GB1406844A - Sound absorbing panels - Google Patents
Sound absorbing panelsInfo
- Publication number
- GB1406844A GB1406844A GB4071972A GB4071972A GB1406844A GB 1406844 A GB1406844 A GB 1406844A GB 4071972 A GB4071972 A GB 4071972A GB 4071972 A GB4071972 A GB 4071972A GB 1406844 A GB1406844 A GB 1406844A
- Authority
- GB
- United Kingdom
- Prior art keywords
- webs
- perforate
- facing sheet
- ridges
- sound
- 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
-
- 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
-
- 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
- F02C7/24—Heat or noise insulation
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
1406844 Jet pipes-noise suppression panels SHORT BROS & HARLAND Ltd 29 Aug 1973 [1 Sept 1972] 40719/72 Heading F1J [Also in Division F2] A sound absorbing panel, particularly suitable for use in gas turbine engines, comprises a perforate facing sheet 12 and an imperforate facing sheet 13 with a corrugated core 11 therebetween formed of inclined webs 14a, 15a connected by ridges 21. The webs 14a are unperforated and the webs 15a are perforated. Thus the imperforate walls 14a of the core 11 forms with the facing sheets 12, 13 a plurality of side-by-side resonating cavities. The perforate walls 15a form dividing members which divide each cavity into a first chamber 23 and a second chamber 24. The perforate facing sheet 12 is arranged so that sound impinges directly on its surface. The first chamber 23 acts as a resonator to absorb a first characteristic frequency and the first and second chambers 23, 24 together act as a resonator to absorb sound of a second characteristic frequency. Thus the chambers together absorb sound over a broad band of frequencies. In alternative embodiments, Figs. 2 and 3 (not shown), the core 11 is sinusoidal in cross-section or has the webs corrugated with flutes extending in a direction at right angles to the length of the ridges and terminating at each end a predetermined distance from the ridges. Any of these sound absorbing panels may be incorporated in the jet pipe 30 of a gas turbine engine 31 with the cavities extending in planes normal to the axis of the jet pipe 30 and so that the perforate facing sheet 12 presents a flowdefining surface for the exhaust gases. The noise attenuating performance of the panel may be enhanced by the addition of one or more partitions (37), Fig.5 (not shown) which extend axially along the jet pipe to divide each cavity into a number of circumferentially extending portions.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4071972A GB1406844A (en) | 1972-09-01 | 1972-09-01 | Sound absorbing panels |
| DE19732344214 DE2344214A1 (en) | 1972-09-01 | 1973-09-01 | SOUND ABSORPTION WALL FOR GAS TURBINE MOTORS |
| FR7331775A FR2201010A5 (en) | 1972-09-01 | 1973-09-03 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4071972A GB1406844A (en) | 1972-09-01 | 1972-09-01 | Sound absorbing panels |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1406844A true GB1406844A (en) | 1975-09-17 |
Family
ID=10416282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4071972A Expired GB1406844A (en) | 1972-09-01 | 1972-09-01 | Sound absorbing panels |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE2344214A1 (en) |
| FR (1) | FR2201010A5 (en) |
| GB (1) | GB1406844A (en) |
Cited By (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2848597A1 (en) * | 1977-11-10 | 1979-05-17 | Elektronikcentralen | SOUND-INSULATING STRUCTURE |
| GB2236804A (en) * | 1989-07-26 | 1991-04-17 | Anthony Reginald Robins | Compound nozzle |
| GB2340585A (en) * | 1998-07-25 | 2000-02-23 | Federal Mogul Sealing Sys Spa | Heat shields |
| EP1098294A3 (en) * | 1999-11-02 | 2001-08-16 | CWW-GERKO Akustik GmbH & Co. KG | Noise attenuating wall and use thereof |
| DE20319319U1 (en) * | 2003-12-12 | 2005-04-28 | Carcoustics Tech Center Gmbh | Sound absorbing heat shield |
| ITRM20090259A1 (en) * | 2009-05-21 | 2010-11-22 | Consiglio Per La Ricerca E La Speri Mentazione In | LAMELLA TO CAPTURE LIQUIDS IN DROPS AND TEST BENCH PROVIDED WITH SUCH LAMELS. |
| WO2011123392A3 (en) * | 2010-03-31 | 2011-11-24 | The Boeing Company | Unitized engine nacelle structure |
| GB2494039A (en) * | 2011-08-25 | 2013-02-27 | Gen Electric | Vibration and sound attenuator for a MRI scanner |
| US9592918B2 (en) | 2014-06-23 | 2017-03-14 | Rohr, Inc. | Acoustic liner |
| RU172257U1 (en) * | 2015-10-02 | 2017-07-03 | Государственное предприятие "Запорожское машиностроительно конструкторское бюро "Прогресс" имени академика А.Г. Ивченко | SOUND INSULATION PANEL OF GAS-TURBINE ENGINE |
| US9704467B1 (en) | 2016-04-15 | 2017-07-11 | Rohr, Inc. | Acoustic panel with corrugated baffles and septums |
| US9761216B2 (en) | 2016-02-10 | 2017-09-12 | Rohr, Inc. | Acoustic panel with angled corrugated core structures |
| US9764818B2 (en) | 2016-02-10 | 2017-09-19 | Rohr, Inc. | Structural, cellular core with corrugated support walls |
| CN107916992A (en) * | 2016-10-07 | 2018-04-17 | 通用电气公司 | Impact dispersed components thereof and its manufacture method for turbogenerator |
| US9978354B2 (en) | 2016-04-15 | 2018-05-22 | Rohr, Inc. | Acoustic panel with vertical stiffeners |
| US20180142621A1 (en) * | 2016-11-18 | 2018-05-24 | Rohr, Inc. | Acoustic panel with sidewall stringers |
| EP3336331A1 (en) * | 2016-09-27 | 2018-06-20 | General Electric Company | Sound attenuating system for a gas turbine engine |
| US10316755B2 (en) * | 2016-11-18 | 2019-06-11 | Rohr, Inc. | Acoustic panel with sidewall stringers |
| US10414481B2 (en) | 2017-02-14 | 2019-09-17 | Rohr, Inc. | Method for forming a structural panel |
| US10436118B2 (en) | 2017-06-19 | 2019-10-08 | Rohr, Inc. | Acoustic panel with folding chamber |
| US10525636B2 (en) | 2017-06-19 | 2020-01-07 | Rohr, Inc. | Process for forming a fiber-reinforced composite structure |
| US10676171B2 (en) | 2017-08-18 | 2020-06-09 | Rohr, Inc. | Structural panel with splice joint between adjacent core structures |
| CN111318856A (en) * | 2018-12-14 | 2020-06-23 | 罗尔公司 | Forming a structured panel with one or more structural stiffeners |
| US10695986B2 (en) | 2017-08-22 | 2020-06-30 | Rohr, Inc. | Method for forming a structural panel |
| US10906659B2 (en) | 2018-04-03 | 2021-02-02 | Rohr, Inc. | Structured panel with structural reinforcement(s) |
| US10994856B2 (en) | 2017-10-16 | 2021-05-04 | Rohr, Inc. | Structural panel with splice joint between adjacent core structures |
| US11242822B2 (en) | 2018-12-14 | 2022-02-08 | Rohr, Inc. | Structured panel with multi-panel structure(s) |
| US11572850B2 (en) | 2019-06-04 | 2023-02-07 | Rohr, Inc. | Acoustic panel with one or more structural stiffeners |
| US11600255B2 (en) | 2020-12-22 | 2023-03-07 | Rohr, Inc. | Acoustic panel core with multi-material and/or multi-layered construction |
| EP4159997A3 (en) * | 2021-09-13 | 2023-06-14 | Rohr, Inc. | Low-frequency acoustic center body |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2090334B (en) * | 1980-12-29 | 1983-11-16 | Rolls Royce | Damping flutter of ducted fans |
| FR2498793A1 (en) * | 1981-01-29 | 1982-07-30 | Snecma | INSONORIZING TRIM FOR GAS DUCT, IN PARTICULAR FOR A TURBOREACTOR BLOWER VEHICLE AND TOOLS FOR MANUFACTURING SAME |
| DE69019133T2 (en) * | 1989-06-26 | 1996-01-04 | Grumman Aerospace Corp | ACOUSTIC COATING. |
| DE4131777A1 (en) * | 1991-09-24 | 1993-03-25 | Linde Ag | FLUID-FLOWED MUFFLER |
| FR2951854B1 (en) * | 2009-10-22 | 2014-09-12 | Onera (Off Nat Aerospatiale) | ACOUSTIC ABSORPTION DEVICE |
| CN105469781A (en) * | 2014-09-04 | 2016-04-06 | 北京市劳动保护科学研究所 | Composite sound absorbing structure |
-
1972
- 1972-09-01 GB GB4071972A patent/GB1406844A/en not_active Expired
-
1973
- 1973-09-01 DE DE19732344214 patent/DE2344214A1/en active Pending
- 1973-09-03 FR FR7331775A patent/FR2201010A5/fr not_active Expired
Cited By (39)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2848597A1 (en) * | 1977-11-10 | 1979-05-17 | Elektronikcentralen | SOUND-INSULATING STRUCTURE |
| GB2236804A (en) * | 1989-07-26 | 1991-04-17 | Anthony Reginald Robins | Compound nozzle |
| GB2340585A (en) * | 1998-07-25 | 2000-02-23 | Federal Mogul Sealing Sys Spa | Heat shields |
| GB2340585B (en) * | 1998-07-25 | 2002-06-12 | Federal Mogul Sealing Sys Spa | Heat shields |
| EP1098294A3 (en) * | 1999-11-02 | 2001-08-16 | CWW-GERKO Akustik GmbH & Co. KG | Noise attenuating wall and use thereof |
| DE20319319U1 (en) * | 2003-12-12 | 2005-04-28 | Carcoustics Tech Center Gmbh | Sound absorbing heat shield |
| ITRM20090259A1 (en) * | 2009-05-21 | 2010-11-22 | Consiglio Per La Ricerca E La Speri Mentazione In | LAMELLA TO CAPTURE LIQUIDS IN DROPS AND TEST BENCH PROVIDED WITH SUCH LAMELS. |
| WO2011123392A3 (en) * | 2010-03-31 | 2011-11-24 | The Boeing Company | Unitized engine nacelle structure |
| US8220588B2 (en) | 2010-03-31 | 2012-07-17 | The Boeing Company | Unitized engine nacelle structure |
| CN105539858A (en) * | 2010-03-31 | 2016-05-04 | 波音公司 | Engine nacelle, method for assembling barrel body structure, and method for constructing inner barrel structure of engine nacelle |
| EP3075660A1 (en) * | 2010-03-31 | 2016-10-05 | The Boeing Company | Unitized engine nacelle structure |
| GB2494039A (en) * | 2011-08-25 | 2013-02-27 | Gen Electric | Vibration and sound attenuator for a MRI scanner |
| GB2494039B (en) * | 2011-08-25 | 2018-08-08 | Gen Electric | Apparatus and method to attenuate vibration and acoustic noise |
| US9592918B2 (en) | 2014-06-23 | 2017-03-14 | Rohr, Inc. | Acoustic liner |
| RU172257U1 (en) * | 2015-10-02 | 2017-07-03 | Государственное предприятие "Запорожское машиностроительно конструкторское бюро "Прогресс" имени академика А.Г. Ивченко | SOUND INSULATION PANEL OF GAS-TURBINE ENGINE |
| EP3205574A3 (en) * | 2016-02-10 | 2017-11-22 | Rohr, Inc. | Structural, cellular core with corrugated support walls |
| US9764818B2 (en) | 2016-02-10 | 2017-09-19 | Rohr, Inc. | Structural, cellular core with corrugated support walls |
| US9761216B2 (en) | 2016-02-10 | 2017-09-12 | Rohr, Inc. | Acoustic panel with angled corrugated core structures |
| EP3232435A1 (en) * | 2016-04-15 | 2017-10-18 | Rohr, Inc. | Acoustic panel with corrugated baffles and septums |
| US9978354B2 (en) | 2016-04-15 | 2018-05-22 | Rohr, Inc. | Acoustic panel with vertical stiffeners |
| US9704467B1 (en) | 2016-04-15 | 2017-07-11 | Rohr, Inc. | Acoustic panel with corrugated baffles and septums |
| EP3336331A1 (en) * | 2016-09-27 | 2018-06-20 | General Electric Company | Sound attenuating system for a gas turbine engine |
| CN107916992A (en) * | 2016-10-07 | 2018-04-17 | 通用电气公司 | Impact dispersed components thereof and its manufacture method for turbogenerator |
| US20180142621A1 (en) * | 2016-11-18 | 2018-05-24 | Rohr, Inc. | Acoustic panel with sidewall stringers |
| US10309305B2 (en) * | 2016-11-18 | 2019-06-04 | Rohr, Inc. | Acoustic panel with sidewall stringers |
| US10316755B2 (en) * | 2016-11-18 | 2019-06-11 | Rohr, Inc. | Acoustic panel with sidewall stringers |
| US10414481B2 (en) | 2017-02-14 | 2019-09-17 | Rohr, Inc. | Method for forming a structural panel |
| US10436118B2 (en) | 2017-06-19 | 2019-10-08 | Rohr, Inc. | Acoustic panel with folding chamber |
| US10525636B2 (en) | 2017-06-19 | 2020-01-07 | Rohr, Inc. | Process for forming a fiber-reinforced composite structure |
| US10676171B2 (en) | 2017-08-18 | 2020-06-09 | Rohr, Inc. | Structural panel with splice joint between adjacent core structures |
| US10695986B2 (en) | 2017-08-22 | 2020-06-30 | Rohr, Inc. | Method for forming a structural panel |
| US10994856B2 (en) | 2017-10-16 | 2021-05-04 | Rohr, Inc. | Structural panel with splice joint between adjacent core structures |
| US10906659B2 (en) | 2018-04-03 | 2021-02-02 | Rohr, Inc. | Structured panel with structural reinforcement(s) |
| CN111318856A (en) * | 2018-12-14 | 2020-06-23 | 罗尔公司 | Forming a structured panel with one or more structural stiffeners |
| US11242822B2 (en) | 2018-12-14 | 2022-02-08 | Rohr, Inc. | Structured panel with multi-panel structure(s) |
| US11398214B2 (en) | 2018-12-14 | 2022-07-26 | Rohr, Inc. | Forming a structured panel with one or more structural reinforcements |
| US11572850B2 (en) | 2019-06-04 | 2023-02-07 | Rohr, Inc. | Acoustic panel with one or more structural stiffeners |
| US11600255B2 (en) | 2020-12-22 | 2023-03-07 | Rohr, Inc. | Acoustic panel core with multi-material and/or multi-layered construction |
| EP4159997A3 (en) * | 2021-09-13 | 2023-06-14 | Rohr, Inc. | Low-frequency acoustic center body |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2201010A5 (en) | 1974-04-19 |
| DE2344214A1 (en) | 1974-03-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB1406844A (en) | Sound absorbing panels | |
| US4135603A (en) | Sound suppressor liners | |
| GB1456302A (en) | Sound suppressing panels | |
| US4433751A (en) | Sound suppressor liner | |
| US4189027A (en) | Sound suppressor liners | |
| US4231447A (en) | Multi-layer acoustic linings | |
| GB1429240A (en) | Acoustic damping and cooling of exhaust ducts for example of gas turbine jet engines | |
| JPS6038717B2 (en) | sound absorbing panel | |
| GB1210205A (en) | Improvements in sound absorbing structure | |
| GB1369345A (en) | Sound absorption structure | |
| GB1520720A (en) | Sound-suppressing structures with thermal relief | |
| JPH0578040B2 (en) | ||
| US3286786A (en) | Gas turbine exhaust silencer and acoustical material therefor | |
| US2904125A (en) | Straight through silencer | |
| GB2024380A (en) | Acoustic linings for fluid flow ducts | |
| US3709319A (en) | Resonator chamber silencer for gas turbine | |
| JPH07139429A (en) | Noise control element used for noise controller for jet engine | |
| JPS595764B2 (en) | Silencer | |
| CN112233637B (en) | Noise reduction device and gas water heater | |
| SU985345A1 (en) | Noise silencer | |
| SU516093A1 (en) | Silencer | |
| SU1368451A1 (en) | Noise muffler | |
| SU1629576A1 (en) | Noise suppresor | |
| JPS5893919A (en) | Exhaust device | |
| RU154809U1 (en) | DEVICE FOR REDUCING THE NOISE OF A GAS-TURBINE ENGINE |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |