JP2007529666A - ターボファンエンジン内の騒音低減構造 - Google Patents
ターボファンエンジン内の騒音低減構造 Download PDFInfo
- Publication number
- JP2007529666A JP2007529666A JP2007503184A JP2007503184A JP2007529666A JP 2007529666 A JP2007529666 A JP 2007529666A JP 2007503184 A JP2007503184 A JP 2007503184A JP 2007503184 A JP2007503184 A JP 2007503184A JP 2007529666 A JP2007529666 A JP 2007529666A
- Authority
- JP
- Japan
- Prior art keywords
- horn
- turbofan engine
- cover plate
- liner material
- hot gas
- 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.)
- Granted
Links
- 239000000463 material Substances 0.000 claims abstract description 13
- 239000011148 porous material Substances 0.000 claims abstract description 8
- 238000010521 absorption reaction Methods 0.000 claims description 7
- 238000002485 combustion reaction Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 239000006098 acoustic absorber Substances 0.000 description 2
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
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
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/30—Exhaust heads, chambers, or the like
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K1/00—Plants characterised by the form or arrangement of the jet pipe or nozzle; Jet pipes or nozzles peculiar thereto
- F02K1/78—Other construction of jet pipes
- F02K1/82—Jet pipe walls, e.g. liners
- F02K1/827—Sound absorbing structures or liners
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
- F23R2900/00—Special features of, or arrangements for continuous combustion chambers; Combustion processes therefor
- F23R2900/00014—Reducing thermo-acoustic vibrations by passive means, e.g. by Helmholtz resonators
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)
- Exhaust Silencers (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
【選択図】図2
Description
1つの中空チャンバHRは、カバープレートABと底面GFとに加えて更に、4つの側面SFによって画成されている。このカセット化する方法において、複数の中空チャンバは隙間なしに直接配列され、各々の中空チャンバは共通の側壁SFによって互いに隔てられている。これによって、高度に軽量化された構造が得られている。
ホーンマウス部の直径:23mm
ホーンスロート部の直径:7mm
Claims (3)
- ターボファンエンジンが高温ガス領域内で発生する騒音を低減する構造において、
該構造は、ターボファンエンジンの高温ガス流路(SK)の音響吸収ライナー材(A)として構成されており、
前記音響吸収ライナー材(A)は密集して配列された多数の中空チャンバ(HR)から成り、それら中空チャンバ(HR)の各々に4つずつのホーン(H)が設けられており、
前記ホーン(H)は、そのホーンマウス部(HM)が、多数の細孔が穿設されたカバープレート(AB)に固定されており、該カバープレート(AB)が前記高温ガス流路(SK)の壁面を形成している、
ことを特徴とする構造。 - 前記ホーンの軸心方向に測った前記中空チャンバ(HR)の深さが34mmであり、
前記ホーン(H)の長さが23mmであり、
前記ホーンマウス部(HM)の直径が23mmであり、
前記ホーンのホーンスロート部(HH)の直径が7mmである、
ことを特徴とする請求項1記載の構造。 - 前記カバープレートの前記細孔による開口率が少なくとも20%であることを特徴とする請求項1又は2記載の構造。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004012929A DE102004012929B3 (de) | 2004-03-17 | 2004-03-17 | Anordnung zur Lärmreduzierung in Turbofantriebwerken |
PCT/DE2005/000073 WO2005091272A1 (de) | 2004-03-17 | 2005-01-20 | Anordnung zur lärmreduzierung in turbofantriebwerken |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2007529666A true JP2007529666A (ja) | 2007-10-25 |
JP4659021B2 JP4659021B2 (ja) | 2011-03-30 |
Family
ID=34353596
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2007503184A Expired - Fee Related JP4659021B2 (ja) | 2004-03-17 | 2005-01-20 | ターボファンエンジン内の騒音低減構造 |
Country Status (5)
Country | Link |
---|---|
US (1) | US7819224B2 (ja) |
EP (1) | EP1726004A1 (ja) |
JP (1) | JP4659021B2 (ja) |
DE (1) | DE102004012929B3 (ja) |
WO (1) | WO2005091272A1 (ja) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2898940B1 (fr) * | 2006-03-24 | 2008-05-30 | Snecma Sa | Corps central de tuyere de turboreacteur |
DE102011008920A1 (de) * | 2011-01-19 | 2012-07-19 | Rolls-Royce Deutschland Ltd & Co Kg | Schallabsorber, insbesondere für einen Gasturbinenabgaskonus und Verfahren zu dessen Herstellung |
US8826669B2 (en) | 2011-11-09 | 2014-09-09 | Pratt & Whitney Canada Corp. | Gas turbine exhaust case |
US9200537B2 (en) | 2011-11-09 | 2015-12-01 | Pratt & Whitney Canada Corp. | Gas turbine exhaust case with acoustic panels |
US8944753B2 (en) | 2011-11-09 | 2015-02-03 | Pratt & Whitney Canada Corp. | Strut mounting arrangement for gas turbine exhaust case |
DE102011120979A1 (de) * | 2011-12-13 | 2013-06-13 | Rolls-Royce Deutschland Ltd & Co Kg | Akustischer Absorber |
GB201301702D0 (en) | 2013-01-31 | 2013-03-20 | Rolls Royce Plc | Exhaust cone |
US8997923B2 (en) * | 2013-08-12 | 2015-04-07 | Hexcel Corporation | Sound wave guide for use in acoustic structures |
US10344711B2 (en) * | 2016-01-11 | 2019-07-09 | Rolls-Royce Corporation | System and method of alleviating blade flutter |
US10465539B2 (en) * | 2017-08-04 | 2019-11-05 | Pratt & Whitney Canada Corp. | Rotor casing |
FR3074223A1 (fr) * | 2017-11-28 | 2019-05-31 | Airbus Operations | Panneau d’attenuation acoustique pour aeronef. |
US11059559B2 (en) * | 2018-03-05 | 2021-07-13 | General Electric Company | Acoustic liners with oblique cellular structures |
FR3088905A1 (fr) * | 2018-11-28 | 2020-05-29 | Airbus Operations (S.A.S.) | Structure d’absorption acoustique comprenant un système de drainage de liquide et ensemble propulsif comportant une telle structure d’absorption acoustique |
US20200388265A1 (en) * | 2019-06-10 | 2020-12-10 | Toyota Motor Engineering & Manufacturing North America, Inc. | Sound isolation device |
FR3099963A1 (fr) * | 2019-08-13 | 2021-02-19 | Airbus Operations | Elément acoustique à double enceinte et encombrement réduit, en particulier pour panneau acoustique d’aéronef |
FR3117658B1 (fr) * | 2020-12-15 | 2023-08-11 | Safran Aircraft Engines | Panneau de traitement acoustique à encombrement réduit pour turboréacteur |
US11715450B2 (en) * | 2020-12-22 | 2023-08-01 | Rohr, Inc. | Acoustic panel core cell with funnel shaped septum |
US11970992B2 (en) | 2021-06-03 | 2024-04-30 | General Electric Company | Acoustic cores and tools and methods for forming the same |
US11635026B1 (en) * | 2021-12-21 | 2023-04-25 | Rolls-Royce Deutschland Ltd & Co Kg | Fan case assembly for a gas turbine engine |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS49106111A (ja) * | 1973-02-01 | 1974-10-08 | ||
GB1470036A (en) * | 1975-01-17 | 1977-04-14 | Lockheed Aircraft Corp | Dual range sound absorber |
GB2005384A (en) * | 1977-10-04 | 1979-04-19 | Rolls Royce | Multi-layer acoustic lining |
JPS574814B2 (ja) * | 1976-04-05 | 1982-01-27 | ||
JPS6014893B2 (ja) * | 1976-07-02 | 1985-04-16 | ゼネラル・エレクトリツク・カンパニイ | 騒音抑制構造体 |
JPH07139429A (ja) * | 1993-06-25 | 1995-05-30 | Nordam | ジェットエンジン用の騒音抑止装置に使用される騒音抑止要素 |
JPH09170494A (ja) * | 1995-12-20 | 1997-06-30 | Ishikawajima Harima Heavy Ind Co Ltd | 吸音ライナ |
US5670758A (en) * | 1995-04-20 | 1997-09-23 | Oerlikon-Contraves Ag | Acoustic protection on payload fairings of expendable launch vehicles |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3174580A (en) * | 1961-04-28 | 1965-03-23 | Kurt W Schulz | Acoustical tile construction |
US3437173A (en) * | 1966-11-25 | 1969-04-08 | Gen Electric | Gas turbine engine with screech attenuating means |
US3819007A (en) * | 1973-04-27 | 1974-06-25 | Lockheed Aircraft Corp | Controllable laminar sound absorptive structure |
US3887031A (en) * | 1973-06-11 | 1975-06-03 | Lockheed Aircraft Corp | Dual-range sound absorber |
US4135603A (en) * | 1976-08-19 | 1979-01-23 | United Technologies Corporation | Sound suppressor liners |
FR2376994A1 (fr) * | 1977-01-11 | 1978-08-04 | Snecma | Perfectionnements aux dispositifs a cavites resonnantes pour la reduction du bruit dans un conduit en presence d'un flux gazeux |
US4231447A (en) * | 1978-04-29 | 1980-11-04 | Rolls-Royce Limited | Multi-layer acoustic linings |
US4452335A (en) * | 1982-05-03 | 1984-06-05 | United Technologies Corporation | Sound absorbing structure for a gas turbine engine |
US5185504A (en) * | 1992-06-30 | 1993-02-09 | Jen Wang H | Acoustic board |
FR2686628A1 (fr) * | 1992-01-28 | 1993-07-30 | Perfojet Sa | Structure textile complexe a base de nappes fibreuses non tissees et procede et installation pour son obtention. |
US5386689A (en) | 1992-10-13 | 1995-02-07 | Noises Off, Inc. | Active gas turbine (jet) engine noise suppression |
JP3076945B2 (ja) * | 1993-06-15 | 2000-08-14 | 松下電器産業株式会社 | 吸音装置 |
DE69609888T2 (de) * | 1995-04-20 | 2001-02-22 | Contraves Space Ag Zuerich | Akustischer Schutz an Nutzlastverkleidungen für Trägerraketen |
-
2004
- 2004-03-17 DE DE102004012929A patent/DE102004012929B3/de not_active Expired - Fee Related
-
2005
- 2005-01-20 WO PCT/DE2005/000073 patent/WO2005091272A1/de active Application Filing
- 2005-01-20 JP JP2007503184A patent/JP4659021B2/ja not_active Expired - Fee Related
- 2005-01-20 EP EP05714879A patent/EP1726004A1/de not_active Withdrawn
- 2005-01-20 US US10/592,932 patent/US7819224B2/en not_active Expired - Fee Related
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS49106111A (ja) * | 1973-02-01 | 1974-10-08 | ||
GB1470036A (en) * | 1975-01-17 | 1977-04-14 | Lockheed Aircraft Corp | Dual range sound absorber |
JPS574814B2 (ja) * | 1976-04-05 | 1982-01-27 | ||
JPS6014893B2 (ja) * | 1976-07-02 | 1985-04-16 | ゼネラル・エレクトリツク・カンパニイ | 騒音抑制構造体 |
GB2005384A (en) * | 1977-10-04 | 1979-04-19 | Rolls Royce | Multi-layer acoustic lining |
JPH07139429A (ja) * | 1993-06-25 | 1995-05-30 | Nordam | ジェットエンジン用の騒音抑止装置に使用される騒音抑止要素 |
US5670758A (en) * | 1995-04-20 | 1997-09-23 | Oerlikon-Contraves Ag | Acoustic protection on payload fairings of expendable launch vehicles |
JPH09170494A (ja) * | 1995-12-20 | 1997-06-30 | Ishikawajima Harima Heavy Ind Co Ltd | 吸音ライナ |
Also Published As
Publication number | Publication date |
---|---|
EP1726004A1 (de) | 2006-11-29 |
WO2005091272A1 (de) | 2005-09-29 |
US7819224B2 (en) | 2010-10-26 |
US20080308345A1 (en) | 2008-12-18 |
JP4659021B2 (ja) | 2011-03-30 |
DE102004012929B3 (de) | 2005-04-21 |
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