FR3143169B1 - Ame alveolaire optimisee et panneau d’attenuation acoustique la comprenant pour une turbomachine d’aeronef - Google Patents

Ame alveolaire optimisee et panneau d’attenuation acoustique la comprenant pour une turbomachine d’aeronef Download PDF

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Publication number
FR3143169B1
FR3143169B1 FR2212932A FR2212932A FR3143169B1 FR 3143169 B1 FR3143169 B1 FR 3143169B1 FR 2212932 A FR2212932 A FR 2212932A FR 2212932 A FR2212932 A FR 2212932A FR 3143169 B1 FR3143169 B1 FR 3143169B1
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FR
France
Prior art keywords
main axis
end faces
acoustic attenuation
optimized
attenuation panel
Prior art date
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Active
Application number
FR2212932A
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English (en)
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FR3143169A1 (fr
Inventor
Bertrand Léon Marie Desjoyeaux
Marc Versaevel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Safran Nacelles SAS
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Safran Nacelles 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 Safran Nacelles SAS filed Critical Safran Nacelles SAS
Priority to FR2212932A priority Critical patent/FR3143169B1/fr
Priority to US18/528,974 priority patent/US20240191655A1/en
Publication of FR3143169A1 publication Critical patent/FR3143169A1/fr
Application granted granted Critical
Publication of FR3143169B1 publication Critical patent/FR3143169B1/fr
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Classifications

    • 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
    • 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
    • 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 shape; Layered products comprising a layer 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 shape; Layered products comprising a layer 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 shape; Layered products comprising a layer 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
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D33/00—Arrangement in aircraft of power plant parts or auxiliaries not otherwise provided for
    • B64D33/02—Arrangement in aircraft of power plant parts or auxiliaries not otherwise provided for of combustion air intakes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D33/00—Arrangement in aircraft of power plant parts or auxiliaries not otherwise provided for
    • B64D33/04—Arrangement in aircraft of power plant parts or auxiliaries not otherwise provided for of exhaust outlets or jet pipes
    • B64D33/06—Silencing exhaust or propulsion jets
    • 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
    • B32B2605/00—Vehicles
    • B32B2605/18—Aircraft
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D33/00—Arrangement in aircraft of power plant parts or auxiliaries not otherwise provided for
    • B64D33/02—Arrangement in aircraft of power plant parts or auxiliaries not otherwise provided for of combustion air intakes
    • B64D2033/0206—Arrangement in aircraft of power plant parts or auxiliaries not otherwise provided for of combustion air intakes comprising noise reduction means, e.g. acoustic liners
    • 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
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/60—Properties or characteristics given to material by treatment or manufacturing
    • F05D2300/603—Composites; e.g. fibre-reinforced
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Laminated Bodies (AREA)

Abstract

L’invention concerne une âme (34) pour panneau d’atténuation acoustique s’étendant entre une première et une seconde face d’extrémités, ladite âme comportant une pluralité de cellules (36) polygonales tubulaires ayant un axe principal (A) d’extension entre les faces d’extrémité, chaque cellule comportant une cavité interne (39) délimitée par des parois latérales (40) s’étendant entre les première et deuxième faces d’extrémité et débouchant dans chacune des deux faces d’extrémité, les cellules étant expansibles suivant une direction parallèle aux faces d’extrémités, chaque cellule polygonale comportant des septums (45, 46) s’étendant transversalement par rapport à l'axe principal et étant décalés suivant celui-ci,caractérisé en ce que chaque septum (45, 46) est replié en forme de W au moins entre une des parois latérales (40) et une autre des parois latérales et présente un orifice traversant, les orifices de deux septums consécutifs étant décalés radialement par rapport à l’axe principal pour former une chicane. Figure pour l'abrégé : Figure 3
FR2212932A 2022-12-07 2022-12-07 Ame alveolaire optimisee et panneau d’attenuation acoustique la comprenant pour une turbomachine d’aeronef Active FR3143169B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR2212932A FR3143169B1 (fr) 2022-12-07 2022-12-07 Ame alveolaire optimisee et panneau d’attenuation acoustique la comprenant pour une turbomachine d’aeronef
US18/528,974 US20240191655A1 (en) 2022-12-07 2023-12-05 Optimised honeycomb core and acoustic attenuation panel comprising it for an aircraft turbomachine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR2212932A FR3143169B1 (fr) 2022-12-07 2022-12-07 Ame alveolaire optimisee et panneau d’attenuation acoustique la comprenant pour une turbomachine d’aeronef
FR2212932 2022-12-07

Publications (2)

Publication Number Publication Date
FR3143169A1 FR3143169A1 (fr) 2024-06-14
FR3143169B1 true FR3143169B1 (fr) 2025-02-21

Family

ID=85462018

Family Applications (1)

Application Number Title Priority Date Filing Date
FR2212932A Active FR3143169B1 (fr) 2022-12-07 2022-12-07 Ame alveolaire optimisee et panneau d’attenuation acoustique la comprenant pour une turbomachine d’aeronef

Country Status (2)

Country Link
US (1) US20240191655A1 (fr)
FR (1) FR3143169B1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20250214712A1 (en) * 2023-12-27 2025-07-03 Rohr, Inc. Acoustic panel for an aircraft propulsion system
US20250214713A1 (en) * 2023-12-27 2025-07-03 Rohr, Inc. Acoustic panel for an aircraft propulsion system

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US5997985A (en) * 1998-09-10 1999-12-07 Northrop Grumman Corporation Method of forming acoustic attenuation chambers using laser processing of multi-layered polymer films
US8413761B2 (en) * 2005-04-04 2013-04-09 Hexcel Corporation Acoustic honeycomb with perforated septum caps
US8651233B2 (en) * 2012-05-08 2014-02-18 Hexcel Corporation Acoustic structure with increased bandwidth suppression
US9476359B2 (en) * 2014-04-11 2016-10-25 Rohr, Inc. Acoustic liner
US9752595B2 (en) * 2015-11-03 2017-09-05 Rohr, Inc. Nacelle core with insert
US10332501B2 (en) * 2017-02-01 2019-06-25 General Electric Company Continuous degree of freedom acoustic cores
FR3070529B1 (fr) * 2017-08-31 2019-12-20 Safran Nacelles Panneau acoustique a resonateurs pour volume reduit
FR3070674B1 (fr) * 2017-09-06 2019-09-13 Safran Nacelles Integration a la levre acoustique degivree
US11286957B2 (en) * 2018-07-02 2022-03-29 Rohr, Inc. Method for inserting septum into acoustic liner
US11359577B2 (en) * 2018-08-22 2022-06-14 Rohr, Inc. Multi-degree of freedom acoustic panel
FR3120732B1 (fr) * 2021-03-10 2023-10-27 Airbus Operations Sas Procédé de fabrication d’une structure d’absorption acoustique, structure d’absorption acoustique ainsi obtenue

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Publication number Publication date
US20240191655A1 (en) 2024-06-13
FR3143169A1 (fr) 2024-06-14

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