CA986735A - Duct wall acoustic treatment - Google Patents
Duct wall acoustic treatmentInfo
- Publication number
- CA986735A CA986735A CA189,000A CA189000A CA986735A CA 986735 A CA986735 A CA 986735A CA 189000 A CA189000 A CA 189000A CA 986735 A CA986735 A CA 986735A
- Authority
- CA
- Canada
- Prior art keywords
- duct wall
- acoustic treatment
- wall acoustic
- treatment
- duct
- 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
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)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Duct Arrangements (AREA)
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 |
---|---|
CA986735A true CA986735A (en) | 1976-04-06 |
Family
ID=23282098
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA189,000A Expired CA986735A (en) | 1973-02-01 | 1973-12-27 | Duct wall acoustic treatment |
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) |
Families Citing this family (68)
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 |
US4135603A (en) * | 1976-08-19 | 1979-01-23 | United Technologies Corporation | Sound suppressor liners |
US4189027A (en) * | 1976-08-19 | 1980-02-19 | 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 |
GB2038410B (en) * | 1978-12-27 | 1982-11-17 | Rolls Royce | Acoustic lining utilising resonance |
US4318453A (en) * | 1979-09-17 | 1982-03-09 | Rohr Industries, Inc. | Double layer attenuation panel |
US4294329A (en) * | 1979-12-17 | 1981-10-13 | Rohr Industries, Inc. | Double layer attenuation panel with two layers of linear type material |
US4291080A (en) * | 1980-03-31 | 1981-09-22 | Vought Corporation | Sound attenuating structural panel |
JPS6318799Y2 (en) * | 1980-12-02 | 1988-05-26 | ||
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 |
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 |
US5127602B1 (en) * | 1989-11-21 | 1995-05-02 | Federal Express Corp | Noise reduction kit for jet turbine engines. |
KR920007624B1 (en) * | 1990-10-22 | 1992-09-09 | 대우캐리어 주식회사 | Muffler for hermetic rotary compressor |
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 |
EP1342952A1 (en) * | 2002-03-07 | 2003-09-10 | Siemens Aktiengesellschaft | Burner, process for operating a burner and gas turbine |
EP1342953A1 (en) * | 2002-03-07 | 2003-09-10 | Siemens Aktiengesellschaft | 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 |
US7401682B2 (en) * | 2005-08-10 | 2008-07-22 | United Technologies Corporation | Architecture for an acoustic liner |
US7311175B2 (en) * | 2005-08-10 | 2007-12-25 | United Technologies Corporation | Acoustic liner with bypass cooling |
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 |
US10386065B2 (en) | 2014-10-08 | 2019-08-20 | 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 |
US11562727B2 (en) * | 2018-04-02 | 2023-01-24 | 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 |
JP7172457B2 (en) * | 2018-11-05 | 2022-11-16 | ヤマハ株式会社 | Sound-absorbing units and sound-absorbing structures |
JP7310120B2 (en) | 2018-11-05 | 2023-07-19 | ヤマハ株式会社 | sound absorbing structure |
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 |
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)
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 |
-
1973
- 1973-02-01 US US00328713A patent/US3819009A/en not_active Expired - Lifetime
- 1973-12-27 CA CA189,000A patent/CA986735A/en not_active Expired
-
1974
- 1974-01-24 GB GB333174A patent/GB1462271A/en not_active Expired
- 1974-01-28 IT IT19887/74A patent/IT1007136B/en active
- 1974-01-29 DE DE2404001A patent/DE2404001C2/en not_active Expired
- 1974-01-31 FR FR7403303A patent/FR2216445B1/fr not_active Expired
- 1974-02-01 BE BE140449A patent/BE810492A/en unknown
- 1974-02-01 JP JP1288374A patent/JPS5723280B2/ja not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS49106111A (en) | 1974-10-08 |
FR2216445B1 (en) | 1980-06-27 |
GB1462271A (en) | 1977-01-19 |
US3819009A (en) | 1974-06-25 |
JPS5723280B2 (en) | 1982-05-18 |
BE810492A (en) | 1974-05-29 |
IT1007136B (en) | 1976-10-30 |
DE2404001C2 (en) | 1983-10-27 |
DE2404001A1 (en) | 1974-08-08 |
FR2216445A1 (en) | 1974-08-30 |
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