JPS594523B2 - オンキヨウダクト - Google Patents
オンキヨウダクトInfo
- Publication number
- JPS594523B2 JPS594523B2 JP50106092A JP10609275A JPS594523B2 JP S594523 B2 JPS594523 B2 JP S594523B2 JP 50106092 A JP50106092 A JP 50106092A JP 10609275 A JP10609275 A JP 10609275A JP S594523 B2 JPS594523 B2 JP S594523B2
- Authority
- JP
- Japan
- Prior art keywords
- strips
- acoustic
- sound
- duct
- mode
- 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
- 230000001629 suppression Effects 0.000 claims description 12
- 230000001902 propagating effect Effects 0.000 claims description 10
- 239000011358 absorbing material Substances 0.000 claims description 6
- 230000003993 interaction Effects 0.000 claims description 3
- 238000013016 damping Methods 0.000 claims description 2
- 238000011282 treatment Methods 0.000 description 25
- 239000012814 acoustic material Substances 0.000 description 11
- 230000000694 effects Effects 0.000 description 6
- 230000002238 attenuated effect Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 230000001965 increasing effect Effects 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- OZFAFGSSMRRTDW-UHFFFAOYSA-N (2,4-dichlorophenyl) benzenesulfonate Chemical compound ClC1=CC(Cl)=CC=C1OS(=O)(=O)C1=CC=CC=C1 OZFAFGSSMRRTDW-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003670 easy-to-clean Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000001141 propulsive effect Effects 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
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)
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 (2)
| Publication Number | Publication Date |
|---|---|
| JPS5152801A JPS5152801A (OSRAM) | 1976-05-10 |
| JPS594523B2 true JPS594523B2 (ja) | 1984-01-30 |
Family
ID=24000483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP50106092A Expired JPS594523B2 (ja) | 1974-09-03 | 1975-09-03 | オンキヨウダクト |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3937590A (OSRAM) |
| JP (1) | JPS594523B2 (OSRAM) |
| DE (1) | DE2538887A1 (OSRAM) |
| FR (1) | FR2284158A1 (OSRAM) |
| GB (1) | GB1516697A (OSRAM) |
| IT (1) | IT1042129B (OSRAM) |
Families Citing this family (39)
| 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 |
| DE102022119407A1 (de) * | 2022-08-02 | 2024-02-08 | Bayerische Motoren Werke Aktiengesellschaft | Flächenformteil und Kraftfahrzeug mit zumindest einem Flächenformteil |
| 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)
| 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 (OSRAM) * | 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 |
-
1974
- 1974-09-03 US US05/503,031 patent/US3937590A/en not_active Expired - Lifetime
-
1975
- 1975-08-27 GB GB25349/75A patent/GB1516697A/en not_active Expired
- 1975-08-28 IT IT26680/75A patent/IT1042129B/it active
- 1975-09-02 DE DE19752538887 patent/DE2538887A1/de not_active Withdrawn
- 1975-09-03 JP JP50106092A patent/JPS594523B2/ja not_active Expired
- 1975-09-03 FR FR7526990A patent/FR2284158A1/fr active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| IT1042129B (it) | 1980-01-30 |
| JPS5152801A (OSRAM) | 1976-05-10 |
| US3937590A (en) | 1976-02-10 |
| FR2284158A1 (fr) | 1976-04-02 |
| DE2538887A1 (de) | 1976-03-11 |
| GB1516697A (en) | 1978-07-05 |
| FR2284158B1 (OSRAM) | 1981-03-06 |
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