the body (12) such that a peripheral gap (60) is formed between the body (12) and the pyrotechnic igniter (20) and the propelling system (50) further comprises a sealing gasket (62) arranged inside the gap (60) in such a manner that the pyrotechnic igniter (20) is maintained in position with respect to the body (12).

IPC Classes  ?

• F15B 15/19 - Pyrotechnical actuators

Abstract

A pyrotechnic circuit breaker (1), comprising a body (2), an igniter (4), a piston (5) and a bus bar (6), wherein wherein the piston (5) comprises a cutting edge (51) and is adapted to move along a normal direction (Z-Z) from a raised position to a lowered position to cut a portion of the bus bar (6), thereby separating the bus bar (6) into two distinct portions in order to break the electrical conduction of the bus bar (6), wherein the body (2) comprises a longitudinal slot (21) arranged through a longitudinal direction (X-X) of the body (2), perpendicular to the normal direction (Z-Z), wherein the bus bar (6) and the longitudinal slot (21) are configured so that the bus bar (6) can be slidably inserted within the insertion slot (21), characterized in that the pyrotechnic circuit breaker (1) further comprises a drawer (7) adapted to be slidably inserted within the longitudinal slot (21) of the body (2), so that once inserted in the body (2), the drawer (7) and the body (2) define an insertion slot through the body (2) where the bus bar (6) is slidably inserted.

IPC Classes  ?

• H01H 39/00 - Switching devices actuated by an explosion produced within the device and initiated by an electric current

Abstract

The invention relates to a method for manufacturing and monitoring a part (1). The method comprises the following steps: a) treating a substrate comprising aluminum by means of a chemical conversion method using a treatment solution comprising chromium at oxidation degree +III such as to obtain a part (1) having a chemical conversion layer (3); and b) monitoring the presence of the chemical conversion layer (3) obtained during Step a) by measuring, through the use of colorimetry, the color of said chemical conversion layer (3) and comparing said measured color with a reference color.

IPC Classes  ?

• C23C 22/77 - Controlling or regulating of the coating process
• C25D 11/24 - Chemical after-treatment
• G01J 3/46 - Measurement of colourColour measuring devices, e.g. colorimeters

Abstract

A pyrotechnic circuit breaker (1), comprising a body (2), an igniter (4), a piston (5) and a bus bar (6), wherein the igniter (4), the piston (5) and the bus bar (6) are adapted to be accommodated within the body (2), and wherein the piston (5) comprises a cutting edge (51) and is adapted move along a normal direction (Z-Z) to cut a portion (61) of the bus bar (6), thereby separating the bus bar (6) into a proximal portion and a distal portion in order to break a circuit, wherein the cutting edge (51) of the piston (5) is stepped so that the portion of the bus bar (6) is cut sequentially, in at least two successive cutting operations along the movement of the piston (5) from a raised position to a lowered position, characterized in that the bus blade (6) comprises a breakable portion (61) configured to be cut by the cutting edge (51) of the piston (5), wherein said breakable portion (61) comprises slots (62) in order to divide the breakable portion (61) into multiple sub-portions (61a, 61b, 61c) that are adapted to be cut sequentially by the stepped cutting edge (51) of the piston (5).

IPC Classes  ?

• H01H 39/00 - Switching devices actuated by an explosion produced within the device and initiated by an electric current

Abstract

The subject of the invention is a device for destroying dangerous objects such as shells, munitions or other charges that are to be destroyed (100, 101, 102) by detonating them, which device comprises a packaging (1) produced from a flat blank (10, 10') folded on itself along three folds (p1, p2, p3), four folds (p1, p2, p3, p4) or more in order to form at least three sides and two half-sides (11, 12, 13, 14a, 14b), four sides (11, 12, 13, 14) or four sides (11, 12, 13, 14) and a flap (15) for closing the packaging (1) which is produced in the form of a tubular package of polygonal and notably square or rectangular cross section once the flat blank has been folded up, with explosive charges (20, 21) placed on the sides that are to be folded, said flat blank being of dimensions suited to being able to house, in the middle of the tubular package in contact with the explosive charges (20, 21), one or more of said dangerous objects that are to be destroyed (100, 101, 102). - Application to the destruction of objects such as munitions by controlled explosion.

IPC Classes  ?

• F42D 5/04 - Rendering explosive charges harmless, e.g. destroying ammunitionRendering detonation of explosive charges harmless

Abstract

The invention concerns a method for producing, by welding, a link between an element made from any material, for example metal, and an element made from a thermoplastic-matrix composite material, the second element being produced by depositing a textile yarn pre-impregnated with a thermoplastic material on the surface of the first element. The method mainly includes an operation consisting of producing an interface coating consisting of an epoxy resin filled with a thermoplastic material powder, coating the surface of the element made from any material with same, and leaving the coating to polymerize. It next includes an operation consisting simultaneously of forming the second element and welding same to the coating deposited on the surface of the first element by locally heating the two elements, when depositing the pre-impregnated textile on the first element.

IPC Classes  ?

• B32B 37/00 - Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
• B29C 65/02 - Joining of preformed partsApparatus therefor by heating, with or without pressure
• B29C 65/00 - Joining of preformed partsApparatus therefor
• F16J 12/00 - Pressure vessels in general
• F17C 1/00 - Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
• B29C 53/60 - Winding and joining, e.g. winding spirally helically using internal forming surfaces, e.g. mandrels
• B29L 31/00 - Other particular articles
• B29C 65/48 - Joining of preformed partsApparatus therefor using adhesives
• B29C 63/24 - Lining or sheathing, i.e. applying preformed layers or sheathings of plasticsApparatus therefor using threads

Abstract

Device for protecting from lightning (30), said device being intended to form at least a portion of an external surface of a structure to be protected and comprising a ground plane (32), a dielectric substrate (34) arranged on the ground plane, and an array of first metal elements (36) arranged on the dielectric substrate (34) and extending substantially parallel to the ground plane (32) in such a way that any pair of consecutive elements from said first metal elements (36) is separated by a distance comprised between 0.01 millimetres and 10 millimetres, said first metal elements being distributed in juxtaposed similar patterns, each of said patterns including first metal elements of different dimensions corresponding respectively to different electromagnetic resonant frequencies the juxtaposition of which defines an electromagnetic absorption band of the pattern.

IPC Classes  ?

• B64D 45/02 - Lightning protectorsStatic dischargers
• F03D 11/00 - Details, component parts, or accessories not provided for in, or of interest apart from, the other groups of this subclass
• H02G 13/00 - Installations of lightning conductorsFastening thereof to supporting structure

Abstract

The invention relates to a containment device comprising a curtain (1) that can be deployed from a first wound or folded position into a second unwound position, and a case for storing the curtain in the first position. The case is formed by a plurality of adjacent modules (2a, 2b, 2c, 2d), the plurality of modules comprising active modules (2b) that are equipped with means for retaining and releasing the curtain and passive modules (2a, 2c, 2d) that are not equipped with means for retaining and releasing the curtain (1).

IPC Classes  ?

• E06B 9/06 - Shutters, movable grilles, or other safety closing devices, e.g. against burglary collapsible or foldable, e.g. of the bellows or lazy-tongs type
• E06B 5/12 - Doors, windows, or like closures for special purposesBorder constructions therefor for protection against air-raid or other war-like actionDoors, windows, or like closures for special purposesBorder constructions therefor for other protective purposes against air pressure, explosion, or gas
• E06B 9/13 - Roller shutters with closing members of one piece, e.g. of corrugated sheet metal
• E06B 9/17 - Parts or details of roller shutters, e.g. suspension devices, shutter boxes, wicket doors, ventilation openings

Abstract

The invention relates to a containment device comprising a dry curtain (1), adapted to be deployed for the containment or recontainment of a discharge area, such as an opening, e.g. a door, in response to an explosion. The device comprises a ballast bar (4) in the lower portion of the curtain, said ballast bar including cylinders (41) of high-density foam alternated with cylinders (42) of compressible low-density foam.

IPC Classes  ?

• E06B 9/06 - Shutters, movable grilles, or other safety closing devices, e.g. against burglary collapsible or foldable, e.g. of the bellows or lazy-tongs type
• E06B 5/12 - Doors, windows, or like closures for special purposesBorder constructions therefor for protection against air-raid or other war-like actionDoors, windows, or like closures for special purposesBorder constructions therefor for other protective purposes against air pressure, explosion, or gas
• E06B 9/17 - Parts or details of roller shutters, e.g. suspension devices, shutter boxes, wicket doors, ventilation openings

Abstract

A device for mounting and supporting a generally cylindrical or tapered tank, having a main axis X, that includes a pair of first retaining rods for retaining the tank along a vertical axis Z on each of a first and second end of the tank, a second retaining rod for retaining the tank along a horizontal axis Y, perpendicular to the main axis, on the first end of the tank, and a third retaining rod for retaining in a ball-and-socket joint, the means being located around the vertical axis and connected to the second end of the tank.

IPC Classes  ?

• B64G 1/40 - Arrangements or adaptations of propulsion systems
• B64D 37/30 - Fuel systems for specific fuels
• F17C 13/00 - Details of vessels or of the filling or discharging of vessels
• B64D 37/04 - Arrangement thereof in or on aircraft
• B64D 37/06 - Constructional adaptations thereof

Abstract

According to the invention, this system comprises:- a single magnetometer (9) delivering, according to three axes of said craft, measurements of the surrounding magnetic field; - calculation means (12) for calculating, on the basis of said measurements delivered by said magnetometer (9), a magnetometric estimation of the linear speed of said craft; and - adjustment means (13) for adjusting satellite estimations of the position and of the linear speed of said craft with the aid of said magnetometric estimation of the linear speed of said craft.

IPC Classes  ?

• G01S 19/49 - Determining position by combining or switching between position solutions derived from the satellite radio beacon positioning system and position solutions derived from a further system whereby the further system is an inertial position system, e.g. loosely-coupled
• G01C 21/28 - NavigationNavigational instruments not provided for in groups specially adapted for navigation in a road network with correlation of data from several navigational instruments

Abstract

The present invention relates to a method for producing borazane (NH3-BH3). The method includes: providing a reactor (1), provided with stirring means and a thermostat set to a temperature of θ1 to 40 °C; injecting anhydrous liquid ammonia (NH3(l)) into said reactor (1); injecting a borane-amine complex (Am.BH3) into said reactor (1) containing the anhydrous liquid ammonia (NH3(l)) while stirring, wherein said borane-amine complex (Am.BH3), the corresponding amine (Am) of which is only soluble in anhydrous liquid ammonia at a rate of less than 10 g in 100 g of ammonia at 20 °C, is injected in an amount such that the molar ratio R = anhydrous liquid ammonia (NH3(l)) / borane-amine complex (Am.BH3) is no lower than 5; stirring the mixture; halting the stirring and obtaining, within said reactor (1), two demixed phases: a light phase (1a) made up essentially of an anhydrous liquid ammonia solution (NH3(l)) containing borazane, and a heavy phase (1b) made up essentially of the amine (Am) corresponding to the injected borane-amine complex (Am.BH3); isolating said borazane and vacuum drying same; said temperature θ1 being no lower than the melting temperature of said borane-amine complex (Am.BH3).

IPC Classes  ?

• C01B 35/14 - Compounds containing boron and nitrogen, phosphorus, sulfur, selenium or tellurium
• C07F 5/02 - Boron compounds

Abstract

The polygonal part (1) has, on each side (C1 to C6), at least one of the following assembly elements: at least one lug (3), at least one recess (4), each of said lugs (3) and each of said recesses (4) of the part (1) having a trapezoidal shape, with in each case complementary shapes, the trapezium of each of said lugs (3) widening towards the outside of the part (1) and the trapezium of each of said recesses (4) widening towards the inside of the part (1), and each of said lugs (3) having a width, defined transversely with respect to a right bisector of the corresponding trapezium, which is greater than the width of each of said recesses (4).

IPC Classes  ?

• B32B 3/06 - Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shapeLayered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions for securing layers togetherLayered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shapeLayered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions for attaching the product to another member, e.g. to a support
• B32B 3/12 - Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shapeLayered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. apertured or formed of separate pieces of material characterised by a layer of regularly-arranged cells whether integral or formed individually or by conjunction of separate strips, e.g. honeycomb structure
• B29C 65/00 - Joining of preformed partsApparatus therefor
• F16B 3/00 - Key-type connectionsKeys
• F16B 5/01 - Joining sheets or plates to one another or to strips or bars parallel to them by means of fastening elements specially adapted for honeycomb panels
• F16B 5/07 - Joining sheets or plates to one another or to strips or bars parallel to them by means of multiple interengaging protrusions on the surfaces, e.g. hooks, coils

Abstract

The invention relates to a fluid-transfer device (16), including a rotor comprising two centrifugal wheels (20, 30), and a stator including a set of continuous axisymmetric return channels (50), channelling the fluid from the first wheel to the second wheel (30). Each of the return channels comprises, in series, a diffusing portion (52) which guides the fluid in a centrifugal direction, a bent portion (54) which redirects the flow of fluid in a centripetal direction, a return portion (56) which guides the fluid along a centripetal path, and then an outlet portion (57) formed in a first non-tubular part (62, 162), which guides the fluid towards the second wheel. In said channels, the diffusing portion (52) and the bent portion (54) are separate parts, and the diffusing portion is formed in a second non-tubular part (62, 163) secured to the first non-tubular part. The invention also relates to a method for manufacturing said device.

IPC Classes  ?

• F04D 29/44 - Fluid-guiding means, e.g. diffusers
• F04D 29/62 - MountingAssemblingDisassembling of radial or helico-centrifugal pumps

Abstract

The subject of the invention is an assembly and clamping bolt to be employed under tension, having a shank (10) and a head (101), wherein the head (101), situated at a first end of the shank (10), is provided with a clamping tensioning means with a hydraulic cylinder (11, 102) mounted permanently on the bolt, clamping taking place between a rear shoulder device (21, 22, 23) and the hydraulic cylinder, the rear shoulder device being disposed at a second end of the shank.

IPC Classes  ?

• F16B 31/04 - Screwed connections specially modified in view of tensile loadBreak-bolts for maintaining constant tensile load
• B25B 29/02 - Bolt tensioners

Abstract

The present invention relates to (solid) propellant loads with a mechanically reinforced liners/propellant connection as well as a method for the preparation of said loads. Said loads comprise: - a propellant block, containing energy loads in a cross-linked binder, arranged in a structure having substantially cylindrical shape with a collar, a rear base and a front base; said structure having a thermal protection rigidly connected to the internal face thereof, opposite said block; said cross-linked binder of said propellant block being an energetic binder comprising a cross-linked polymer that is more polar than hydroxyl-terminated polybutadiene (HTPB), and an energetic plasticizer, said non-cross-linked polymer representing at least 14% of the volume of the propellant block; - a connecting layer, based on cross-linked hydroxyl-terminated polybutadiene (HTPB), between said thermal protection and said propellant block; and - mechanical reinforcement means of the connection layer/propellant block connection, present on at least one section of the connection layer/propellant block interface, comprising individual grains, embedded in part in said connection layer with their remaining part in said propellant block: moreover in a pyrotechnically inert material that is non-reactive with respect to the connection layer as well as with respect to the propellant and having a surface energy greater than 34 mJ/m2, advantageously greater than 40 mJ/m2; and moreover the largest dimension of which is between 0.3 and 5.2 mm, advantageously between 1.7 and 3.5 mm.

IPC Classes  ?

• C06B 45/12 - Compositions or products which are defined by structure or arrangement of component or product having contiguous layers or zones
• F02K 9/34 - CasingsCombustion chambersLiners thereof

Abstract

A flame resistant shield includes two opposing walls between which are positioned at least: a first insulating layer, the first layer being capable of distributing heat in the plane formed by the first layer and being insulating across its thickness, a second insulating layer, one of the opposing walls which covers the first layer being produced from a refractory antioxidant material or having at least the surface intended to be exposed to flames covered with a material preventing this surface from being oxidized, the other wall being a support.

IPC Classes  ?

• B32B 7/00 - Layered products characterised by the relation between layers Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties Layered products characterised by the interconnection of layers
• B32B 7/02 - Physical, chemical or physicochemical properties
• F02C 7/25 - Fire protection or prevention
• B64C 7/02 - Nacelles

Abstract

A method and a toolset for manufacturing a metal liner for a composite vessel includes a mandrel configured in several mandrel elements forming support elements of primary parts constituting the metal liner.

IPC Classes  ?

• B23K 9/16 - Arc welding or cutting making use of shielding gas
• B23K 9/00 - Arc welding or cutting
• F17C 1/06 - Protecting sheatings built-up from wound-on bands or filamentary material, e.g. wires

Abstract

An optical system for surveillance systems for space surveillance systems includes at least one telescope with a field greater than or equal to 5° mounted on a mobile mount along two axes, and coupled with an image sensor, whose sensitivity is designed for an integration time of the order of magnitude of a hundred milliseconds.

IPC Classes  ?

• G01C 21/02 - NavigationNavigational instruments not provided for in groups by astronomical means
• G01C 15/00 - Surveying instruments or accessories not provided for in groups
• B64G 3/00 - Observing or tracking cosmonautic vehicles
• G02B 17/00 - Systems with reflecting surfaces, with or without refracting elements
• G02B 23/06 - Telescopes, e.g. binocularsPeriscopesInstruments for viewing the inside of hollow bodiesViewfindersOptical aiming or sighting devices involving prisms or mirrors having a focusing action, e.g. parabolic mirror

Abstract

A support tooling for supporting at least one metal part that is to be subjected to heat treatment or shaped while hot, the tooling including: a stationary support structure presenting a determined shape that corresponds to the general shape of each metal part that is to be supported; first holder elements arranged on one side of each part; second holder elements arranged on the other side of each part; and at least one spring type resilient element placed between the support structure and each first or second holder element so as to hold the part throughout the duration of heat treatment. The support structure, the first and second holder elements and the resilient element(s) are made of thermostructural composite material.

IPC Classes  ?

• F27D 5/00 - Supports, screens or the like for the charge within the furnace
• C21D 9/00 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor
• C21D 1/673 - Quenching devices for die quenching

Abstract

A heat protection material for a surface, made of a mixture comprising a resin, cork granules and refractory fibers, wherein the proportion of cork granules in the mixture is 50 to 80% by mass.

IPC Classes  ?

• C08L 97/00 - Compositions of lignin-containing materials
• B64G 1/58 - Thermal protection, e.g. heat shields
• F16L 59/04 - Arrangements using dry fillers, e.g. using slag wool
• C09K 5/18 - Non-reversible chemical reactions

Abstract

A material for protecting a surface from heat made of a mixture comprising cork granules and resin as a binding agent, which also includes short fibers of heat-resistant material, and phenolic resin or epoxy resin.

IPC Classes  ?

• C09K 3/00 - Materials not provided for elsewhere
• B64G 1/58 - Thermal protection, e.g. heat shields
• C08K 7/06 - Elements
• C08L 63/00 - Compositions of epoxy resinsCompositions of derivatives of epoxy resins
• C08L 97/00 - Compositions of lignin-containing materials
• F16L 59/04 - Arrangements using dry fillers, e.g. using slag wool

Abstract

A device for assembling sections of wind-turbine blades provided with casings, including at least one tie including a first portion and a second portion, the first portion being a portion for assembly with a casing of a first section and the second portion being a portion for mounting with a complementary tie supported by a casing of a second section, wherein the first portion includes at least one composite/metal shear link provided with a continuous fitting element on at least one surface of the casing which receives one end of the aformentioned surface of the casing, provided with attachment pins passing through the fitting and the end of the surface. According to a preferred embodiment, the composite/metal link has at least double shear and is additionally provided with a back-fitting element, the end of the aforementioned surface of the casing being received between the fitting and the back fitting, the attachment pins passing through the fitting, the end of the surface and the back fitting, the link also being provided with a means for attaching the back fitting to the fitting.

IPC Classes  ?

• F03D 1/06 - Rotors

Abstract

A method of making a mechanical multishear link includes sizing the multishear link by breaking down a system comprised by the link into as many subassemblies as there are simple shear interfaces, defining the subassemblies around each shear interface, describing each shear by its stiffness, and applying the mechanical relationships to achieve a system of equations for a computer-assisted resolution by applying the Huth method to each shear interface.

IPC Classes  ?

• G06F 17/50 - Computer-aided design

Abstract

A device for generating impacts on a structure has a projectile head. The head includes a main body on which an impact element is mounted so it projects. The device includes a mechanical propulsion element to set the projectile head in motion, and the propulsion element can move between an initial resting position where the propulsion element is immobile and the projectile head is held against the propulsion element by at least one retaining element, and a second position where after the propulsion element comes to a stop against stop elements, the projectile head moves alone in translation toward the structure guided by guidance elements. The device also includes an anti-rebound system to prevent any rebound by the projectile head after impact on the structure.

IPC Classes  ?

• G01M 7/00 - Vibration-testing of structuresShock-testing of structures
• G01N 3/00 - Investigating strength properties of solid materials by application of mechanical stress
• G01N 33/00 - Investigating or analysing materials by specific methods not covered by groups
• G01P 15/00 - Measuring accelerationMeasuring decelerationMeasuring shock, i.e. sudden change of acceleration

Abstract

An afterbody device for a spacecraft fitted with at least one rocket engine at the rear of the craft includes at least one movable cover element designed to take a first position, masking and reducing the vehicle's rear drag, where it prolongs the vehicle's fuselage around at least one part of a rocket engine nozzle of the vehicle and extends beyond the rear of the vehicle's fuselage, and to take a second position fully deployed, increasing the vehicle's aerodynamic drag.

IPC Classes  ?

• F42B 10/00 - Means for influencing, e.g. improving, the aerodynamic properties of projectiles or missilesArrangements on projectiles or missiles for stabilising, steering, range-reducing, range-increasing or fall-retarding

Abstract

A deployable wing structure for air-braking a satellite and which, once deployed, includes at least one wing structure element that forms a three-dimensional structure and includes at least two panels lying in secant planes and forming a dihedron.

IPC Classes  ?

• B64G 1/24 - Guiding or controlling apparatus, e.g. for attitude control

Abstract

a) of the tube, each petal (25) being applied to a series of superimposed folds (21 to 24) of the folded part of the tube.

IPC Classes  ?

• B64G 1/00 - Cosmonautic vehicles

Goods & Services

Matériau composite céramique à structure en nid d'abeille, destiné à l'industrie aéronautique et spatiale. Matériau composite thermoisolant à structure en nid d'abeille, destiné à l'industrie aéronautique et spatiale.