IT1182769B - PROCEDURE AND APPARATUS TO REDUCE VIBRATIONS IN HELICOPTER FUSELAGES - Google Patents

PROCEDURE AND APPARATUS TO REDUCE VIBRATIONS IN HELICOPTER FUSELAGES

Info

Publication number
IT1182769B
IT1182769B IT48290/85A IT4829085A IT1182769B IT 1182769 B IT1182769 B IT 1182769B IT 48290/85 A IT48290/85 A IT 48290/85A IT 4829085 A IT4829085 A IT 4829085A IT 1182769 B IT1182769 B IT 1182769B
Authority
IT
Italy
Prior art keywords
procedure
reduce vibrations
fuselages
helicopter
helicopter fuselages
Prior art date
Application number
IT48290/85A
Other languages
Italian (it)
Other versions
IT8548290A0 (en
Inventor
Stephen Peter King
Christopher Ian Hughes
Original Assignee
Westland Plc
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 Westland Plc filed Critical Westland Plc
Publication of IT8548290A0 publication Critical patent/IT8548290A0/en
Application granted granted Critical
Publication of IT1182769B publication Critical patent/IT1182769B/en

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
    • F16F15/02—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
    • 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

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)
IT48290/85A 1984-06-29 1985-06-27 PROCEDURE AND APPARATUS TO REDUCE VIBRATIONS IN HELICOPTER FUSELAGES IT1182769B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8416679 1984-06-29

Publications (2)

Publication Number Publication Date
IT8548290A0 IT8548290A0 (en) 1985-06-27
IT1182769B true IT1182769B (en) 1987-10-05

Family

ID=10563212

Family Applications (1)

Application Number Title Priority Date Filing Date
IT48290/85A IT1182769B (en) 1984-06-29 1985-06-27 PROCEDURE AND APPARATUS TO REDUCE VIBRATIONS IN HELICOPTER FUSELAGES

Country Status (5)

Country Link
DE (1) DE3522662A1 (en)
FR (1) FR2566862B1 (en)
GB (1) GB2160840B (en)
IT (1) IT1182769B (en)
SG (1) SG76488G (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2680848B1 (en) * 1991-08-29 1995-03-17 Aerospatiale Ste Nat Indle METHOD AND DEVICE FOR FILTERING THE VIBRATORY EXCITATIONS TRANSMITTED BETWEEN TWO PARTS, IN PARTICULAR BETWEEN THE ROTOR AND THE FUSELAGE OF A HELICOPTER.
GB9124081D0 (en) * 1991-11-13 1992-09-23 Westland Helicopters Strut assemblies
GB2267470B (en) * 1992-06-03 1995-12-13 Westland Helicopters Method and apparatus for in-flight shake testing of an aircraft fuselage
GB9211719D0 (en) * 1992-06-03 1992-07-15 Westland Helicopters Method & apparatus for in-flight shake testing of an aircraft fuselage
FR2731405B1 (en) * 1995-03-10 1997-05-09 Eurocopter France SYSTEM FOR MINIMIZING DYNAMIC EXCITATION OF A HELICOPTER
FR2749901B1 (en) * 1996-06-12 2000-12-08 Eurocopter France DEVICE FOR REDUCING THE VIBRATION GENERATED BY A LIFT ROTOR OF A TURNED AIRCRAFT
DE10001159A1 (en) * 2000-01-13 2001-07-26 Liebherr Aerospace Gmbh Vibration insulator for helicopter; has two force conduction points connected by insulator that generates dynamic counter oscillations, which are transmitted by spring system
DE10304336B4 (en) * 2003-02-03 2011-02-24 Eurocopter Deutschland Gmbh A method for damping tail boom vibrations of rotary-wing aircraft and rotary-wing aircraft with a tail boom vibration damping device
FR2975668B1 (en) 2011-05-27 2013-07-05 Eurocopter France METHOD AND AIRCRAFT PROVIDED WITH DEVICE FOR VIBRATION REDUCTION
GB2492965B (en) * 2011-07-15 2018-05-02 Agustawestland Ltd A system and method for reducing the transmission of vibration from a first vibrating body to a second body
WO2016057215A1 (en) 2014-09-26 2016-04-14 Sikorsky Aircraft Corporation Anti-vibration moment generating aircraft actuation system
FR3040691A1 (en) 2015-09-08 2017-03-10 Airbus Helicopters AIRCRAFT AND AIRCRAFT ENGINEERING GROUP

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3144082A (en) * 1962-11-13 1964-08-11 Hughes Tool Co Vibration damping mechanism
US3216679A (en) * 1963-02-06 1965-11-09 Mechanical Tech Inc Active vibration isolator
FR1506385A (en) * 1966-09-16 1967-12-22 Sud Aviation Method of attenuation and electro-hydraulic vibration attenuator for rotary wing aerodyne
US3514054A (en) * 1967-06-05 1970-05-26 United Aircraft Corp Vibration isolation system
US3701499A (en) * 1968-04-08 1972-10-31 Wright Barry Corp Active fluid isolation system
US3606233A (en) * 1968-04-22 1971-09-20 Bolt Beranek & Newman Vibration isolation system
US3635427A (en) * 1969-05-06 1972-01-18 Textron Inc Aircraft vibration compensation system
US3638885A (en) * 1970-03-09 1972-02-01 Boeing Co Lag frequency selective damper
US3635429A (en) * 1970-03-27 1972-01-18 Textron Inc Aircraft vibration compensation system
US3617020A (en) * 1970-04-27 1971-11-02 Boeing Co Vibration control system
JPS5638438B1 (en) * 1971-03-08 1981-09-07
US3845917A (en) * 1971-10-18 1974-11-05 Textron Inc Helicopter vibration isolation
JPS5511954A (en) * 1978-07-14 1980-01-28 Hitachi Ltd Method and device for controlling vibration of vehicle
US4199989A (en) * 1978-09-18 1980-04-29 Hughes Aircraft Company Cold damping of mechanical structures
EP0067548A1 (en) * 1981-06-02 1982-12-22 M.L. Aviation Company Limited Vibration suppressor
US4453378A (en) * 1982-04-19 1984-06-12 Chandler Evans, Inc. Torsional mode suppressor
US4600863A (en) * 1982-04-19 1986-07-15 Sound Attenuators Limited Method of and apparatus for active vibration isolation
GB2149473B (en) * 1983-11-08 1987-03-11 Lucas Ind Plc Actuator system

Also Published As

Publication number Publication date
SG76488G (en) 1990-07-06
DE3522662A1 (en) 1986-01-09
FR2566862B1 (en) 1987-11-27
FR2566862A1 (en) 1986-01-03
IT8548290A0 (en) 1985-06-27
GB8515295D0 (en) 1985-07-17
GB2160840A (en) 1986-01-02
GB2160840B (en) 1987-12-02

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Legal Events

Date Code Title Description
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19970628