ATE298397T1 - Dämpfervorrichtung mit magnetischen partikeln - Google Patents

Dämpfervorrichtung mit magnetischen partikeln

Info

Publication number
ATE298397T1
ATE298397T1 AT98914626T AT98914626T ATE298397T1 AT E298397 T1 ATE298397 T1 AT E298397T1 AT 98914626 T AT98914626 T AT 98914626T AT 98914626 T AT98914626 T AT 98914626T AT E298397 T1 ATE298397 T1 AT E298397T1
Authority
AT
Austria
Prior art keywords
conductors
magnetic
magnetic particles
yoke member
blade
Prior art date
Application number
AT98914626T
Other languages
English (en)
Inventor
Ashok K Agnihotri
Stanley G Sadler
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
Priority claimed from US08/842,340 external-priority patent/US5984056A/en
Application filed by Bell Helicopter Textron Inc filed Critical Bell Helicopter Textron Inc
Application granted granted Critical
Publication of ATE298397T1 publication Critical patent/ATE298397T1/de

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C27/00—Rotorcraft; Rotors peculiar thereto
    • B64C27/51—Damping of blade movements
    • 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
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F16F15/03—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using magnetic or electromagnetic means
    • 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
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/53—Means for adjusting damping characteristics by varying fluid viscosity, e.g. electromagnetically
    • F16F9/535—Magnetorheological [MR] fluid dampers

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Electromagnetism (AREA)
  • Acoustics & Sound (AREA)
  • Vibration Prevention Devices (AREA)
  • Soft Magnetic Materials (AREA)
  • Magnetic Treatment Devices (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
  • Hard Magnetic Materials (AREA)
  • Magnetic Bearings And Hydrostatic Bearings (AREA)
  • Fluid-Damping Devices (AREA)
  • Vehicle Body Suspensions (AREA)
  • Magnetically Actuated Valves (AREA)
AT98914626T 1997-04-24 1998-04-09 Dämpfervorrichtung mit magnetischen partikeln ATE298397T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/842,340 US5984056A (en) 1997-04-24 1997-04-24 Magnetic particle damper apparatus
PCT/US1998/007056 WO1998048195A2 (en) 1997-04-24 1998-04-09 Magnetic particle damper apparatus

Publications (1)

Publication Number Publication Date
ATE298397T1 true ATE298397T1 (de) 2005-07-15

Family

ID=34711930

Family Applications (1)

Application Number Title Priority Date Filing Date
AT98914626T ATE298397T1 (de) 1997-04-24 1998-04-09 Dämpfervorrichtung mit magnetischen partikeln

Country Status (4)

Country Link
EP (1) EP1566563B1 (de)
AT (1) ATE298397T1 (de)
DE (2) DE69838495T2 (de)
HK (1) HK1026934A1 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007140362A2 (en) 2006-05-26 2007-12-06 Lord Corporation Rotary wing aircraft rotary lead lag damper
KR101546423B1 (ko) 2007-09-04 2015-08-21 로오드 코포레이션 헬리콥터 항공기의 로터 댐퍼
DE102009034297A1 (de) 2009-07-21 2011-02-03 Inventus Engineering Gmbh Einstellbares Ventil mit Übergangsbereich
DE102009034296A1 (de) * 2009-07-21 2011-02-03 Dt Swiss Ag Dämpfereinrichtung für ein Zweirad
US9260185B2 (en) * 2012-01-25 2016-02-16 Textron Innovations Inc. System and method of harvesting power with a rotor hub damper
CN114439876B (zh) * 2022-01-14 2023-05-16 清华大学 一种摩擦起电磁性液体阻尼减振器

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5610844A (en) * 1979-07-02 1981-02-03 Toyota Motor Corp Feedback control system vibration absorbing suspension
JPS5899532A (ja) * 1981-12-07 1983-06-13 Nissan Motor Co Ltd シヨツクアブソ−バ
FR2584996B1 (fr) * 1985-07-22 1987-11-13 Aerospatiale Mat-moyeu integre et tete de rotor de giravion le comportant
US5573088A (en) * 1994-05-10 1996-11-12 Daniels; John J. Controllable resistance device and force dampener, and vehicle utilizing the same

Also Published As

Publication number Publication date
EP1566563B1 (de) 2007-09-26
HK1026934A1 (en) 2000-12-29
DE69830655D1 (de) 2005-07-28
DE69830655T2 (de) 2006-05-11
DE69838495D1 (de) 2007-11-08
DE69838495T2 (de) 2008-06-26
EP1566563A1 (de) 2005-08-24

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Legal Events

Date Code Title Description
RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties