IT1309646B1 - Dispositivo per sopprimere vibrazioni acustiche via solido - Google Patents

Dispositivo per sopprimere vibrazioni acustiche via solido

Info

Publication number
IT1309646B1
IT1309646B1 IT1999MI000398A ITMI990398A IT1309646B1 IT 1309646 B1 IT1309646 B1 IT 1309646B1 IT 1999MI000398 A IT1999MI000398 A IT 1999MI000398A IT MI990398 A ITMI990398 A IT MI990398A IT 1309646 B1 IT1309646 B1 IT 1309646B1
Authority
IT
Italy
Prior art keywords
acoustic vibrations
via solid
vibrations via
suppress acoustic
suppress
Prior art date
Application number
IT1999MI000398A
Other languages
English (en)
Inventor
Henning Strehlow
Peter Janker
Rudolf Maier
Original Assignee
Eurocopter Deutschland
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Eurocopter Deutschland filed Critical Eurocopter Deutschland
Publication of ITMI990398A1 publication Critical patent/ITMI990398A1/it
Application granted granted Critical
Publication of IT1309646B1 publication Critical patent/IT1309646B1/it

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
IT1999MI000398A 1998-03-28 1999-02-26 Dispositivo per sopprimere vibrazioni acustiche via solido IT1309646B1 (it)

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
ITMI990398A1 ITMI990398A1 (it) 2000-08-26
IT1309646B1 true IT1309646B1 (it) 2002-01-30

Family

ID=7862814

Family Applications (1)

Application Number Title Priority Date Filing Date
IT1999MI000398A IT1309646B1 (it) 1998-03-28 1999-02-26 Dispositivo per sopprimere vibrazioni acustiche via solido

Country Status (4)

Country Link
US (1) US6480609B1 (it)
DE (1) DE19813959B4 (it)
FR (1) FR2776815B1 (it)
IT (1) IT1309646B1 (it)

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* Cited by examiner, † Cited by third party
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 (en) * 2006-05-06 2008-05-22 Lord Corporation Helicopter reduced vibration isolator axial support strut
KR101486721B1 (ko) 2007-10-25 2015-01-28 로드코포레이션 분배 능동형 진동 제어 시스템 및 진동이 억제된 회전익 항공기
EP2241502B1 (en) * 2009-04-13 2017-03-08 Sikorsky Aircraft Corporation Active vibration suppression via power minimization
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 (en) 2014-04-08 2020-03-04 Airbus Defence and Space GmbH A noise reduction system, a method and a helicopter

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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

Also Published As

Publication number Publication date
DE19813959B4 (de) 2009-05-14
FR2776815B1 (fr) 2000-11-10
US6480609B1 (en) 2002-11-12
FR2776815A1 (fr) 1999-10-01
ITMI990398A1 (it) 2000-08-26
DE19813959A1 (de) 1999-09-30

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