FR3120732B1 - Procédé de fabrication d’une structure d’absorption acoustique, structure d’absorption acoustique ainsi obtenue - Google Patents

Procédé de fabrication d’une structure d’absorption acoustique, structure d’absorption acoustique ainsi obtenue Download PDF

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Publication number
FR3120732B1
FR3120732B1 FR2102317A FR2102317A FR3120732B1 FR 3120732 B1 FR3120732 B1 FR 3120732B1 FR 2102317 A FR2102317 A FR 2102317A FR 2102317 A FR2102317 A FR 2102317A FR 3120732 B1 FR3120732 B1 FR 3120732B1
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FR
France
Prior art keywords
sound absorption
absorption structure
manufacturing
radial tabs
acoustic
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.)
Active
Application number
FR2102317A
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English (en)
Other versions
FR3120732A1 (fr
Inventor
Florian Ravise
Théo Riccobene
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Airbus Operations SAS
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Airbus Operations SAS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Airbus Operations SAS filed Critical Airbus Operations SAS
Priority to FR2102317A priority Critical patent/FR3120732B1/fr
Priority to US17/685,594 priority patent/US20220293077A1/en
Publication of FR3120732A1 publication Critical patent/FR3120732A1/fr
Application granted granted Critical
Publication of FR3120732B1 publication Critical patent/FR3120732B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/172—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using resonance effects
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/162—Selection of materials
    • G10K11/168—Plural layers of different materials, e.g. sandwiches
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
    • B32B3/10—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
    • B32B3/12—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by a layer of regularly- arranged cells, e.g. a honeycomb structure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
    • F02C7/04—Air intakes for gas-turbine plants or jet-propulsion plants
    • F02C7/045—Air intakes for gas-turbine plants or jet-propulsion plants having provisions for noise suppression
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02K—JET-PROPULSION PLANTS
    • F02K1/00—Plants characterised by the form or arrangement of the jet pipe or nozzle; Jet pipes or nozzles peculiar thereto
    • F02K1/78—Other construction of jet pipes
    • F02K1/82—Jet pipe walls, e.g. liners
    • F02K1/827—Sound absorbing structures or liners
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/10—Properties of the layers or laminate having particular acoustical properties
    • B32B2307/102—Insulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/416—Reflective
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2605/00—Vehicles
    • B32B2605/18—Aircraft
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C7/00—Structures or fairings not otherwise provided for
    • B64C7/02—Nacelles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
    • F02C7/24—Heat or noise insulation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2250/00—Geometry
    • F05D2250/20—Three-dimensional
    • F05D2250/28—Three-dimensional patterned
    • F05D2250/283—Three-dimensional patterned honeycomb
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2260/00—Function
    • F05D2260/96—Preventing, counteracting or reducing vibration or noise
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2260/00—Function
    • F05D2260/96—Preventing, counteracting or reducing vibration or noise
    • F05D2260/963—Preventing, counteracting or reducing vibration or noise by Helmholtz resonators

Abstract

Procédé de fabrication d’une structure d’absorption acoustique, structure d’absorption acoustique ainsi obtenue L'invention a pour objet un procédé de fabrication d’une structure d’absorption acoustique (26) comprenant une pluralité d’éléments acoustiques (34), chacun d’eux étant positionné dans l’une des alvéoles (36) d’un panneau alvéolaire (30). Le procédé comprend une étape de fabrication d’éléments acoustiques (34) pourvus d’au moins deux languettes radiales (50, 52), une étape de fabrication d’un panneau alvéolaire (30) pourvu de lumières (54, 56) configurées pour loger les languettes radiales (50, 52) de chaque élément acoustique (34), une étape d’insertion en force de chaque élément acoustique (34) dans une des alvéoles (36) du panneau alvéolaire (30) jusqu’à ce que les languettes radiales (50, 52) se logent dans les lumières (54, 56). L’invention a également pour objet une structure d’absorption acoustique obtenue à partir de ce procédé. Ce procédé de fabrication permet de pouvoir robotiser la mise en place des éléments acoustiques dans le panneau alvéolaire tout en limitant la masse embarquée. Figure 7
FR2102317A 2021-03-10 2021-03-10 Procédé de fabrication d’une structure d’absorption acoustique, structure d’absorption acoustique ainsi obtenue Active FR3120732B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR2102317A FR3120732B1 (fr) 2021-03-10 2021-03-10 Procédé de fabrication d’une structure d’absorption acoustique, structure d’absorption acoustique ainsi obtenue
US17/685,594 US20220293077A1 (en) 2021-03-10 2022-03-03 Method for manufacturing an acoustic absorption structure, and acoustic absorption structure obtained in this way

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR2102317 2021-03-10
FR2102317A FR3120732B1 (fr) 2021-03-10 2021-03-10 Procédé de fabrication d’une structure d’absorption acoustique, structure d’absorption acoustique ainsi obtenue

Publications (2)

Publication Number Publication Date
FR3120732A1 FR3120732A1 (fr) 2022-09-16
FR3120732B1 true FR3120732B1 (fr) 2023-10-27

Family

ID=75954013

Family Applications (1)

Application Number Title Priority Date Filing Date
FR2102317A Active FR3120732B1 (fr) 2021-03-10 2021-03-10 Procédé de fabrication d’une structure d’absorption acoustique, structure d’absorption acoustique ainsi obtenue

Country Status (2)

Country Link
US (1) US20220293077A1 (fr)
FR (1) FR3120732B1 (fr)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2261872B1 (fr) * 1974-02-26 1976-06-25 Snecma
FR2781719B1 (fr) * 1998-07-30 2000-09-08 Hispano Suiza Sa Structure de nid d'abeille, notamment pour absorption du son, et son procede de fabrication
FR2815900B1 (fr) * 2000-10-31 2003-07-18 Eads Airbus Sa Panneau sandwich reducteur de bruit, notamment pour turboreacteur d'aeronef
US8047329B1 (en) * 2010-08-13 2011-11-01 Rohr, Inc. System and method for noise suppression
US8997923B2 (en) * 2013-08-12 2015-04-07 Hexcel Corporation Sound wave guide for use in acoustic structures
FR3026122B1 (fr) * 2014-09-24 2019-08-09 Safran Aircraft Engines Panneau de traitement acoustique
EP3500427B1 (fr) * 2016-08-19 2021-02-03 3M Innovative Properties Company Panneaux absorbant les sons comprenant une partie centrale constituée de cellules reliées, certaines des parois de cellule comportant des ouvertures
FR3082987B1 (fr) * 2018-06-25 2020-09-18 Airbus Operations Sas Structure constituant un isolant acoustique
FR3090471A1 (fr) 2018-12-24 2020-06-26 Airbus Operations (S.A.S.) Procédé de fabrication d’une structure d’absorption acoustique comprenant un panneau alvéolaire intégrant des éléments acoustiques et structure d’absorption acoustique obtenue à partir dudit procédé

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Publication number Publication date
FR3120732A1 (fr) 2022-09-16
US20220293077A1 (en) 2022-09-15

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