IL105236A - Active noise control system for helicopter - Google Patents

Active noise control system for helicopter

Info

Publication number
IL105236A
IL105236A IL10523693A IL10523693A IL105236A IL 105236 A IL105236 A IL 105236A IL 10523693 A IL10523693 A IL 10523693A IL 10523693 A IL10523693 A IL 10523693A IL 105236 A IL105236 A IL 105236A
Authority
IL
Israel
Prior art keywords
actuators
high frequency
control system
active noise
noise control
Prior art date
Application number
IL10523693A
Other languages
English (en)
Hebrew (he)
Original Assignee
United Technologies Corp
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 United Technologies Corp filed Critical United Technologies Corp
Publication of IL105236A publication Critical patent/IL105236A/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C27/00—Rotorcraft; Rotors peculiar thereto
    • 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
    • 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
    • B64C2220/00—Active noise reduction systems
    • 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
    • Y10T74/00—Machine element or mechanism
    • Y10T74/21—Elements
    • Y10T74/2186—Gear casings

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)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Catching Or Destruction (AREA)
  • Traffic Control Systems (AREA)
IL10523693A 1992-04-16 1993-03-31 Active noise control system for helicopter IL105236A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/870,434 US5310137A (en) 1992-04-16 1992-04-16 Helicopter active noise control system

Publications (1)

Publication Number Publication Date
IL105236A true IL105236A (en) 1996-10-31

Family

ID=25355362

Family Applications (1)

Application Number Title Priority Date Filing Date
IL10523693A IL105236A (en) 1992-04-16 1993-03-31 Active noise control system for helicopter

Country Status (10)

Country Link
US (1) US5310137A (ko)
EP (1) EP0636085B1 (ko)
JP (1) JPH07505843A (ko)
KR (1) KR100258023B1 (ko)
AU (1) AU663194B2 (ko)
CA (1) CA2132198C (ko)
DE (1) DE69305843T2 (ko)
ES (1) ES2095645T3 (ko)
IL (1) IL105236A (ko)
WO (1) WO1993021064A1 (ko)

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US5526292A (en) * 1994-11-30 1996-06-11 Lord Corporation Broadband noise and vibration reduction
US5713438A (en) * 1996-03-25 1998-02-03 Lord Corporation Method and apparatus for non-model based decentralized adaptive feedforward active vibration control
US5716300A (en) 1996-05-01 1998-02-10 Sikorsky Aircraft Corporation Isolated ring gear for planetary gear drive systems
US6002778A (en) * 1996-08-07 1999-12-14 Lord Corporation Active structural control system and method including active vibration absorbers (AVAS)
US5802184A (en) * 1996-08-15 1998-09-01 Lord Corporation Active noise and vibration control system
US6065742A (en) * 1996-09-13 2000-05-23 Lord Corporation Multi-directional tuned vibration absorber
US5845236A (en) * 1996-10-16 1998-12-01 Lord Corporation Hybrid active-passive noise and vibration control system for aircraft
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US5884736A (en) * 1997-03-31 1999-03-23 Virginia Tech Intellectual Properties, Inc. Active dual reaction mass absorber for vibration control
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US5974155A (en) * 1997-04-15 1999-10-26 The University Of Dayton System and method for actively damping boom noise
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US5924312A (en) * 1997-12-23 1999-07-20 Maytag Corporation Multiple direction vibration absorber
US6105900A (en) * 1997-12-23 2000-08-22 Sikorsky Aircraft Corporation Active noise control system for a helicopter gearbox mount
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US6158690A (en) * 1998-10-30 2000-12-12 Sikorsky Aircraft Corporation Cabin interior panel system for reducing noise transmission in an aircraft
US6229898B1 (en) 1998-12-23 2001-05-08 Sikorsky Aircraft Corporation Active vibration control system using on-line system identification with enhanced noise reduction
US6865466B2 (en) * 2000-04-27 2005-03-08 American Axle & Manufacturing, Inc. Active vibration cancellation of gear mesh vibration
US6832973B1 (en) 2000-07-21 2004-12-21 William A. Welsh System for active noise reduction
US6644590B2 (en) * 2000-09-15 2003-11-11 General Dynamics Advanced Information Systems, Inc. Active system and method for vibration and noise reduction
US6634862B2 (en) 2000-09-15 2003-10-21 General Dynamics Advanced Information Systems, Inc. Hydraulic actuator
US6416016B1 (en) 2000-09-15 2002-07-09 Sikorsky Aircraft Corporation Actuator for an active transmission mount isolation system
US6467723B1 (en) 2000-10-10 2002-10-22 Lord Corporation Active vibration control system for helicopter with improved actustor placement
US7190796B1 (en) 2000-11-06 2007-03-13 Design, Imaging & Control, Inc. Active feedback-controlled bass coloration abatement
US6493689B2 (en) 2000-12-29 2002-12-10 General Dynamics Advanced Technology Systems, Inc. Neural net controller for noise and vibration reduction
US7305094B2 (en) * 2001-01-12 2007-12-04 University Of Dayton System and method for actively damping boom noise in a vibro-acoustic enclosure
US6869375B2 (en) * 2001-02-27 2005-03-22 Sikorsky Aircraft Corporation High output force actuator for an active vibration control system
US6513753B1 (en) * 2001-08-14 2003-02-04 Sikorsky Aircraft Corporation Transmission support structure for a rotary wing aircraft
US7958801B2 (en) * 2003-10-01 2011-06-14 Sikorsky Aircraft Corporation Harmonic force generator for an active vibration control system
DE10361890B4 (de) * 2003-12-23 2007-03-29 Airbus Deutschland Gmbh Vorrichtung zum labormäßigen Testen von abgeschlossenen Teilkabinen für Verkehrsflugzeuge
US7296766B2 (en) * 2004-07-13 2007-11-20 Sikorsky Aircraft Corporation Lightweight structural damping assembly
US7722322B2 (en) * 2004-08-30 2010-05-25 Lord Corporation Computer system and program product for controlling vibrations
US8162606B2 (en) 2004-08-30 2012-04-24 Lord Corporation Helicopter hub mounted vibration control and circular force generation systems for canceling 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
CN101022994B (zh) 2004-08-30 2012-07-04 洛德公司 直升飞机振动控制系统和消除振动的旋转力发生器
GB0419512D0 (en) * 2004-09-02 2004-10-06 Avon Vibration Man Syst Ltd Controlling vibrations
KR101486721B1 (ko) * 2007-10-25 2015-01-28 로드코포레이션 분배 능동형 진동 제어 시스템 및 진동이 억제된 회전익 항공기
EP2071213B1 (en) * 2007-12-11 2014-12-03 General Electric Company Gearbox noise reduction by electrical drive control
US8403643B2 (en) 2008-03-20 2013-03-26 Sikorsky Aircraft Corporation Dual frequency hub mounted vibration suppressor system
US8800736B2 (en) * 2008-05-30 2014-08-12 Design, Imaging & Control, Inc. Adjustable tuned mass damper systems
DE102009032497B4 (de) 2009-07-09 2017-03-09 Airbus Defence and Space GmbH Abstimmung des Schalldämmmaßes durch verteilte Punktmassen
JP4823368B2 (ja) * 2010-02-26 2011-11-24 三菱重工業株式会社 振動低減装置および振動低減方法
FR2975668B1 (fr) 2011-05-27 2013-07-05 Eurocopter France Procede et aeronef muni d'un dispositif pour la reduction de vibrations
US9777788B2 (en) * 2012-01-10 2017-10-03 Bell Helicopter Textron Inc. Rotorcraft vibration suppression system in a four corner pylon mount configuration
US10293925B2 (en) * 2013-01-18 2019-05-21 Lord Corporation Systems and methods for implementing directional force weighting with circular force generators
DE102014101732A1 (de) * 2014-02-12 2015-08-13 Deutsches Zentrum für Luft- und Raumfahrt e.V. Schallreduktionssystem für Flugzeuge
US10745116B2 (en) 2014-08-07 2020-08-18 Sikorsky Aircraft Corporation Anti-vibration load generating aircraft actuation system
US20170341739A1 (en) * 2014-12-16 2017-11-30 Sikorsky Aircraft Corporation Variable amplitude force generator
US11932380B2 (en) * 2017-03-15 2024-03-19 Textron Innovations Inc. Vibration isolation systems for compound helicopters
US20180265186A1 (en) * 2017-03-15 2018-09-20 Bell Helicopter Textron Inc. Vibration Isolation Systems for Advancing Blade Concept Rotorcraft
EP3379529A1 (en) 2017-03-21 2018-09-26 RUAG Schweiz AG Active noise control system in an aircraft and method to reduce the noise in the aircraft
US10745098B2 (en) * 2017-09-05 2020-08-18 The Boeing Company Energy-absorbing under-floor airframe
US10994834B2 (en) * 2018-02-22 2021-05-04 Sikorsky Aircraft Corporation Case mounted transmission AVC force generators

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FR2584373B1 (fr) * 1985-07-03 1990-07-06 Aerospatiale Dispositif de suspension antiresonnante a six degres de liberte pour helicoptere
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FR2629545B1 (fr) * 1988-03-30 1993-02-19 Aerospatiale Contre-fiche elastique a resonateur hydro-mecanique integre notamment pour la suspension d'une boite de transmission sur un giravion et dispositif de suspension en comportant application
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FR2669982B1 (fr) * 1990-11-30 1993-02-19 Aerospatiale Dispositif de suspension anti-resonnante pour helicoptere.
US5154371A (en) * 1991-04-10 1992-10-13 United Technologies Corporation Main rotor assembly support truss

Also Published As

Publication number Publication date
US5310137A (en) 1994-05-10
WO1993021064A1 (en) 1993-10-28
EP0636085B1 (en) 1996-11-06
CA2132198C (en) 2000-01-25
JPH07505843A (ja) 1995-06-29
EP0636085A1 (en) 1995-02-01
KR950700843A (ko) 1995-02-20
KR100258023B1 (ko) 2000-06-01
AU4102993A (en) 1993-11-18
DE69305843D1 (de) 1996-12-12
ES2095645T3 (es) 1997-02-16
CA2132198A1 (en) 1993-10-28
DE69305843T2 (de) 1997-05-28
AU663194B2 (en) 1995-09-28

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