[go: up one dir, main page]

GB1462271A - Sound suppressing panels for ducts - Google Patents

Sound suppressing panels for ducts

Info

Publication number
GB1462271A
GB1462271A GB333174A GB333174A GB1462271A GB 1462271 A GB1462271 A GB 1462271A GB 333174 A GB333174 A GB 333174A GB 333174 A GB333174 A GB 333174A GB 1462271 A GB1462271 A GB 1462271A
Authority
GB
United Kingdom
Prior art keywords
duct
gas turbine
ducts
sound suppressing
chambers
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.)
Expired
Application number
GB333174A
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 GB1462271A publication Critical patent/GB1462271A/en
Expired 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24149—Honeycomb-like
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24744—Longitudinal or transverse tubular cavity or cell

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)
  • Exhaust Silencers (AREA)
  • Building Environments (AREA)
  • Pipe Accessories (AREA)
  • Duct Arrangements (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

1462271 Jet propulsion plant; gas turbine engines GENERAL ELECTRIC CO 24 Jan 1974 [1 Feb 1973] 03331/74 Headings F1B F1G and F1J [Also in Division F2] A sound absorbing panel 27 for use in lining duct walls in a ducted fan gas turbine jet engine, e.g. the air intake wall 26, includes a number of resonance chambers 30, 40, 50 of various sizes and all having individual necks 36, 46, 56 opening into the duct, the larger chambers being further from the duct. A porous face sheet (58), Fig. 3 (not shown), may be provided covering the neck openings.
GB333174A 1973-02-01 1974-01-24 Sound suppressing panels for ducts Expired GB1462271A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00328713A US3819009A (en) 1973-02-01 1973-02-01 Duct wall acoustic treatment

Publications (1)

Publication Number Publication Date
GB1462271A true GB1462271A (en) 1977-01-19

Family

ID=23282098

Family Applications (1)

Application Number Title Priority Date Filing Date
GB333174A Expired GB1462271A (en) 1973-02-01 1974-01-24 Sound suppressing panels for ducts

Country Status (8)

Country Link
US (1) US3819009A (en)
JP (1) JPS5723280B2 (en)
BE (1) BE810492A (en)
CA (1) CA986735A (en)
DE (1) DE2404001C2 (en)
FR (1) FR2216445B1 (en)
GB (1) GB1462271A (en)
IT (1) IT1007136B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2445436A1 (en) * 1978-12-27 1980-07-25 Rolls Royce MULTI-LAYER ACOUSTIC TRIM, FOR FLUID FLOW DUCTS, SUCH AS INTAKE OR EXHAUST DUCTS FOR GAS TURBINE ENGINES
US4540335A (en) * 1980-12-02 1985-09-10 Mitsubishi Jukogyo Kabushiki Kaisha Controllable-pitch moving blade type axial fan
GB2236804A (en) * 1989-07-26 1991-04-17 Anthony Reginald Robins Compound nozzle
GB2237323A (en) * 1989-10-06 1991-05-01 Coal Ind Fan silencer apparatus
GB2251030A (en) * 1990-10-22 1992-06-24 Daewoo Carrier Corp Reducing noise of compressors and pumps

Families Citing this family (65)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4174020A (en) * 1975-07-01 1979-11-13 Challis Louis A Acoustic treatment for fans
US4064961A (en) * 1976-04-05 1977-12-27 Rohr Industries, Incorporated Slanted cavity resonator
US4100993A (en) * 1976-04-15 1978-07-18 United Technologies Corporation Acoustic liner
US4106587A (en) * 1976-07-02 1978-08-15 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Sound-suppressing structure with thermal relief
US4189027A (en) * 1976-08-19 1980-02-19 United Technologies Corporation Sound suppressor liners
US4135603A (en) * 1976-08-19 1979-01-23 United Technologies Corporation Sound suppressor liners
US4137992A (en) * 1976-12-30 1979-02-06 The Boeing Company Turbojet engine nozzle for attenuating core and turbine noise
FR2376994A1 (en) * 1977-01-11 1978-08-04 Snecma IMPROVEMENTS TO RESONANT CAVITY DEVICES FOR THE REDUCTION OF NOISE IN A DUCT IN THE PRESENCE OF A GAS FLOW
JPS5447020A (en) * 1977-09-22 1979-04-13 Nissan Motor Co Ltd Sound insulating wall for internal combustion engine
DK142710B (en) * 1977-11-10 1980-12-29 Elektronikcentralen Sound absorbing structure.
DE2853613C2 (en) * 1977-12-22 1984-08-16 Rolls-Royce Ltd., London Soundproofing device for a ship's gas turbine system
US4294329A (en) * 1979-12-17 1981-10-13 Rohr Industries, Inc. Double layer attenuation panel with two layers of linear type material
US4318453A (en) * 1979-09-17 1982-03-09 Rohr Industries, Inc. Double layer attenuation panel
US4291080A (en) * 1980-03-31 1981-09-22 Vought Corporation Sound attenuating structural panel
GB2090334B (en) * 1980-12-29 1983-11-16 Rolls Royce Damping flutter of ducted fans
US4421455A (en) * 1981-12-22 1983-12-20 The Garrett Corporation Duct lining
JPS6443297A (en) * 1987-08-10 1989-02-15 Yasutaka Hoshino Method for making needle hole freely openable and closable
JPH0320975U (en) * 1989-07-10 1991-02-28
US5014431A (en) * 1989-07-24 1991-05-14 Arnim B. Jebe Tool for handling disposable food containing bags
US5127602B1 (en) * 1989-11-21 1995-05-02 Federal Express Corp Noise reduction kit for jet turbine engines.
US5758488A (en) * 1993-05-11 1998-06-02 Roderick Thomson Core flow expansion chamber device system for reduction of jet turbine engine noise
US5644918A (en) * 1994-11-14 1997-07-08 General Electric Company Dynamics free low emissions gas turbine combustor
US5777947A (en) * 1995-03-27 1998-07-07 Georgia Tech Research Corporation Apparatuses and methods for sound absorption using hollow beads loosely contained in an enclosure
US5592813A (en) * 1995-07-06 1997-01-14 Avaero Hush kit for jet engine
EP1342953A1 (en) * 2002-03-07 2003-09-10 Siemens Aktiengesellschaft Gas turbine
EP1342952A1 (en) * 2002-03-07 2003-09-10 Siemens Aktiengesellschaft Burner, process for operating a burner and gas turbine
GB0206136D0 (en) * 2002-03-15 2002-04-24 Rolls Royce Plc Improvements in or relating to cellular materials
DE102004012929B3 (en) * 2004-03-17 2005-04-21 Dornier Gmbh Noise reduction system for gas turbine engine for aircraft has surface cladding for hot gas channel downstream of turbine, with circular perforated plates covering large ends of frustoconical spaces
US7033137B2 (en) 2004-03-19 2006-04-25 Ametek, Inc. Vortex blower having helmholtz resonators and a baffle assembly
US7337875B2 (en) * 2004-06-28 2008-03-04 United Technologies Corporation High admittance acoustic liner
US7311175B2 (en) * 2005-08-10 2007-12-25 United Technologies Corporation Acoustic liner with bypass cooling
US7401682B2 (en) * 2005-08-10 2008-07-22 United Technologies Corporation Architecture for an acoustic liner
US7461719B2 (en) * 2005-11-10 2008-12-09 Siemens Energy, Inc. Resonator performance by local reduction of component thickness
DE202006012949U1 (en) * 2006-08-23 2007-12-27 Mann + Hummel Gmbh Silencer for an internal combustion engine
US20090025393A1 (en) * 2006-10-31 2009-01-29 Karl Edward Sheldon Auxiliary power unit assembly
GB0907578D0 (en) * 2009-05-05 2009-06-10 Rolls Royce Plc A damping assembly
US8413443B2 (en) * 2009-12-15 2013-04-09 Siemens Energy, Inc. Flow control through a resonator system of gas turbine combustor
JP5804808B2 (en) * 2011-07-07 2015-11-04 三菱日立パワーシステムズ株式会社 Gas turbine combustor and its combustion vibration damping method
US8469141B2 (en) * 2011-08-10 2013-06-25 General Electric Company Acoustic damping device for use in gas turbine engine
US10371051B2 (en) 2013-03-01 2019-08-06 United Technologies Corporation Gas turbine engine noise reducing nose cone
CA2963948C (en) 2014-10-08 2021-02-09 Dresser-Rand Company Concentric resonators for machines
FR3028886B1 (en) 2014-11-24 2019-09-13 Safran Aircraft Engines TURBOREACTOR BLOWER NOISE REDUCTION BODY
DE102015214709A1 (en) * 2015-07-31 2017-02-02 Mahle International Gmbh Flow channel and ventilation, heating or air conditioning
US9472179B1 (en) * 2015-09-05 2016-10-18 Xiaobing Cai Sound absorber
US10174675B2 (en) 2015-12-30 2019-01-08 General Electric Company Acoustic liner for gas turbine engine components
US20180281559A1 (en) * 2017-03-29 2018-10-04 Ford Global Technologies, Llc Acoustic air duct and air extraction system with nesting expansion chambers
US10532631B2 (en) 2017-03-29 2020-01-14 Ford Global Technologies, Llc Acoustic air duct and air extraction system including a plurality of channels having an expansion chamber
US10720136B2 (en) * 2017-12-04 2020-07-21 Zin Technologies, Inc. Layered chamber acoustic attenuation
SE544189C2 (en) * 2018-02-13 2022-02-22 Faurecia Creo Ab Acoustic damper for a gas duct system
US11059559B2 (en) 2018-03-05 2021-07-13 General Electric Company Acoustic liners with oblique cellular structures
WO2019195189A1 (en) * 2018-04-02 2019-10-10 Itt Manufacturing Enterprises Llc Multi-frequency helmholtz resonator system
US11047304B2 (en) 2018-08-08 2021-06-29 General Electric Company Acoustic cores with sound-attenuating protuberances
US10823059B2 (en) 2018-10-03 2020-11-03 General Electric Company Acoustic core assemblies with mechanically joined acoustic core segments, and methods of mechanically joining acoustic core segments
JP7310120B2 (en) 2018-11-05 2023-07-19 ヤマハ株式会社 sound absorbing structure
JP7172457B2 (en) * 2018-11-05 2022-11-16 ヤマハ株式会社 Sound-absorbing units and sound-absorbing structures
US11434819B2 (en) 2019-03-29 2022-09-06 General Electric Company Acoustic liners with enhanced acoustic absorption and reduced drag characteristics
US11008112B2 (en) * 2019-06-07 2021-05-18 Bryan B. Solstin Laminar inducing apparatus
US11339720B2 (en) * 2020-02-21 2022-05-24 Raytheon Technologies Corporation Acoustic liner with non-uniform volumetric distribution
US11566564B2 (en) * 2020-07-08 2023-01-31 Raytheon Technologies Corporation Acoustically treated panels
US11668236B2 (en) 2020-07-24 2023-06-06 General Electric Company Acoustic liners with low-frequency sound wave attenuating features
US11970992B2 (en) 2021-06-03 2024-04-30 General Electric Company Acoustic cores and tools and methods for forming the same
US12142253B2 (en) 2021-10-05 2024-11-12 General Electric Company Solid adhesive film for acoustic liner and method
DE102022129881B4 (en) 2021-11-15 2024-09-12 Hochschule für Technik und Wirtschaft Dresden, Körperschaft des öffentlichen Rechts Sound absorption structure
US11739698B2 (en) * 2022-01-19 2023-08-29 General Electric Company Aero-acoustically dampened bleed valve
US11965425B2 (en) 2022-05-31 2024-04-23 General Electric Company Airfoil for a turbofan engine

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3166149A (en) * 1965-01-19 Damped-resonator acoustical panels
BE554083A (en) * 1956-02-18
US2887173A (en) * 1957-05-22 1959-05-19 G A Societa Per Azioni Sa Sound absorbing and insulating panel
GB927865A (en) * 1958-10-06 1963-06-06 Wood Conversion Co Improvements in or relating to sound absorbing panels and the like
US3177970A (en) * 1961-01-21 1965-04-13 Gomma Antivibranti Applic Sound-absorbing panels with tapered holes therethrough
US3180448A (en) * 1962-01-02 1965-04-27 Aerojet General Co Laminated acoustic panel with sound absorbing cavities
AT254465B (en) * 1963-12-09 1967-05-26 Lothar Dr Ing Cremer Absorption silencers for gas pipes, in particular ventilation pipes
US3439774A (en) * 1966-01-21 1969-04-22 Boeing Co Sound energy absorbing apparatus
GB1147492A (en) * 1967-04-07 1969-04-02 Acoustics And Architecture Ltd Sound absorbing device
DE2019416B2 (en) * 1970-04-22 1972-04-20 Isoliertechnik Horst Grassmann, 6000 Frankfurt SILENCER FOR STREAMING GASES
US3688866A (en) * 1971-08-30 1972-09-05 Ibm Noise muffler for magnetic tape vacuum column
JPS4847302U (en) * 1971-10-08 1973-06-21

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2445436A1 (en) * 1978-12-27 1980-07-25 Rolls Royce MULTI-LAYER ACOUSTIC TRIM, FOR FLUID FLOW DUCTS, SUCH AS INTAKE OR EXHAUST DUCTS FOR GAS TURBINE ENGINES
US4540335A (en) * 1980-12-02 1985-09-10 Mitsubishi Jukogyo Kabushiki Kaisha Controllable-pitch moving blade type axial fan
GB2236804A (en) * 1989-07-26 1991-04-17 Anthony Reginald Robins Compound nozzle
GB2237323A (en) * 1989-10-06 1991-05-01 Coal Ind Fan silencer apparatus
GB2251030A (en) * 1990-10-22 1992-06-24 Daewoo Carrier Corp Reducing noise of compressors and pumps
GB2251030B (en) * 1990-10-22 1994-06-01 Daewoo Carrier Corp Noise reduction in rotary compressors and pumps

Also Published As

Publication number Publication date
CA986735A (en) 1976-04-06
DE2404001A1 (en) 1974-08-08
DE2404001C2 (en) 1983-10-27
IT1007136B (en) 1976-10-30
BE810492A (en) 1974-05-29
JPS49106111A (en) 1974-10-08
JPS5723280B2 (en) 1982-05-18
US3819009A (en) 1974-06-25
FR2216445A1 (en) 1974-08-30
FR2216445B1 (en) 1980-06-27

Similar Documents

Publication Publication Date Title
GB1462271A (en) Sound suppressing panels for ducts
GB2044359B (en) Gas turbine engine air intakes
GB1520720A (en) Sound-suppressing structures with thermal relief
JPS54145811A (en) Cooling air manifold for gas turbine engine
GB2308866B (en) Ducted fan gas turbine engine with secondary duct
DE3261740D1 (en) Stage of a gas turbine jet engine with air cooling means for the turbine rotor disc
GB1083738A (en) Improvements in variable area exhaust nozzle
GB1445384A (en) Ducted fan'ssembly having noise reduction means
CA1029201A (en) Nozzle and auxiliary inlet arrangement for gas turbine engine
GB897760A (en) Combined space lighting and ventilating apparatus
EP0266297A3 (en) Cooling air manifold for a gas turbine engine
GB2012370A (en) Air intake for supersonic air breathing jet propulsion engines
GB2095335B (en) Gas turbine engine air intake system
GB1012816A (en) Improvements relating to aircraft having jet lift engines
JPS56129723A (en) Air intake part for gas turbine engine
GB1340094A (en) Motor units
CA1002765A (en) Turbofan engine with fan duct flow deflector
GB713783A (en) Gas turbine propulsion units
GB2212859B (en) Ducted fan gas turbine engine with surge controller
GB1289906A (en)
GB2089894B (en) Gas turbine engine air dispensing arrangement
GB9215316D0 (en) Ducted fan gas turbine engine
GB1554962A (en) Gas turbine power plants
GB921128A (en) Cooling and ventilating arrangements for driving systems incorporating internal combustion engines
GB2049819B (en) Jet propulsion engine air intake duct

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee