JP2001518160A - ジェットエンジンのための騒音減少方法及び装置 - Google Patents
ジェットエンジンのための騒音減少方法及び装置Info
- Publication number
- JP2001518160A JP2001518160A JP53889398A JP53889398A JP2001518160A JP 2001518160 A JP2001518160 A JP 2001518160A JP 53889398 A JP53889398 A JP 53889398A JP 53889398 A JP53889398 A JP 53889398A JP 2001518160 A JP2001518160 A JP 2001518160A
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- Prior art keywords
- plasma
- wave
- signal
- controller
- noise
- 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.)
- Ceased
Links
Classifications
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B1/20—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of a vibrating fluid
-
- 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
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
- G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
- G10K11/1785—Methods, e.g. algorithms; Devices
-
- 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
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
- G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
- G10K11/1785—Methods, e.g. algorithms; Devices
- G10K11/17857—Geometric disposition, e.g. placement of microphones
-
- 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
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
- G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
- G10K11/1787—General system configurations
- G10K11/17879—General system configurations using both a reference signal and an error signal
- G10K11/17881—General system configurations using both a reference signal and an error signal the reference signal being an acoustic signal, e.g. recorded with a microphone
-
- 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
- G10K15/00—Acoustics not otherwise provided for
- G10K15/04—Sound-producing devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2260/00—Function
- F05D2260/96—Preventing, counteracting or reducing vibration or noise
- F05D2260/962—Preventing, counteracting or reducing vibration or noise by means of "anti-noise"
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2270/00—Control
- F05D2270/01—Purpose of the control system
- F05D2270/17—Purpose of the control system to control boundary layer
- F05D2270/172—Purpose of the control system to control boundary layer by a plasma generator, e.g. control of ignition
-
- 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
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/10—Applications
- G10K2210/103—Three dimensional
-
- 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
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/10—Applications
- G10K2210/107—Combustion, e.g. burner noise control of jet engines
-
- 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
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/10—Applications
- G10K2210/128—Vehicles
- G10K2210/1281—Aircraft, e.g. spacecraft, airplane or helicopter
-
- 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
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/30—Means
- G10K2210/301—Computational
- G10K2210/3026—Feedback
-
- 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
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/30—Means
- G10K2210/301—Computational
- G10K2210/3027—Feedforward
-
- 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
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/30—Means
- G10K2210/321—Physical
- G10K2210/3212—Actuator details, e.g. composition or microstructure
-
- 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
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/30—Means
- G10K2210/321—Physical
- G10K2210/3216—Cancellation means disposed in the vicinity of the source
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Exhaust Silencers (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
Description
Claims (1)
- 【特許請求の範囲】 1. プラズマの如き電気的に導電性の膨張可能な媒体の近傍における音響ノイ ズ波を相殺する装置において、 上記音響ノイズ波を検出し、当該音響ノイズ波を表す電気ノイズ信号を発生さ せるセンサと; 上記センサに結合され、上記電気ノイズ信号に基づく電気干渉信号であって、 波の相殺を可能にするように当該電気ノイズ信号から実質的に位相反転される電 気干渉信号を発生させるコントローラと; 上記コントローラに電気的に結合され、上記電気干渉信号を上記電気的に導電 性のプラズマへ供給するプラズマ結合手段と; 上記電気干渉信号に関連し、上記電気的に導電性のプラズマが脈動干渉波を発 生させて上記音響ノイズ波を実質上相殺することを可能にさせる音響発生手段と ; を有することを特徴とする装置。 2. 請求の範囲第1項に記載の装置において、上記装置が更に、 上記センサ、コントローラ及びプラズマ結合手段を一括して収容するガスター ビンエンジンを有することを特徴とする装置。 3. 請求の範囲第1項に記載の装置において、上記コントローラが上記センサ に結合された信号アナライザを有することを特徴とする装置。 4. 請求の範囲第1項に記載の装置において、上記コントローラが波形発生器 を有することを特徴とする装置。 5. 請求の範囲第1項に記載の装置において、上記コントローラが上記電気干 渉信号の振幅を増大させる増幅器を有することを特徴とする装置。 6. 請求の範囲第1項に記載の装置において、上記コントローラが上記干渉波 と上記音響ノイズ波との同期のために上記電気干渉信号を遅延させる時間遅延素 子を有することを特徴とする装置。 7. 請求の範囲第1項に記載の装置において、上記コントローラが上記電気干 渉信号を修正する誤差センサ及び誤差コントローラを有することを特徴とする装 置。 8. 請求の範囲第1項に記載の装置において、上記センサを複数個設けたこと を特徴とする装置。 9. 請求の範囲第1項に記載の装置において、上記結合手段が電極を有するこ とを特徴とする装置。 10. 請求の範囲第1項に記載の装置において、上記結合手段が導電性ロッド を有することを特徴とする装置。 11. 請求の範囲第1項に記載の装置において、上記結合手段が上記排気ガス と同一線上に位置し、方位決めされたアンテナを有することを特徴とする装置。 12. 請求の範囲第1項に記載の装置において、上記装置が更に、 導電性で膨張可能なガス媒体を形成するためのプラズマ形成手段を有すること を特徴とする装置。 13. 請求の範囲第1項に記載の装置において、上記音響発生手段が電圧レベ ルの変化に応答してプラズマを膨張及び収縮させるように当該プラズマに供給さ れる可変電圧であることを特徴とする装置。 14. プラズマの如き電気的に導電性の膨張可能な媒体の近傍における音響ノ イズ波を相殺する装置において、 コンパートメントと; 上記コンパートメントに結合され、当該コンパートメント内にプラズマを形成 するためのプラズマ形成手段と; 上記音響ノイズ波を検出し、当該音響ノイズ波を表す電気ノイズ信号を発生さ せるセンサと; 上記センサに電気的に結合され、上記電気ノイズ信号に基づく電気干渉信号で あって、当該電気ノイズ信号から少なくとも位相反転される電気干渉信号を発生 させるコントローラと; 上記コントローラに電気的に結合され、上記電気干渉信号を上記電気的に導電 性のプラズマへ供給するプラズマ結合手段と; 上記電気干渉信号に関連し、上記電気的に導電性のプラズマが脈動干渉波を発 生させて上記音響ノイズ波を実質上相殺することを可能にさせる音響発生手段と ; を有することを特徴とする装置。 15. 請求の範囲第14項に記載の装置において、上記音響ノイズ波が上記コ ンパートメント内で上記プラズマ形成手段により発生されることを特徴とする装 置。 16. 請求の範囲第14項に記載の装置において、上記コンパートメントがガ スタービンエンジンであることを特徴とする装置。 17. 請求の範囲第14項に記載の装置において、上記プラズマ形成手段がガ スタービンエンジンであることを特徴とする装置。 18. 請求の範囲第14項に記載の装置において、上記コントローラが信号ア ナライザを有することを特徴とする装置。 19. 請求の範囲第14項に記載の装置において、上記コントローラが波形発 生器を有することを特徴とする装置。 20. 請求の範囲第14項に記載の装置において、上記コントローラが上記電 気干渉信号の振幅を増大させる増幅器を有することを特徴とする装置。 21. 請求の範囲第14項に記載の装置において、上記コントローラが上記干 渉波と上記音響ノイズ波との同期のために上記電気干渉信号を遅延させる時間遅 延素子を有することを特徴とする装置。 22. 請求の範囲第14項に記載の装置において、上記コントローラが誤差コ ントローラを有することを特徴とする装置。 23. 請求の範囲第14項に記載の装置において、上記センサを複数個設けた ことを特徴とする装置。 24. 請求の範囲第14項に記載の装置において、上記供給手段が電極を有す ることを特徴とする装置。 25. 請求の範囲第14項に記載の装置において、上記供給手段が導電性ロッ ドを有することを特徴とする装置。 26. 請求の範囲第14項に記載の装置において、上記音響発生手段が電圧レ ベルの変化に応答してプラズマを膨張及び収縮させるように当該プラズマに供給 される可変電圧であることを特徴とする装置。 27. プラズマの如き電気的に導電性の膨張可能な媒体の近傍における音響ノ イズ波を相殺する方法において、 (a) 上記音響ノイズ波を感知する工程と; (b) 上記音響ノイズ波を表す電気ノイズ信号を発生させる工程と; (c) 上記電気ノイズ信号に基づく電気干渉信号であって、当該電気ノイズ 信号から少なくとも位相反転される電気干渉信号を発生させる工程と; (d) 上記電気干渉信号を上記電気的に導電性のプラズマへ供給する工程と ; (e) 上記電気的に導電性のプラズマに干渉波を発生させて上記音響ノイズ 波を実質上相殺する工程と; を有することを特徴とする方法。 28. 請求の範囲第27項に記載の方法において、プラズマを形成する工程を 更に有することを特徴とする方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/814,717 | 1997-03-07 | ||
US08/814,717 US5966452A (en) | 1997-03-07 | 1997-03-07 | Sound reduction method and system for jet engines |
PCT/US1998/004507 WO1998039209A2 (en) | 1997-03-07 | 1998-03-06 | Sound reduction method and system for jet engines |
Publications (1)
Publication Number | Publication Date |
---|---|
JP2001518160A true JP2001518160A (ja) | 2001-10-09 |
Family
ID=25215810
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP53889398A Ceased JP2001518160A (ja) | 1997-03-07 | 1998-03-06 | ジェットエンジンのための騒音減少方法及び装置 |
Country Status (9)
Country | Link |
---|---|
US (1) | US5966452A (ja) |
EP (1) | EP1016070A2 (ja) |
JP (1) | JP2001518160A (ja) |
CN (1) | CN1251981A (ja) |
AU (1) | AU6545598A (ja) |
BR (1) | BR9808834A (ja) |
CA (1) | CA2282744A1 (ja) |
RU (1) | RU2188613C2 (ja) |
WO (1) | WO1998039209A2 (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2008139011A (ja) * | 2006-11-30 | 2008-06-19 | General Electric Co <Ge> | 上流プラズマ遮蔽式フィルム冷却 |
JP2008139012A (ja) * | 2006-11-30 | 2008-06-19 | General Electric Co <Ge> | 下流プラズマ遮蔽式フィルム冷却 |
JP2011503418A (ja) * | 2007-11-07 | 2011-01-27 | エアバス | 乱流エアジェット内の渦構造を制御する装置と方法 |
JP2012246808A (ja) * | 2011-05-26 | 2012-12-13 | Ihi Corp | ファン騒音低減装置 |
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US8737634B2 (en) | 2011-03-18 | 2014-05-27 | The United States Of America As Represented By The Secretary Of The Navy | Wide area noise cancellation system and method |
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US10344711B2 (en) * | 2016-01-11 | 2019-07-09 | Rolls-Royce Corporation | System and method of alleviating blade flutter |
US10184371B2 (en) * | 2016-04-20 | 2019-01-22 | General Electric Company | Active noise cancelation systems and devices |
GB201615702D0 (en) * | 2016-09-15 | 2016-11-02 | Gilligan Paul | Plasma speaker |
US10465539B2 (en) * | 2017-08-04 | 2019-11-05 | Pratt & Whitney Canada Corp. | Rotor casing |
CN111637622A (zh) * | 2020-06-09 | 2020-09-08 | 苏州逸新和电子有限公司 | 一种空调系统用消音器 |
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1997
- 1997-03-07 US US08/814,717 patent/US5966452A/en not_active Expired - Fee Related
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1998
- 1998-03-06 RU RU99120989/28A patent/RU2188613C2/ru active
- 1998-03-06 BR BR9808834-3A patent/BR9808834A/pt unknown
- 1998-03-06 CN CN98804127A patent/CN1251981A/zh active Pending
- 1998-03-06 AU AU65455/98A patent/AU6545598A/en not_active Abandoned
- 1998-03-06 CA CA002282744A patent/CA2282744A1/en not_active Abandoned
- 1998-03-06 JP JP53889398A patent/JP2001518160A/ja not_active Ceased
- 1998-03-06 WO PCT/US1998/004507 patent/WO1998039209A2/en not_active Application Discontinuation
- 1998-03-06 EP EP98911517A patent/EP1016070A2/en not_active Withdrawn
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2008139011A (ja) * | 2006-11-30 | 2008-06-19 | General Electric Co <Ge> | 上流プラズマ遮蔽式フィルム冷却 |
JP2008139012A (ja) * | 2006-11-30 | 2008-06-19 | General Electric Co <Ge> | 下流プラズマ遮蔽式フィルム冷却 |
JP2011503418A (ja) * | 2007-11-07 | 2011-01-27 | エアバス | 乱流エアジェット内の渦構造を制御する装置と方法 |
JP2012246808A (ja) * | 2011-05-26 | 2012-12-13 | Ihi Corp | ファン騒音低減装置 |
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WO1998039209A9 (en) | 1999-04-08 |
RU2188613C2 (ru) | 2002-09-10 |
US5966452A (en) | 1999-10-12 |
CN1251981A (zh) | 2000-05-03 |
WO1998039209A2 (en) | 1998-09-11 |
CA2282744A1 (en) | 1998-09-11 |
AU6545598A (en) | 1998-09-22 |
WO1998039209A3 (en) | 1999-02-18 |
BR9808834A (pt) | 2000-09-05 |
EP1016070A2 (en) | 2000-07-05 |
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