MA37671B1 - Structure avec ouvertures acoustiques actives - Google Patents

Structure avec ouvertures acoustiques actives

Info

Publication number
MA37671B1
MA37671B1 MA37671A MA37671A MA37671B1 MA 37671 B1 MA37671 B1 MA 37671B1 MA 37671 A MA37671 A MA 37671A MA 37671 A MA37671 A MA 37671A MA 37671 B1 MA37671 B1 MA 37671B1
Authority
MA
Morocco
Prior art keywords
septum
acoustic
velocity
response
changes
Prior art date
Application number
MA37671A
Other languages
English (en)
Other versions
MA37671A1 (fr
Inventor
Fumitaka Ichihashi
Original Assignee
Hexcel Corp
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 Corp filed Critical Hexcel Corp
Publication of MA37671A1 publication Critical patent/MA37671A1/fr
Publication of MA37671B1 publication Critical patent/MA37671B1/fr

Links

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
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4957—Sound device making

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Headphones And Earphones (AREA)

Abstract

L'invention concerne une structure acoustique qui comprend un septum ayant une ouverture acoustique, qui définit une zone ouverte qui varie en réponse à des changements de la vitesse de milieux contenant du bruit passant dans l'ouverture acoustique. Le septum comprend une partie fixe et une ou plusieurs parties volets mobiles, la partie fixe et/ou la ou les parties volets comprenant des surfaces qui définissent une ouverture acoustique à travers le septum. L'ouverture acoustique présente une zone ouverte qui varie en raison du mouvement du ou des volets mobiles en réponse aux changements de vitesse des milieux contenant du bruit qui passent à travers l'ouverture acoustique. Le septum résultant présente un facteur de non linéarité (nlf) relativement faible.
MA37671A 2012-06-26 2014-12-19 Structure avec ouvertures acoustiques actives MA37671B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US13/533,668 US8800714B2 (en) 2012-06-26 2012-06-26 Structure with active acoustic openings
PCT/US2013/046591 WO2014004215A1 (fr) 2012-06-26 2013-06-19 Structure avec ouvertures acoustiques actives

Publications (2)

Publication Number Publication Date
MA37671A1 MA37671A1 (fr) 2016-01-29
MA37671B1 true MA37671B1 (fr) 2016-10-31

Family

ID=48748520

Family Applications (1)

Application Number Title Priority Date Filing Date
MA37671A MA37671B1 (fr) 2012-06-26 2014-12-19 Structure avec ouvertures acoustiques actives

Country Status (12)

Country Link
US (1) US8800714B2 (fr)
EP (1) EP2864979B1 (fr)
JP (1) JP6284526B2 (fr)
KR (1) KR102044680B1 (fr)
CN (1) CN104364840B (fr)
BR (1) BR112014032248A2 (fr)
CA (1) CA2873117C (fr)
ES (1) ES2753997T3 (fr)
MA (1) MA37671B1 (fr)
MY (1) MY167288A (fr)
RU (1) RU2632252C2 (fr)
WO (1) WO2014004215A1 (fr)

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US10336433B2 (en) 2015-03-09 2019-07-02 The Boeing Company Fused porogen process for acoustic septa fabrication
CN107438881B (zh) * 2015-04-10 2021-12-14 Mra系统有限责任公司 声衬和建构声衬的方法
US9469985B1 (en) 2015-05-11 2016-10-18 Hexcel Corporation Acoustic structures with multiple degrees of freedom
TWI625446B (zh) * 2015-06-18 2018-06-01 德克薩斯大學體系董事會 用於抑制來自液體中的源的聲能的共振器、共振器陣列和雜訊消減系統
DE102016203211A1 (de) * 2016-02-29 2017-08-31 Airbus Operations Gmbh Schalldämpfendes Luftführungsteil
US9620102B1 (en) * 2016-05-02 2017-04-11 Hexcel Corporation Stepped acoustic structures with multiple degrees of freedom
US9741331B1 (en) 2016-06-01 2017-08-22 The Boeing Company Sound-attenuating composite structure
FR3065570B1 (fr) * 2017-04-21 2019-05-03 Office National D'etudes Et De Recherches Aerospatiales Garniture surfacique pour absorption acoustique
US10626799B2 (en) * 2017-07-19 2020-04-21 Hexcel Corporation Flexible acoustic honeycomb
FR3070438B1 (fr) * 2017-08-25 2020-09-11 Safran Nacelles Structure alveolaire et dispositif d’attenuation acoustique pour nacelle d'ensemble propulsif d'aeronef
US11052633B2 (en) 2018-05-17 2021-07-06 Safran Cabin Inc. Honeycomb core with improved acoustic properties and method for making same
BE1026313B1 (nl) * 2018-07-20 2019-12-23 Houtbuigerij G Desmet Nv Geluidsabsorberend paneel en werkwijze voor het vervaardigen van dergelijk geluidsabsorberende paneel
WO2020137017A1 (fr) 2018-12-26 2020-07-02 日本精化株式会社 Agent de blanchiment, promoteur de production d'acide hyaluronique, promoteur de production de collagène, piégeur d'oxygène actif intracellulaire, atténuateur d'irritation, agent d'amélioration des rides, complexe, produit cosmétique et préparation externe pour la peau
US11214350B2 (en) * 2019-01-25 2022-01-04 The Boeing Company Sound attenuation panel and methods of constructing and installing the same
CN111734552B (zh) * 2019-03-25 2022-01-11 珠海凯利得新材料有限公司 一种固体发动机的硬隔板及其制备方法
GB2583751B (en) * 2019-05-09 2022-02-02 Safran Nacelles Ltd Acoustic panel
FR3103953B1 (fr) * 2019-11-29 2021-11-12 Safran Aircraft Engines Pastille résonante et cellule de traitement acoustique dotée d’une telle pastille
RU2767483C1 (ru) * 2021-05-14 2022-03-17 Акционерное общество "Объединенная двигателестроительная корпорация" (АО "ОДК") Звукопоглощающая конструкция для авиационного двигателя

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Also Published As

Publication number Publication date
MY167288A (en) 2018-08-15
US8800714B2 (en) 2014-08-12
EP2864979B1 (fr) 2019-09-18
CN104364840B (zh) 2017-08-18
WO2014004215A1 (fr) 2014-01-03
CN104364840A (zh) 2015-02-18
RU2632252C2 (ru) 2017-10-03
EP2864979A1 (fr) 2015-04-29
CA2873117A1 (fr) 2014-01-03
BR112014032248A2 (pt) 2017-06-27
US20130341119A1 (en) 2013-12-26
MA37671A1 (fr) 2016-01-29
ES2753997T3 (es) 2020-04-15
KR102044680B1 (ko) 2019-11-14
RU2014152068A (ru) 2016-08-20
KR20150027260A (ko) 2015-03-11
JP2015528080A (ja) 2015-09-24
JP6284526B2 (ja) 2018-02-28
CA2873117C (fr) 2016-05-17

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