BR112018072353A2 - estruturas acústicas escalonadas com múltiplos graus de liberdade - Google Patents

estruturas acústicas escalonadas com múltiplos graus de liberdade

Info

Publication number
BR112018072353A2
BR112018072353A2 BR112018072353-3A BR112018072353A BR112018072353A2 BR 112018072353 A2 BR112018072353 A2 BR 112018072353A2 BR 112018072353 A BR112018072353 A BR 112018072353A BR 112018072353 A2 BR112018072353 A2 BR 112018072353A2
Authority
BR
Brazil
Prior art keywords
acoustic
septum
freedom
multiple degrees
capsules
Prior art date
Application number
BR112018072353-3A
Other languages
English (en)
Inventor
Ichihashi Fumitaka
Original Assignee
Hexcel Corporation
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 Hexcel Corporation filed Critical Hexcel Corporation
Publication of BR112018072353A2 publication Critical patent/BR112018072353A2/pt

Links

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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D33/00—Arrangements in aircraft of power plant parts or auxiliaries not otherwise provided for
    • B64D33/02—Arrangements in aircraft of power plant parts or auxiliaries not otherwise provided for of combustion air intakes
    • 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
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D33/00—Arrangements in aircraft of power plant parts or auxiliaries not otherwise provided for
    • B64D33/02—Arrangements in aircraft of power plant parts or auxiliaries not otherwise provided for of combustion air intakes
    • B64D2033/0206—Arrangements in aircraft of power plant parts or auxiliaries not otherwise provided for of combustion air intakes comprising noise reduction means, e.g. acoustic liners
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T50/00—Aeronautics or air transport
    • Y02T50/60—Efficient propulsion technologies, e.g. for aircraft

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Fluid Mechanics (AREA)
  • Transducers For Ultrasonic Waves (AREA)

Abstract

uma estrutura acústica escalonada incorporando múmtiplos graus de liberdade acústica para a redução do ruído gerado a partir de uma fonte. as cápsulas de septo acústico são ancoradas junto a mesma profundidade no interior das células da estrutura acústica escalonada. os múltiplos graus de liberdade acústica que vem a ser, em geral, proporcionados por meio da localização das porções de septo diante de diferentes profundidades no interior das células são obtidos pela disposição de conjuntos no interior das células, o que reduzirá a área de seção transversal da célula. as porções de controle de profundidade são inclusas, opcionalmente, nas cápsulas de septo de modo que as porções de septo de diferenciadas cápsulas de septo venham a se localizar em diferenciadas profundidades no interior da estrutura acústica escalonadas. diversas combinações de conjuntos e porções de controle de profundidade são empregadas para proporcionarem com uma estrutura acústica incorporando múltiplos graus de liberdade, muito embora as cápsulas de septo acústico sejam ancoradas dentro da mesma profundidade no interior da estrutura.
BR112018072353-3A 2016-05-02 2017-04-28 estruturas acústicas escalonadas com múltiplos graus de liberdade BR112018072353A2 (pt)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US15/144,355 US9620102B1 (en) 2016-05-02 2016-05-02 Stepped acoustic structures with multiple degrees of freedom
US15/144.355 2016-05-02
PCT/US2017/029989 WO2017192362A1 (en) 2016-05-02 2017-04-28 Stepped acoustic structures with multiple degrees of freedom

Publications (1)

Publication Number Publication Date
BR112018072353A2 true BR112018072353A2 (pt) 2019-02-19

Family

ID=58461774

Family Applications (1)

Application Number Title Priority Date Filing Date
BR112018072353-3A BR112018072353A2 (pt) 2016-05-02 2017-04-28 estruturas acústicas escalonadas com múltiplos graus de liberdade

Country Status (8)

Country Link
US (1) US9620102B1 (pt)
EP (1) EP3539122B1 (pt)
JP (1) JP6893521B2 (pt)
CN (1) CN109074796B (pt)
BR (1) BR112018072353A2 (pt)
CA (1) CA3017834C (pt)
RU (1) RU2707658C1 (pt)
WO (1) WO2017192362A1 (pt)

Cited By (1)

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RU2767483C1 (ru) * 2021-05-14 2022-03-17 Акционерное общество "Объединенная двигателестроительная корпорация" (АО "ОДК") Звукопоглощающая конструкция для авиационного двигателя

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US10032445B1 (en) * 2016-12-13 2018-07-24 Northrop Grumman Systems Corporation Honeycomb unit cell acoustic metamaterial with in situ buttresses for tuned acoustic frequency attenuation
US10369763B2 (en) * 2017-04-19 2019-08-06 The Boeing Company Segmented acoustic insert
US10577117B2 (en) * 2017-08-04 2020-03-03 Hexcel Corporation Angled acoustic honeycomb
FR3079812A1 (fr) * 2018-04-10 2019-10-11 Airbus Operations Panneau d'attenuation acoustique pour aeronef presentant des proprietes d'absorption acoustique combinees.
US11398214B2 (en) * 2018-12-14 2022-07-26 Rohr, Inc. Forming a structured panel with one or more structural reinforcements
FR3101723B1 (fr) * 2019-10-08 2022-07-22 Safran Nacelles Panneau d’atténuation acoustique pour onde basses fréquences
US11339720B2 (en) * 2020-02-21 2022-05-24 Raytheon Technologies Corporation Acoustic liner with non-uniform volumetric distribution
FR3111002B1 (fr) * 2020-05-29 2022-06-17 Airbus Operations Sas Procédé de fabrication d'une structure alvéolaire d’insonorisation incluant un diaphragme, et structure alvéolaire d’insonorisation obtenue
RU2747346C1 (ru) * 2020-07-13 2021-05-04 Акционерное общество «ОДК-Авиадвигатель» Автоматизированный способ изготовления сотового заполнителя с мембранными крышками
FR3113169B1 (fr) * 2020-07-31 2022-12-09 Airbus Operations Sas Procédé de fabrication d’un panneau acoustique à peau capsulaire et panneau acoustique intégrant une telle peau

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2767483C1 (ru) * 2021-05-14 2022-03-17 Акционерное общество "Объединенная двигателестроительная корпорация" (АО "ОДК") Звукопоглощающая конструкция для авиационного двигателя

Also Published As

Publication number Publication date
US9620102B1 (en) 2017-04-11
CN109074796B (zh) 2023-06-06
WO2017192362A1 (en) 2017-11-09
RU2707658C1 (ru) 2019-11-28
JP6893521B2 (ja) 2021-06-23
CA3017834C (en) 2019-02-26
JP2019519417A (ja) 2019-07-11
EP3539122B1 (en) 2021-10-13
CA3017834A1 (en) 2017-11-09
CN109074796A (zh) 2018-12-21
EP3539122A1 (en) 2019-09-18

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Legal Events

Date Code Title Description
B350 Update of information on the portal [chapter 15.35 patent gazette]
B06W Patent application suspended after preliminary examination (for patents with searches from other patent authorities) chapter 6.23 patent gazette]
B11B Dismissal acc. art. 36, par 1 of ipl - no reply within 90 days to fullfil the necessary requirements