IN2009KN03822A - - Google Patents

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Publication number
IN2009KN03822A
IN2009KN03822A IN3822KON2009A IN2009KN03822A IN 2009KN03822 A IN2009KN03822 A IN 2009KN03822A IN 3822KON2009 A IN3822KON2009 A IN 3822KON2009A IN 2009KN03822 A IN2009KN03822 A IN 2009KN03822A
Authority
IN
India
Prior art keywords
weight
hub
aircraft
rotation
axis
Prior art date
Application number
Other languages
English (en)
Inventor
Richard E Rauber
David A Popelka
Frank B Stamps
Original Assignee
Bell Helicopter Textron Inc
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 Bell Helicopter Textron Inc filed Critical Bell Helicopter Textron Inc
Publication of IN2009KN03822A publication Critical patent/IN2009KN03822A/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C27/00—Rotorcraft; Rotors peculiar thereto
    • B64C27/32—Rotors
    • 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
    • B06B1/10—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of mechanical energy
    • B06B1/16—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of mechanical energy operating with systems involving rotary unbalanced masses
    • B06B1/161—Adjustable systems, i.e. where amplitude or direction of frequency of vibration can be varied
    • B06B1/162—Making use of masses with adjustable amount of eccentricity
    • B06B1/164—Making use of masses with adjustable amount of eccentricity the amount of eccentricity being automatically variable as a function of the running condition, e.g. speed, direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C27/00—Rotorcraft; Rotors peculiar thereto
    • B64C27/001—Vibration damping devices
    • 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
    • F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
    • F16F15/14—Suppression of vibrations in rotating systems by making use of members moving with the system using masses freely rotating with the system, i.e. uninvolved in transmitting driveline torque, e.g. rotative dynamic dampers
    • 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
    • F16F7/00—Vibration-dampers; Shock-absorbers
    • F16F7/10—Vibration-dampers; Shock-absorbers using inertia effect
    • F16F7/1005—Vibration-dampers; Shock-absorbers using inertia effect characterised by active control of the mass
    • F16F7/1011—Vibration-dampers; Shock-absorbers using inertia effect characterised by active control of the mass by electromagnetic means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C27/00—Rotorcraft; Rotors peculiar thereto
    • B64C27/001—Vibration damping devices
    • B64C2027/003—Vibration damping devices mounted on rotor hub, e.g. a rotary force generator
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C27/00—Rotorcraft; Rotors peculiar thereto
    • B64C27/001—Vibration damping devices
    • B64C2027/004—Vibration damping devices using actuators, e.g. active systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Electromagnetism (AREA)
  • Vibration Prevention Devices (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Centrifugal Separators (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
IN3822KON2009 2007-04-24 2007-04-24 IN2009KN03822A (enExample)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2007/010109 WO2008133614A1 (en) 2007-04-24 2007-04-24 Rotor hub vibration attenuator

Publications (1)

Publication Number Publication Date
IN2009KN03822A true IN2009KN03822A (enExample) 2015-10-09

Family

ID=39925938

Family Applications (1)

Application Number Title Priority Date Filing Date
IN3822KON2009 IN2009KN03822A (enExample) 2007-04-24 2007-04-24

Country Status (7)

Country Link
US (1) US8424799B2 (enExample)
EP (1) EP2150460B1 (enExample)
CN (1) CN101674982B (enExample)
CA (1) CA2685025C (enExample)
DE (1) DE07861293T1 (enExample)
IN (1) IN2009KN03822A (enExample)
WO (1) WO2008133614A1 (enExample)

Families Citing this family (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8435002B2 (en) * 2004-08-30 2013-05-07 Lord Corporation Helicopter vibration control system and rotating assembly rotary forces generators 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
US8162606B2 (en) 2004-08-30 2012-04-24 Lord Corporation Helicopter hub mounted vibration control and circular force generation systems for canceling vibrations
US7448854B2 (en) 2004-08-30 2008-11-11 Lord Corporation Helicopter vibration control system and rotary force generator for canceling vibrations
US7722322B2 (en) 2004-08-30 2010-05-25 Lord Corporation Computer system and program product for controlling vibrations
EP2572983B1 (en) 2007-10-25 2015-03-04 Lord Corporation Distributed active vibration control systems
CN102588504B (zh) * 2012-02-02 2014-11-12 哈尔滨飞机工业集团有限责任公司 一种直升机用动力吸振器
US10407157B2 (en) * 2013-03-14 2019-09-10 Bell Helicopter Textron Inc. Spinner fairing assembly
US20150097074A1 (en) * 2013-10-03 2015-04-09 Sikorsky Aircraft Corporation Dual-frequency active vibration control
CN104494823B (zh) * 2013-11-22 2016-05-25 北京航空航天大学 一种基于环路结构的新型减振旋翼
US10543910B2 (en) * 2014-01-15 2020-01-28 Lord Corporation Hub-based active vibration control systems, devices, and methods with offset imbalanced rotors
US10538315B2 (en) 2014-11-19 2020-01-21 Sikorsky Aircraft Corporation Method of balancing a main rotor hub
EP3233308B1 (en) * 2014-12-16 2023-09-20 Sikorsky Aircraft Corporation Variable amplitude force generator
US11186363B2 (en) 2015-10-21 2021-11-30 Sikorsky Aircraft Corporation Electric propulsion system for a rotary wing aircraft
USD808328S1 (en) 2016-09-14 2018-01-23 Bell Helicopter Textron Inc. Foldable tiltrotor aircraft
US10752343B2 (en) * 2016-10-18 2020-08-25 Sikorsky Aircraft Corporation Electric propulsion system for a rotary wing aircraft
US10577090B2 (en) 2017-02-16 2020-03-03 Sikorsky Aircraft Corporation Electric propulsion system with overrunning clutch for a rotary-wing aircraft
US11555528B2 (en) 2017-04-04 2023-01-17 Moog Inc. Variable rotary mass vibration suppression system
EP3645388A1 (en) 2017-06-27 2020-05-06 Moog Inc. Variable rotary radially supported mass vibration suppression system
CA3068426A1 (en) * 2017-06-27 2019-01-03 Moog Inc. Variable rotary pendulous mass vibration suppression system
US10457380B2 (en) * 2017-06-28 2019-10-29 Bell Textron Inc. Articulated rotor systems with pitch independent damping
US10676182B2 (en) * 2017-07-20 2020-06-09 Sikorsky Aircraft Corporation Tilting coaxial rotor for a rotary wing aircraft
US10974824B2 (en) 2017-07-20 2021-04-13 Sikorsky Aircraft Corporation Electric powered direct drive rotor motor
EP3476728B1 (en) * 2017-10-31 2019-12-25 LEONARDO S.p.A. Rotor for a hover-capable aircraft and method for containment of vibrations transmitted to the mast of a rotor of a hover-capable aircraft
PL3480490T3 (pl) * 2017-11-02 2021-07-05 Soletanche Freyssinet Urządzenie do tłumienia drgań konstrukcji i zastosowanie tego urządzenia
US10648529B2 (en) * 2017-11-21 2020-05-12 Bell Helicopter Textron Inc. Hydraulic vibration control
US10407166B2 (en) 2018-01-08 2019-09-10 Sikorsky Aircraft Corporation Yaw moment supplement for directional control
EP3533710B1 (en) * 2018-02-28 2021-01-27 AIRBUS HELICOPTERS DEUTSCHLAND GmbH A passive pitch angle adjustment apparatus
US10597150B2 (en) 2018-04-24 2020-03-24 Textron Innovations Inc. Articulated rotor systems with blade-to-blade damping
US10933984B2 (en) 2018-07-13 2021-03-02 Textron Innovations Inc. Hub mounted vibration reduction system for coaxial rotor systems
CN109774919A (zh) * 2018-11-06 2019-05-21 珠海隆华直升机科技有限公司 大力矩拉杆传动系统及直升机
USD909278S1 (en) 2018-11-15 2021-02-02 Bell Helicopter Textron Inc. Foldable tiltrotor aircraft
USD974276S1 (en) * 2018-11-15 2023-01-03 Textron Innovations, Inc. Aircraft spinner
USD909949S1 (en) 2018-11-15 2021-02-09 Bell Helicopter Textron Inc. Tiltrotor aircraft
USD974277S1 (en) 2018-11-15 2023-01-03 Textron Innovations, Inc. Aircraft payload enclosure
EP3766779B1 (en) * 2019-07-19 2023-11-01 LEONARDO S.p.A. Rotor for a hover-capable aircraft
CN112389642A (zh) * 2020-10-30 2021-02-23 哈尔滨飞机工业集团有限责任公司 一种用于直升机减振的动力吸振器结构

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2425650A (en) * 1943-07-16 1947-08-12 Edward A Stalker Helicopter rotor with bladebalancing mechanism
US3219120A (en) 1964-12-31 1965-11-23 Boeing Co Vibration absorbing system
GB1120193A (en) * 1964-12-31 1968-07-17 Boeing Co Vibration absorbing device
US3617020A (en) * 1970-04-27 1971-11-02 Boeing Co Vibration control system
GB1465266A (en) * 1973-04-26 1977-02-23 Westland Aircraft Ltd Rotors for rotary wing aircraft
FR2416838A1 (fr) * 1978-02-10 1979-09-07 Aerospatiale Dispositif pour attenuer les vibrations d'un rotor de giravion
FR2733483B1 (fr) * 1995-04-27 1997-07-04 Eurocopter France Dispositif d'attenuation de vibrations pour rotor d'helicoptere
FR2749901B1 (fr) * 1996-06-12 2000-12-08 Eurocopter France Dispositif pour reduire les vibrations engendrees par un rotor de sustentation d'un aeronef a voilure tournante
US5825663A (en) * 1996-11-04 1998-10-20 Gec-Marconi Aerospace Inc. Vibration control system
US6139271A (en) * 1998-03-17 2000-10-31 Chadwick-Helmuth Company, Inc. Helicopter rotor blade weighting
US7958801B2 (en) * 2003-10-01 2011-06-14 Sikorsky Aircraft Corporation Harmonic force generator for an active vibration control system
US9046148B2 (en) * 2003-10-14 2015-06-02 Sikorsky Aircraft Corporation Active force generation system for minimizing vibration in a rotating system
US7448854B2 (en) * 2004-08-30 2008-11-11 Lord Corporation Helicopter vibration control system and rotary force generator for canceling vibrations

Also Published As

Publication number Publication date
CA2685025C (en) 2014-03-11
US20100209242A1 (en) 2010-08-19
CA2685025A1 (en) 2008-11-06
WO2008133614A1 (en) 2008-11-06
US8424799B2 (en) 2013-04-23
CN101674982B (zh) 2013-10-09
CN101674982A (zh) 2010-03-17
DE07861293T1 (de) 2011-01-27
EP2150460B1 (en) 2015-06-10
EP2150460A4 (en) 2013-02-27
EP2150460A1 (en) 2010-02-10

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