FR2776815B1 - Installation pour supprimer les bruits emis par des pieces notamment destinee a une structure portante et en particulier une entretoise de la transmission principale d'un helicoptere - Google Patents
Installation pour supprimer les bruits emis par des pieces notamment destinee a une structure portante et en particulier une entretoise de la transmission principale d'un helicoptereInfo
- Publication number
- FR2776815B1 FR2776815B1 FR9903649A FR9903649A FR2776815B1 FR 2776815 B1 FR2776815 B1 FR 2776815B1 FR 9903649 A FR9903649 A FR 9903649A FR 9903649 A FR9903649 A FR 9903649A FR 2776815 B1 FR2776815 B1 FR 2776815B1
- Authority
- FR
- France
- Prior art keywords
- helicopter
- spacer
- installation
- supporting structure
- main transmission
- 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 - Fee Related
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/005—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion using electro- or magnetostrictive actuation means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C27/00—Rotorcraft; Rotors peculiar thereto
- B64C27/001—Vibration damping devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C27/00—Rotorcraft; Rotors peculiar thereto
- B64C27/001—Vibration damping devices
- B64C2027/002—Vibration damping devices mounted between the rotor drive and the fuselage
-
- 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
- G10K2210/121—Rotating machines, e.g. engines, turbines, motors; Periodic or quasi-periodic signals in general
-
- 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
- G10K2210/10—Applications
- G10K2210/129—Vibration, e.g. instead of, or in addition to, acoustic noise
- G10K2210/1291—Anti-Vibration-Control, e.g. reducing vibrations in panels or beams
-
- 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
- G10K2210/3229—Transducers
- G10K2210/32291—Plates or thin films, e.g. PVDF
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Vibration Prevention Devices (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Golf Clubs (AREA)
- Electrophonic Musical Instruments (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19813959A DE19813959B4 (de) | 1998-03-28 | 1998-03-28 | Einrichtung zur Körperschallunterdrückung |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2776815A1 FR2776815A1 (fr) | 1999-10-01 |
FR2776815B1 true FR2776815B1 (fr) | 2000-11-10 |
Family
ID=7862814
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR9903649A Expired - Fee Related FR2776815B1 (fr) | 1998-03-28 | 1999-03-24 | Installation pour supprimer les bruits emis par des pieces notamment destinee a une structure portante et en particulier une entretoise de la transmission principale d'un helicoptere |
Country Status (4)
Country | Link |
---|---|
US (1) | US6480609B1 (fr) |
DE (1) | DE19813959B4 (fr) |
FR (1) | FR2776815B1 (fr) |
IT (1) | IT1309646B1 (fr) |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10139686B4 (de) * | 2000-10-05 | 2007-02-01 | Eads Deutschland Gmbh | Piezoelektrischer Dehnungsaktuator |
US6564640B1 (en) | 2000-11-28 | 2003-05-20 | Quality Research, Development & Consulting, Inc. | Smart skin structures |
DE10154391A1 (de) * | 2001-11-06 | 2003-05-22 | Eurocopter Deutschland | Vorrichtung und Verfahren zur Schwingungsisolation in einem Übertragungspfad |
DE10246218B4 (de) * | 2002-10-04 | 2014-12-24 | Technische Universität Darmstadt | Rotierendes Bauelement mit einer Anordnung zur Reduzierung von Schwingungen |
DE10355624A1 (de) * | 2003-11-28 | 2005-07-07 | Volkswagen Ag | Vorrichtung zur Dämpfung von Schwingungen an einer Fahrzeug- oder Maschinenkomponente |
DE10358200B4 (de) * | 2003-12-12 | 2010-06-24 | Eurocopter Deutschland Gmbh | Stabförmiges, hochbelastbares, aktives Verbindungselement sowie Drehflügelflugzeug mit einem solchen Verbindungselement |
DE102004002519B3 (de) * | 2004-01-17 | 2005-01-13 | Benteler Automobiltechnik Gmbh | Instrumententräger |
US7118328B2 (en) * | 2004-03-12 | 2006-10-10 | Sikorsky Aircraft Corporation | Gearbox mounted force generator |
US7448854B2 (en) * | 2004-08-30 | 2008-11-11 | Lord Corporation | Helicopter vibration control system and rotary force generator for canceling vibrations |
US8162606B2 (en) | 2004-08-30 | 2012-04-24 | Lord Corporation | Helicopter hub mounted vibration control and circular force generation systems for canceling vibrations |
US7722322B2 (en) | 2004-08-30 | 2010-05-25 | Lord Corporation | Computer system and program product for controlling vibrations |
US8267652B2 (en) | 2004-08-30 | 2012-09-18 | Lord Corporation | Helicopter hub mounted vibration control and circular force generation systems for canceling vibrations |
US8435002B2 (en) * | 2004-08-30 | 2013-05-07 | Lord Corporation | Helicopter vibration control system and rotating assembly rotary forces generators for canceling vibrations |
DE502006001035D1 (de) * | 2005-01-18 | 2008-08-21 | Airbus Gmbh | Strukturelement für ein Flugzeug |
WO2008060681A2 (fr) * | 2006-05-06 | 2008-05-22 | Lord Corporation | Bras profilé axial d'isolateur d'hélicoptère à vibration réduite |
KR101486721B1 (ko) | 2007-10-25 | 2015-01-28 | 로드코포레이션 | 분배 능동형 진동 제어 시스템 및 진동이 억제된 회전익 항공기 |
EP2241502B1 (fr) * | 2009-04-13 | 2017-03-08 | Sikorsky Aircraft Corporation | Suppression des vibrations actives par minimisation de la puissance |
DE102010042223B4 (de) * | 2010-10-08 | 2018-02-01 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Drehmomenterzeugungsvorrichtung |
KR101911000B1 (ko) | 2011-02-04 | 2018-10-23 | 로오드 코포레이션 | 공진 관성형 액추에이터를 구비한 회전익 항공기 진동 제어 시스템 |
DE102013011259A1 (de) * | 2013-07-05 | 2015-01-08 | Airbus Defence and Space GmbH | Schraubenlinienförmiger Aktuator für einen Rotor eines Luftfahrzeugs |
DE102014101732A1 (de) * | 2014-02-12 | 2015-08-13 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Schallreduktionssystem für Flugzeuge |
EP2930395B1 (fr) | 2014-04-08 | 2020-03-04 | Airbus Defence and Space GmbH | Système de réduction du bruit, procédé et hélicoptère |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3900748A (en) * | 1972-01-31 | 1975-08-19 | Zenith Radio Corp | Torsional ceramic transducer |
US4868447A (en) * | 1987-09-11 | 1989-09-19 | Cornell Research Foundation, Inc. | Piezoelectric polymer laminates for torsional and bending modal control |
GB2222657B (en) * | 1988-09-09 | 1992-10-07 | Topexpress Ltd | Active control of vibration |
DE4033089C1 (en) * | 1990-10-18 | 1992-03-12 | Messerschmitt-Boelkow-Blohm Gmbh, 8012 Ottobrunn, De | Torsion element for electrostrictive rod or band - uses electrostrictive fibres each with electrically conductive core and piezoelectric outer coating |
JPH0552572A (ja) * | 1991-08-28 | 1993-03-02 | Akai Electric Co Ltd | 振動子の支持構造 |
GB9217129D0 (en) * | 1992-08-13 | 1992-09-23 | Secr Defence | Vibration reduction |
DE4230800A1 (de) * | 1992-09-15 | 1994-03-17 | Freudenberg Carl Fa | Aktives Stellelement |
US5424596A (en) * | 1992-10-05 | 1995-06-13 | Trw Inc. | Activated structure |
US5378974A (en) * | 1993-07-02 | 1995-01-03 | The United States Of America As Represented By The Secretary Of The Air Force | Vibration damping system |
US5645260A (en) * | 1995-05-15 | 1997-07-08 | The Aerospace Corporation | Active piezo-electric vibration isolation and directional bracket |
DE19642827B4 (de) * | 1996-03-29 | 2005-06-23 | Zf Sachs Ag | Aktuator zur Schwingungsbedämpfung |
US6002778A (en) * | 1996-08-07 | 1999-12-14 | Lord Corporation | Active structural control system and method including active vibration absorbers (AVAS) |
US5919029A (en) * | 1996-11-15 | 1999-07-06 | Northrop Grumman Corporation | Noise absorption system having active acoustic liner |
JP2892632B2 (ja) * | 1997-03-24 | 1999-05-17 | 株式会社コミュータヘリコプタ先進技術研究所 | 捩りアクチュエータおよびフラップ駆動装置 |
US6138947A (en) | 1997-08-22 | 2000-10-31 | Sikorsky Aircraft Corporation | Active noise control system for a defined volume |
US6105900A (en) | 1997-12-23 | 2000-08-22 | Sikorsky Aircraft Corporation | Active noise control system for a helicopter gearbox mount |
US6229898B1 (en) * | 1998-12-23 | 2001-05-08 | Sikorsky Aircraft Corporation | Active vibration control system using on-line system identification with enhanced noise reduction |
-
1998
- 1998-03-28 DE DE19813959A patent/DE19813959B4/de not_active Expired - Fee Related
-
1999
- 1999-02-26 IT IT1999MI000398A patent/IT1309646B1/it active
- 1999-03-24 FR FR9903649A patent/FR2776815B1/fr not_active Expired - Fee Related
- 1999-03-26 US US09/277,483 patent/US6480609B1/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE19813959B4 (de) | 2009-05-14 |
US6480609B1 (en) | 2002-11-12 |
FR2776815A1 (fr) | 1999-10-01 |
IT1309646B1 (it) | 2002-01-30 |
ITMI990398A1 (it) | 2000-08-26 |
DE19813959A1 (de) | 1999-09-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |
Effective date: 20121130 |