EP4153407A1 - Structure d'assemblage d'une pièce comprenant une première partie métallique et une deuxième partie en matériau composite à matrice organique - Google Patents
Structure d'assemblage d'une pièce comprenant une première partie métallique et une deuxième partie en matériau composite à matrice organiqueInfo
- Publication number
- EP4153407A1 EP4153407A1 EP21731246.1A EP21731246A EP4153407A1 EP 4153407 A1 EP4153407 A1 EP 4153407A1 EP 21731246 A EP21731246 A EP 21731246A EP 4153407 A1 EP4153407 A1 EP 4153407A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- connection portion
- hole
- fixing element
- blind hole
- side wall
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/74—Joining plastics material to non-plastics material
- B29C66/742—Joining plastics material to non-plastics material to metals or their alloys
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
- B22F5/008—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of engine cylinder parts or of piston parts other than piston rings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
- B22F7/062—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools involving the connection or repairing of preformed parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
- B22F7/08—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools with one or more parts not made from powder
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
- B29C65/562—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits using extra joining elements, i.e. which are not integral with the parts to be joined
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
- B29C65/64—Joining a non-plastics element to a plastics element, e.g. by force
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
- B29C66/122—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
- B29C66/1222—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least a lapped joint-segment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
- B29C66/122—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
- B29C66/1224—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least a butt joint-segment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
- B29C66/21—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being formed by a single dot or dash or by several dots or dashes, i.e. spot joining or spot welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
- B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
- B29C66/721—Fibre-reinforced materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y80/00—Products made by additive manufacturing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K9/00—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof
- F02K9/08—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof using solid propellants
- F02K9/32—Constructional parts; Details not otherwise provided for
- F02K9/34—Casings; Combustion chambers; Liners thereof
- F02K9/346—Liners, e.g. inhibitors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K9/00—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof
- F02K9/42—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof using liquid or gaseous propellants
- F02K9/60—Constructional parts; Details not otherwise provided for
- F02K9/62—Combustion or thrust chambers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/20—Direct sintering or melting
- B22F10/25—Direct deposition of metal particles, e.g. direct metal deposition [DMD] or laser engineered net shaping [LENS]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/18—Dissimilar materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/7394—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoset
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/748—Machines or parts thereof not otherwise provided for
- B29L2031/749—Motors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Definitions
- One-piece assembly structure comprising a first metal part and a second part made of composite material with an organic matrix
- This disclosure relates to a part comprising a metal part and a part of composite material with an organic matrix assembled together.
- a part can be a rocket engine combustion chamber casing, but not exclusively.
- Parts comprising a metal part and a part made of a composite material with an organic matrix assembled together.
- the assembly of these two parts can very often be improved. There is therefore a need in this direction.
- One embodiment relates to a part comprising a first metal part and a second part made of composite material with an organic matrix, in which the first part has a first connection portion and the second part has a second connection portion, the second connection portion having at least one through hole, the second connection portion being sandwiched in whole or in part between the first connection portion and a metal fixing element, the fixing element being fixed to the first part on the one hand on the first connection portion via the through hole of the second connection portion and on the other hand on a portion other than the first connection portion, whereby the first part and the second part are fixed to each other. other.
- connection portion of one part is the portion which is in contact and cooperates directly with the other part.
- a portion of a part which does not cooperate with the other part for example which is not superimposed with, or does not overlap, the connection portion of the other part, does not form part of the connection portion of said part.
- connection portion has one or more through holes.
- the through hole is meant “the at least one through hole”.
- the fastening element is in a metal shade identical to that of the first part, but not necessarily.
- the fixing element is fixed to the first part by enclosing at least part of the second connection portion.
- the second connection portion is blocked between the first connection portion and the fixing element.
- the fastener is attached to the first part in two places.
- the fastener is attached to the first part, and more particularly to the first connector portion, extending through the through hole of the second connector portion.
- the fastener is further attached directly to the first part on a portion other than the first connection portion. So there are two mechanical connections between the fastener and the first part. This assembles the first part with the second part.
- the parts can be plates, flat or curved, and the fixing portions form flanges, flat or curved.
- the first part and the second part each form a plate extending in a first direction and in a second direction, and having a thickness in a third direction perpendicular to the first and to the second direction, the first part and the second part being arranged side by side in the first direction, the at least one through-hole extending in the third direction, the first and the second connection portion overlapping each other in the first and the second direction.
- second direction, the fixing element and the first connection portion being arranged on either side of the second connection portion in the third direction.
- the first and / or the second direction can be rectilinear or curved, similar to the directions defined in a Cartesian, cylindrical or spherical coordinate system.
- the first connection portion has at least one blind hole extending respectively in the extension of at least one through hole of the second connection portion, the fixing element being fixed to the first connection portion extending into the blind hole.
- the blind hole extends in the third direction.
- a blind hole is a hole which has only one hole and which forms a concavity.
- the fixing element is engaged with the first part, and more precisely with the first connection portion, in the blind hole. This reinforces the mechanical link between the fixing element and the first part, in particular in shear (ie direction transverse to the geometric axis of the blind hole), but also in tension (ie in a direction parallel to the geometric axis of the blind hole ), by presenting a larger grip surface.
- the blind hole has an entrance, a bottom, a side wall extending between the entrance and the bottom and a geometric axis, the side wall of the blind hole being inclined relative to the geometric axis of the through hole so as to form a convergent from the entrance to the bottom.
- the side wall of the blind hole has at least one portion inclined relative to the geometric axis of the blind hole, and oriented so as to be facing the fixing element.
- the through hole has a side wall and a geometric axis, the side wall of the through hole being inclined relative to the geometric axis of the through hole so as to form a convergent from the element of attachment to the first connection portion.
- the geometric axis of the through hole is coaxial with the geometric axis of the blind hole. It is also understood that the side wall of the through-hole has at least one portion inclined relative to the geometric axis of the through-hole, and oriented so as to face the fixing element. For example, the side wall of the blind hole extends as an extension of the side wall of the through hole.
- the first connection portion comprises a shoulder configured to cooperate with the second connection portion.
- the shoulder provides an additional surface for cooperation between the first and the second part, and reinforces the strength of the assembly.
- the first portion forms a step defining a shoulder.
- the shoulder extends in the second and third direction.
- the fastener is formed by additive manufacturing by deposition by spraying metal powder entrained by a cold gas, also known by the acronym CGS for "Cold Gas Spraying" in English. It is understood that additive manufacturing by deposition by spraying metal powder entrained by a cold gas is an additive manufacturing method where the metal is deposited at a temperature below its melting point. Such a deposition method is particularly suitable for the part because it is ensured that the temperature of the metal during the deposition remains below the deterioration temperature of the composite material with an organic matrix of the second part.
- Such a fastening element is particularly easy to manufacture, makes it possible to dispense with the welding or bolting steps of the prior art, and thus has a relatively small mass.
- a protective layer is disposed between the fastening element and the second connection portion.
- Such a protective layer makes it possible to protect the second connection portion, for example when the fixing element is formed by depositing by spraying metal powder entrained by a cold gas. This ensures the mechanical integrity of the second connection portion, and therefore ensures the mechanical strength of the assembly.
- the protective layer can extend over the entire interface between the second part and the fastener.
- the part has a general shape with symmetry of revolution.
- the assembly structure according to the present disclosure is particularly well suited to annular parts.
- the part forms a rocket engine combustion chamber envelope.
- the assembly structure according to the present disclosure is particularly well suited for a rocket engine combustion chamber shell.
- One embodiment also relates to a rocket engine comprising a part according to any one of the embodiments described in the present description, and in particular a combustion chamber casing according to any one of the embodiments described in this presentation.
- Figure 1 shows a rocket engine
- Figure 2 shows the envelope of the combustion chamber of the rocket engine of Figure 1
- FIG. 3 represents the assembly structure between a metallic part and a part made of composite material with an organic matrix of the envelope of the combustion chamber of FIG. 2.
- FIG. 1 represents a rocket engine 100 comprising a combustion chamber casing 10 opening onto an ejection nozzle 20.
- FIG. 2 represents the combustion chamber casing 10, comprising a first metal part 12, a second metal part. composite material with an organic matrix 14 and a plurality of fixing elements 16 for fixing the first part 12 with the second part 14.
- the combustion chamber casing 10 and a part having a general shape with symmetry of revolution of axis X, the first part 12 and the second part 14 each having substantially the general shape of annular plates.
- the axial direction corresponds to the direction of the geometric axis X of the part 10
- a radial direction R is a direction perpendicular to the axis X.
- the azimuthal or circumferential direction C corresponds to the direction describing a ring around the axial direction X.
- the three directions axial, radial and azimuthal correspond respectively to the directions defined by the coast, the radius and the angle in a cylindrical coordinate system.
- the first and second parts 12 and 14 form plates extending in a first direction DA (in this example the first direction is inclined relative to the axial direction X) and in a second direction DB (in this example the second direction DB being parallel to the circumferential direction C), and have a thickness in a third direction DC, perpendicular to the first and to the second direction DA and DB.
- the DA, DB and DC coordinate system forms a local coordinate system in the X, C, R coordinate system.
- the first part 12 is made of a metal alloy, for example a nickel-based alloy
- the second part 14 is made of a composite material with an organic matrix, for example of the thermoplastic or thermosetting type
- the fixing elements 16 are made of a steel-type or nickel-based metal alloy.
- the plurality of fixing elements 16 is replaced by a single annular flange.
- Figure 3 shows a sectional view along the plane III of Figure 2 of the assembly structure of the first part 12 with the second part 14 using a fixing element 16.
- the first part 12 comprises a first connection portion 12A having a blind hole 12B and a shoulder 12C.
- the blind hole 12B has a geometric axis Atb which extends in the third direction DC between an inlet 12B1 and a bottom 12B2, and has a side wall 12B3 extending between the inlet 12B1 and the bottom 12B2.
- the blind hole 12B is of frustoconical shape, the side wall 12B3 being uniformly inclined with respect to the axis Atb, forming a convergent from the inlet 12B1 towards the bottom 12B2.
- the shoulder 12C extends transversely to the first direction DA.
- the shoulder 12C extends in the second direction DB and the third direction DC.
- the first connection portion 12A thus forms a step receiving a second connection portion 14A described below from the second part 14, the second part 14 cooperating in abutment in the axial direction X (and in the first direction DA) with the shoulder 12C.
- the first part 12 and the second part 14 are arranged side by side in the first direction DA.
- the second part 14 has a second connection portion 14A having a through hole 14B.
- the through hole 14B has a geometric axis Att, coincident with the geometric axis Atb of the blind hole 12B, which extends in the third direction DC, and has a side wall 14B3.
- the through hole 14B is frustoconical in shape, the side wall 14B3 being uniformly inclined with respect to the axis Att, forming a convergent from the fixing element 16 towards the first connection portion 12A.
- the second connection portion 14A has two or more through holes, and the first connection portion 12A comprises as many blind holes, or less.
- a protective layer 18 is disposed between the fastening element 16 and the second portion of connector 14A. More particularly in this example, the protective layer 18 extends over the entire interface of the second part 14 with the fastener 16. In other words, in this example the protective layer 18 extends not only on the side wall 14B3 of the through hole 14B but also on the walls of the second part 14 facing the fixing element 16.
- this protective layer 18 is formed by a metal foil, or by a metal deposit of the additive manufacturing type by metal arc-wire deposit or "metal arc wire" in English.
- the protective layer 18 is joined to the bottom 12B2 of the blind hole 12B, and this in a sealed manner, for example with a copper gasket.
- the fastener 16 and formed by additive manufacturing by deposition by spraying metal powder entrained by a cold gas.
- the protective layer 18 being fixed in a sealed manner on the bottom 12B2, this makes it possible to avoid any material leakage during the projection of material for the formation of the fixing element 16, which improves the quality and the fixing and therefore its mechanical strength.
- the fixing element 16 encloses, with the first part 12, a portion of the second connection portion 14A, in the first direction DA.
- the fixing element 16 is fixed to the first connection portion 12A, in the blind hole 12B extending through the through hole 14B of the second connector portion 14A.
- the fixing element 16 is also fixed to the first part 12 on a separate portion of the first connector portion 12A, in this example a portion 12D adjacent to the first connector portion 12A.
- the fixing element 16 forms a fixing "bridge" between the first connection portion 12A and the adjacent portion 12D, by sandwiching, with the first part 12, a part of the second portion of the connection. 14A connection.
- the Si 2D contact surface between the portion 12D and the first part 12 is greater than or equal to the surface S 12 B2 of the bottom 12B2 of the blind hole 12B (ie S-
- Such a fastening element 16 fixed to two portions of the first part 12 makes it possible to block the clamped part of the second connection portion 14A and to stiffen the assembly, which in particular reduces the bending deformations F (around the circumferential direction C) of the assembly.
- the fixing points are therefore less stressed and their mechanical strength is reinforced.
- the bending deformations around the axial direction X of the assembly are also reduced.
- the fixing of the fixing element 16 on two portions of the first part 12 makes it possible to better distribute the shear forces (ie forces oriented transversely to the radial direction R or in the plane defined by the axial directions X and circumferential C). Finally, the resistance to tearing, in the radial direction R is also improved.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Connection Of Plates (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2005270A FR3110483B1 (fr) | 2020-05-20 | 2020-05-20 | Structure d’assemblage d’une pièce comprenant une première partie métallique et une deuxième partie en matériau composite à matrice organique |
| PCT/FR2021/050811 WO2021234244A1 (fr) | 2020-05-20 | 2021-05-11 | Structure d'assemblage d'une pièce comprenant une première partie métallique et une deuxième partie en matériau composite à matrice organique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4153407A1 true EP4153407A1 (fr) | 2023-03-29 |
Family
ID=72885622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21731246.1A Pending EP4153407A1 (fr) | 2020-05-20 | 2021-05-11 | Structure d'assemblage d'une pièce comprenant une première partie métallique et une deuxième partie en matériau composite à matrice organique |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US11904387B2 (fr) |
| EP (1) | EP4153407A1 (fr) |
| JP (1) | JP7901026B2 (fr) |
| FR (1) | FR3110483B1 (fr) |
| WO (1) | WO2021234244A1 (fr) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3110483B1 (fr) * | 2020-05-20 | 2022-06-03 | Arianegroup Sas | Structure d’assemblage d’une pièce comprenant une première partie métallique et une deuxième partie en matériau composite à matrice organique |
| FR3110484B1 (fr) * | 2020-05-20 | 2022-06-03 | Arianegroup Sas | Procédé d’assemblage d’une première partie métallique avec une deuxième partie en matériau composite à matrice organique, et pièce résultant d’un tel assemblage |
Family Cites Families (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0747280Y2 (ja) * | 1988-03-18 | 1995-11-01 | 日産自動車株式会社 | ロケットのサーマルカーテン |
| US5160392A (en) * | 1991-08-06 | 1992-11-03 | The United States Of America As Represented By The Secretary Of The Army | Method for joining tubular filament wound composites to other bodies |
| FR2722249B1 (fr) * | 1994-07-08 | 1996-10-04 | Europ Propulsion | Chambre de combustion de propulseur avec liaison etanche entre structure tubulaire composite et fond |
| US5755401A (en) * | 1995-10-31 | 1998-05-26 | Thiokol Corporation | Missile diverter integration method and system |
| US5669812A (en) * | 1996-02-21 | 1997-09-23 | Braden Manufacturing | Exhaust gas diffuser interface |
| JPH11123765A (ja) * | 1997-10-22 | 1999-05-11 | Sakura Rubber Co Ltd | 炭素繊維強化プラスチック構造体の結合構造 |
| JP2000334174A (ja) * | 1999-05-27 | 2000-12-05 | Taiei Shoko Kk | ウオータスライダ並びにその施工方法 |
| AU2002347745A1 (en) * | 2001-12-18 | 2003-06-30 | Volvo Aero Corporation | A component for being subjected to high thermal load during operation and a method for manufacturing such a component |
| DE10237381B4 (de) * | 2002-08-12 | 2005-06-23 | Eads Space Transportation Gmbh | Brennkammerstruktur und Verfahren zu deren Herstellung |
| US20090235636A1 (en) * | 2008-03-21 | 2009-09-24 | Robert Oehrlein | Reinforced, regeneratively cooled uni-body rocket engine |
| US8429916B2 (en) * | 2009-11-23 | 2013-04-30 | Honeywell International Inc. | Dual walled combustors with improved liner seals |
| FR2963063B1 (fr) * | 2010-07-26 | 2015-11-27 | Snecma | Chambre de combustion munie d'un element tubulaire |
| JP5999068B2 (ja) * | 2013-10-30 | 2016-09-28 | トヨタ自動車株式会社 | 締結構造 |
| US9950495B2 (en) * | 2014-07-24 | 2018-04-24 | Nugripmetal S.A.R.L. | System and method for additive manufacturing of a three-dimensional object |
| FR3042542B1 (fr) * | 2015-10-20 | 2017-12-01 | Snecma | Chambre propulsive et procede de fabrication |
| GB2550966A (en) * | 2016-06-03 | 2017-12-06 | The Welding Inst | Joining method using in-situ formed fasteners |
| JP6909242B2 (ja) * | 2016-06-21 | 2021-07-28 | エアロジェット ロケットダイン インコーポレイテッド | 受動的凝縮物冷却を有する液体推進剤ロケットエンジン |
| JP7038279B2 (ja) * | 2016-08-09 | 2022-03-18 | パナソニックIpマネジメント株式会社 | 接合構造およびそのアーク溶接方法 |
| US11028802B2 (en) * | 2016-11-14 | 2021-06-08 | Northrop Grumman Systems Corporation | Liquid rocket engine assemblies and related methods |
| US11333105B1 (en) * | 2018-04-27 | 2022-05-17 | United States Of America As Represented By The Administrator Of Nasa | Thrust chamber liner and fabrication method therefor |
| GB2596703B (en) * | 2019-03-06 | 2023-03-22 | Karsten Mfg Corp | Co-molded golf putter with integral interlocking features |
| DE102019001585A1 (de) * | 2019-03-08 | 2020-09-10 | Ralph Funck | Faserverbundstrebe |
| FR3110484B1 (fr) * | 2020-05-20 | 2022-06-03 | Arianegroup Sas | Procédé d’assemblage d’une première partie métallique avec une deuxième partie en matériau composite à matrice organique, et pièce résultant d’un tel assemblage |
| FR3110483B1 (fr) * | 2020-05-20 | 2022-06-03 | Arianegroup Sas | Structure d’assemblage d’une pièce comprenant une première partie métallique et une deuxième partie en matériau composite à matrice organique |
-
2020
- 2020-05-20 FR FR2005270A patent/FR3110483B1/fr active Active
-
2021
- 2021-05-11 JP JP2022571307A patent/JP7901026B2/ja active Active
- 2021-05-11 US US17/999,343 patent/US11904387B2/en active Active
- 2021-05-11 WO PCT/FR2021/050811 patent/WO2021234244A1/fr not_active Ceased
- 2021-05-11 EP EP21731246.1A patent/EP4153407A1/fr active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| FR3110483B1 (fr) | 2022-06-03 |
| JP2023526532A (ja) | 2023-06-21 |
| US11904387B2 (en) | 2024-02-20 |
| JP7901026B2 (ja) | 2026-08-05 |
| WO2021234244A1 (fr) | 2021-11-25 |
| US20230184199A1 (en) | 2023-06-15 |
| FR3110483A1 (fr) | 2021-11-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2142834B1 (fr) | Dispositif de liaison etanche precontrainte a brides | |
| EP1731839B1 (fr) | Système de fixation d'un système d'injection sur un fond de chambre de combustion de turboréacteur et procède de fixation | |
| FR2699970A1 (fr) | Dispositif de liaison glissante entre deux pièces soumises à de fortes sollicitations mécaniques et thermiques. | |
| CA2623240A1 (fr) | Dispositif pour la fixation d'un panneau leger sur un support | |
| FR2679010A1 (fr) | Chambre de combustion de turbomachine a bols de prevaporisation demontables. | |
| WO2021234244A1 (fr) | Structure d'assemblage d'une pièce comprenant une première partie métallique et une deuxième partie en matériau composite à matrice organique | |
| EP1544481B1 (fr) | Tôle comportant des moyens de fixation à un support et un joint d'étanchéité | |
| EP3778381B1 (fr) | Partie antérieure de nacelle d'un ensemble propulsif d'aéronef dont la lèvre d'entrée d'air est liée au panneau extérieur par emboitement | |
| EP3058210B1 (fr) | Chambre de propulsion pour fusée et procédé de fabrication d'une telle chambre | |
| EP3778382B1 (fr) | Partie antérieure de nacelle d'un ensemble propulsif d'aéronef dont le cadre avant est lié à une paroi extérieure sans la traverser | |
| EP4264063A1 (fr) | Assemblage pour une turbomachine | |
| WO2021234242A1 (fr) | Procede d'assemblage d'une premiere partie metallique avec une deuxieme partie en materiau composite a matrice organique, et piece resultant d'un tel assemblage | |
| WO2011138571A1 (fr) | Ensemble pour système propulsif d'aéronef | |
| EP4148254B1 (fr) | Ensemble pour une nacelle d'aéronef et comportant un panneau support, une protection thermique et un système de fixation | |
| EP0375515A1 (fr) | Dispositif de liaison démontable entre deux pièces soumises à de fortes sollicitations | |
| WO2023131759A1 (fr) | Turbine pour turbomachine | |
| EP4153408A1 (fr) | Structure d'assemblage d'une pièce comprenant une première partie métallique et une deuxième partie en matériau composite à matrice organique | |
| WO2024246452A1 (fr) | Procede de fabrication d'un panneau aerodynamique pour un ensemble propulsif d'aeronef | |
| EP4197918B1 (fr) | Pièce de coin flexible destinée à contribuer à une liaison entre au moins trois parois d' au moins un caisson d' aéronef | |
| EP3620685B1 (fr) | Organe de transmission de puissance | |
| FR3050394A1 (fr) | Porte d'inverseur de poussee pour nacelle de turboreacteur | |
| WO2023166266A1 (fr) | Cône d'éjection pour turbomachine d'aéronef | |
| FR3158769A1 (fr) | Ensemble de fixation comprenant une bielle et un tenon | |
| WO2024156639A1 (fr) | Secteur de virole intérieure pour turbomachine d'aéronef | |
| FR3070428A1 (fr) | Insert pour la fixation d'un composant sur un support de turbomachine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
| 17P | Request for examination filed |
Effective date: 20221208 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
| DAV | Request for validation of the european patent (deleted) | ||
| DAX | Request for extension of the european patent (deleted) | ||
| RIC1 | Information provided on ipc code assigned before grant |
Ipc: B29C 65/64 20060101AFI20260706BHEP Ipc: F02K 9/00 20060101ALN20260706BHEP Ipc: B22F 10/25 20210101ALN20260706BHEP Ipc: B22F 7/08 20060101ALN20260706BHEP Ipc: B33Y 80/00 20150101ALN20260706BHEP Ipc: B29K 105/06 20060101ALN20260706BHEP |
|
| GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
| GRAJ | Information related to disapproval of communication of intention to grant by the applicant or resumption of examination proceedings by the epo deleted |
Free format text: ORIGINAL CODE: EPIDOSDIGR1 |