DE2538887A1 - Akustischer kanal mit einer in umfangsrichtung unterteilten schalldaempfenden verkleidung - Google Patents

Akustischer kanal mit einer in umfangsrichtung unterteilten schalldaempfenden verkleidung

Info

Publication number
DE2538887A1
DE2538887A1 DE19752538887 DE2538887A DE2538887A1 DE 2538887 A1 DE2538887 A1 DE 2538887A1 DE 19752538887 DE19752538887 DE 19752538887 DE 2538887 A DE2538887 A DE 2538887A DE 2538887 A1 DE2538887 A1 DE 2538887A1
Authority
DE
Germany
Prior art keywords
strips
sound
channel
circumferential direction
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.)
Withdrawn
Application number
DE19752538887
Other languages
German (de)
English (en)
Inventor
Ramani Mani
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Publication of DE2538887A1 publication Critical patent/DE2538887A1/de
Withdrawn legal-status Critical Current

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
    • 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
    • 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
    • Y10T137/00—Fluid handling
    • Y10T137/0536—Highspeed fluid intake means [e.g., jet engine intake]

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Exhaust Silencers (AREA)
DE19752538887 1974-09-03 1975-09-02 Akustischer kanal mit einer in umfangsrichtung unterteilten schalldaempfenden verkleidung Withdrawn DE2538887A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/503,031 US3937590A (en) 1974-09-03 1974-09-03 Acoustic duct with peripherally segmented acoustic treatment

Publications (1)

Publication Number Publication Date
DE2538887A1 true DE2538887A1 (de) 1976-03-11

Family

ID=24000483

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19752538887 Withdrawn DE2538887A1 (de) 1974-09-03 1975-09-02 Akustischer kanal mit einer in umfangsrichtung unterteilten schalldaempfenden verkleidung

Country Status (6)

Country Link
US (1) US3937590A (enExample)
JP (1) JPS594523B2 (enExample)
DE (1) DE2538887A1 (enExample)
FR (1) FR2284158A1 (enExample)
GB (1) GB1516697A (enExample)
IT (1) IT1042129B (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022119407A1 (de) * 2022-08-02 2024-02-08 Bayerische Motoren Werke Aktiengesellschaft Flächenformteil und Kraftfahrzeug mit zumindest einem Flächenformteil

Families Citing this family (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1522558A (en) * 1976-04-05 1978-08-23 Rolls Royce Duct linings
US4104002A (en) * 1976-12-02 1978-08-01 General Electric Company Spiral strip acoustic treatment
US4185688A (en) * 1977-12-22 1980-01-29 General Electric Company Cooler fan noise suppressor
GB2076049B (en) * 1980-05-17 1983-10-26 Rolls Royce Variable acoustic impedance lining
US4692091A (en) * 1985-09-23 1987-09-08 Ritenour Paul E Low noise fan
US5004018A (en) * 1989-07-31 1991-04-02 Manville Corporation Insulated exhaust pipe and manufacture thereof
US5979593A (en) * 1997-01-13 1999-11-09 Hersh Acoustical Engineering, Inc. Hybrid mode-scattering/sound-absorbing segmented liner system and method
US6105206A (en) * 1999-04-13 2000-08-22 Department Of Water And Power City Of Los Angeles Portable electrically powered blower apparatus
BR9900914A (pt) * 1999-04-20 2000-10-24 Edmond Pol Jean Lepoutre Dispositivo controlador de porosidade em tubo helicoidal flexìvel acústico condutor de ar
US6409469B1 (en) 2000-11-21 2002-06-25 Pratt & Whitney Canada Corp. Fan-stator interaction tone reduction
US6439840B1 (en) 2000-11-30 2002-08-27 Pratt & Whitney Canada Corp. Bypass duct fan noise reduction assembly
FR2844304B1 (fr) * 2002-09-10 2004-12-10 Airbus France Couche acoustiquement resistive pour panneau d'attenuation acoustique, panneau utilisant une telle couche
GB0223697D0 (en) * 2002-10-14 2002-11-20 Rolls Royce Plc Acoustic liner for gas turbine engineers
US7861823B2 (en) * 2005-11-04 2011-01-04 United Technologies Corporation Duct for reducing shock related noise
US8602156B2 (en) * 2006-05-19 2013-12-10 United Technologies Corporation Multi-splice acoustic liner
DE102007019762A1 (de) 2007-04-25 2008-10-30 Eads Deutschland Gmbh Schallschutzvorrichtung für ein Strahltriebwerk oder eine Turbine
JP2009062977A (ja) * 2007-08-15 2009-03-26 Rohr Inc 線形音響ライナー
US8936434B2 (en) 2011-02-08 2015-01-20 Echo, Inc. Portable in-line fluid blower
DE102011056826B4 (de) 2011-12-21 2014-06-26 Eads Deutschland Gmbh Schallschutzvorrichtung und damit versehenes Triebwerk und Verfahren zur Bereitstellung
DE102012213622A1 (de) * 2012-08-02 2014-02-06 Siemens Aktiengesellschaft Turbomaschine
US10066548B2 (en) 2013-03-15 2018-09-04 United Technologies Corporation Acoustic liner with varied properties
US9169750B2 (en) * 2013-08-17 2015-10-27 ESI Energy Solutions, LLC. Fluid flow noise mitigation structure and method
CN103807220B (zh) * 2013-12-24 2016-03-23 国家电网公司 双旋主动式风机降噪总成
DE102014217089A1 (de) * 2014-08-27 2016-03-03 BSH Hausgeräte GmbH Haartrockner
US10378554B2 (en) 2014-09-23 2019-08-13 Pratt & Whitney Canada Corp. Gas turbine engine with partial inlet vane
US10145301B2 (en) 2014-09-23 2018-12-04 Pratt & Whitney Canada Corp. Gas turbine engine inlet
FR3028886B1 (fr) 2014-11-24 2019-09-13 Safran Aircraft Engines Organe de reduction de bruit de soufflante de turboreacteur
US9938848B2 (en) 2015-04-23 2018-04-10 Pratt & Whitney Canada Corp. Rotor assembly with wear member
US9957807B2 (en) 2015-04-23 2018-05-01 Pratt & Whitney Canada Corp. Rotor assembly with scoop
US10814966B2 (en) 2015-05-25 2020-10-27 Dotterel Technologies Limited Shroud for an aircraft
US10460714B1 (en) 2016-02-05 2019-10-29 United States Of America As Represented By The Administrator Of National Aeronautics And Space Administration Broadband acoustic absorbers
US10724540B2 (en) 2016-12-06 2020-07-28 Pratt & Whitney Canada Corp. Stator for a gas turbine engine fan
US10690146B2 (en) 2017-01-05 2020-06-23 Pratt & Whitney Canada Corp. Turbofan nacelle assembly with flow disruptor
AU2018306554A1 (en) 2017-07-24 2020-02-20 Dotterel Technologies Limited Shroud
CN112513976A (zh) 2018-05-16 2021-03-16 多特瑞尔技术有限公司 用于音频捕获的系统和方法
US12385589B2 (en) * 2021-08-27 2025-08-12 Dimension Product Solutions LP Noise suppression unit
US12085023B2 (en) * 2022-10-03 2024-09-10 General Electric Company Circumferentially varying fan casing treatments for reducing fan noise effects
US12092034B2 (en) * 2022-10-03 2024-09-17 General Electric Company Circumferentially varying fan casing treatments for reducing fan noise effects

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3263771A (en) * 1964-05-21 1966-08-02 Seifert Kurt Sound absorbing pipe lining having packing with different densities
US3508838A (en) * 1968-09-16 1970-04-28 Gen Electric Sound suppression of compressors used in gas turbine engines
US3620329A (en) * 1969-12-31 1971-11-16 Glasrock Products Jet engine noise suppressor
FR2191025B1 (enExample) * 1972-07-04 1975-03-07 Aerospatiale
US3819008A (en) * 1972-10-19 1974-06-25 Gen Electric Broad band acoustic barrier
US3830335A (en) * 1973-05-14 1974-08-20 Nasa Noise suppressor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022119407A1 (de) * 2022-08-02 2024-02-08 Bayerische Motoren Werke Aktiengesellschaft Flächenformteil und Kraftfahrzeug mit zumindest einem Flächenformteil

Also Published As

Publication number Publication date
IT1042129B (it) 1980-01-30
JPS594523B2 (ja) 1984-01-30
JPS5152801A (enExample) 1976-05-10
US3937590A (en) 1976-02-10
FR2284158A1 (fr) 1976-04-02
GB1516697A (en) 1978-07-05
FR2284158B1 (enExample) 1981-03-06

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
8130 Withdrawal