IT1081094B - Ammortizzatore idraulico con tenute eccedenti per controllare i movimenti di oscillazione delle pale di un rotore di elicottero - Google Patents

Ammortizzatore idraulico con tenute eccedenti per controllare i movimenti di oscillazione delle pale di un rotore di elicottero

Info

Publication number
IT1081094B
IT1081094B IT23946/76A IT2394676A IT1081094B IT 1081094 B IT1081094 B IT 1081094B IT 23946/76 A IT23946/76 A IT 23946/76A IT 2394676 A IT2394676 A IT 2394676A IT 1081094 B IT1081094 B IT 1081094B
Authority
IT
Italy
Prior art keywords
seals
blades
excess
control
shock absorber
Prior art date
Application number
IT23946/76A
Other languages
English (en)
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
Application granted granted Critical
Publication of IT1081094B publication Critical patent/IT1081094B/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
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/10—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
    • F16F9/14—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect
    • F16F9/16—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts
    • F16F9/18—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein
    • F16F9/20—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein with the piston-rod extending through both ends of the cylinder, e.g. constant-volume dampers
    • 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
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/3271—Assembly or repair
    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/002—Sealings comprising at least two sealings in succession
    • F16J15/004—Sealings comprising at least two sealings in succession forming of recuperation chamber for the leaking fluid

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Fluid-Damping Devices (AREA)
IT23946/76A 1975-06-05 1976-06-04 Ammortizzatore idraulico con tenute eccedenti per controllare i movimenti di oscillazione delle pale di un rotore di elicottero IT1081094B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/584,238 US4084668A (en) 1975-06-05 1975-06-05 Redundant damper seals

Publications (1)

Publication Number Publication Date
IT1081094B true IT1081094B (it) 1985-05-16

Family

ID=24336505

Family Applications (1)

Application Number Title Priority Date Filing Date
IT23946/76A IT1081094B (it) 1975-06-05 1976-06-04 Ammortizzatore idraulico con tenute eccedenti per controllare i movimenti di oscillazione delle pale di un rotore di elicottero

Country Status (8)

Country Link
US (1) US4084668A (it)
BR (1) BR7603630A (it)
CA (1) CA1045947A (it)
DE (1) DE2625240A1 (it)
FR (1) FR2313603A1 (it)
GB (1) GB1550170A (it)
IL (1) IL49744A (it)
IT (1) IT1081094B (it)

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JPS58185397A (ja) * 1982-04-26 1983-10-29 Sanshin Ind Co Ltd 船舶推進機のチルトロツク装置
US4695226A (en) * 1983-11-07 1987-09-22 United Technologies Corporation Helicopter rotor backup damper system
SE438990B (sv) * 1984-06-21 1985-05-28 Saab Scania Ab Arrangemang for dempning av vexlingsrorelser vid en mekanisk synkroniserad flerstegsvexellada
DE3524862A1 (de) * 1985-04-12 1986-10-30 Robert Bosch Gmbh, 7000 Stuttgart Vorrichtung zur daempfung von bewegungsablaeufen
US4730706A (en) * 1986-07-09 1988-03-15 Tayco Developments, Inc. Snubber with integral test structure
US4921080A (en) * 1989-05-08 1990-05-01 Lin Chien H Hydraulic shock absorber
US5347771A (en) * 1991-06-20 1994-09-20 Kajima Corporation High damping device for seismic response controlled structure
DE4208980A1 (de) * 1992-03-20 1993-09-23 Rexroth Mannesmann Gmbh Hydraulische antriebsvorrichtung mit einem zylinder
US6022600A (en) * 1992-04-24 2000-02-08 Lord Corporation High-temperature fluid mounting
US5382058A (en) * 1993-06-17 1995-01-17 Vlsi Technology, Inc. Rotatable flange union for use with vacuum systems
US5501434A (en) * 1994-05-10 1996-03-26 Lord Corporation Hybrid fluid and elastomer damper
US5687452A (en) * 1995-05-02 1997-11-18 The Boeing Company Hydraulic snubber for aircraft
GB2327650B (en) * 1995-05-18 1999-05-26 Louis Karmios Improvements in or relating to vehicle suspension systems
US6135138A (en) * 2000-02-01 2000-10-24 Raytheon Company Rotary coupler for fluid conduits
GB0004649D0 (en) * 2000-02-29 2000-04-19 Gkn Westland Helicopters Ltd Vibration damping apparatus
US6464048B1 (en) * 2000-07-24 2002-10-15 Tenneco Automotive Inc. Solenoid actuated continuously variable shock absorber
FR2826933B1 (fr) * 2001-07-04 2003-09-26 Eurocopter France Amortisseur de trainee a inertie fluide pour rotor de giravion
FR2835506B1 (fr) * 2002-02-06 2004-03-12 Eurocopter France Amortisseur de trainee a double piston pour rotor de giravion
US20040074720A1 (en) * 2002-05-07 2004-04-22 Thieltges Gary Peter Motion stabilized mounts
US7143875B2 (en) * 2003-02-05 2006-12-05 Kajima Corporation Attenuation coefficient switching type hydraulic damper
JP3873192B2 (ja) * 2003-03-27 2007-01-24 カヤバ工業株式会社 ダンパ内蔵型フロントフォーク
US7438164B2 (en) * 2003-12-08 2008-10-21 Tenneco Automotive Operating Company Inc. Solenoid actuated continuously variable servo valve for adjusting damping in shock absorbers and struts
GB2420395A (en) * 2004-11-18 2006-05-24 Westland Helicopters Vibration damping apparatus for a helicopter rotor system
US20060261530A1 (en) * 2005-05-18 2006-11-23 Bell Helicopter Textron Inc. Preloaded one-way valve accumulator
US7607383B2 (en) 2007-05-01 2009-10-27 Nagel Robert W System for backup rod seal for hydraulic cylinder
CA2837109A1 (en) * 2011-05-26 2012-11-29 Failsafe Metering International Ltd. Predictive and adaptable precision metering device, system and method
US9004466B2 (en) * 2013-02-04 2015-04-14 Bell Helicopter Textron Inc. Pneumatically augmented elastomeric damper for improved spring rate tuning
FR3020038A1 (fr) 2014-04-18 2015-10-23 Airbus Helicopters Systeme hydraulique d'aeronef comprenant au moins une servocommande, rotor et aeronef associes
WO2016148584A1 (en) 2015-03-15 2016-09-22 Holmes Solutions Limited Partnership An energy transfer apparatus and method of use
CN107532674B (zh) * 2015-03-15 2023-04-04 福尔摩斯解决方案合伙有限公司 流体回路装置
EP3431781A1 (en) * 2017-07-21 2019-01-23 Claverham Limited Piston assembly
FR3079577B1 (fr) * 2018-03-30 2020-03-13 Airbus Helicopters Amortisseur hydro elastique et aeronef
DE102020110325A1 (de) 2020-04-15 2021-10-21 Liebherr-Components Kirchdorf GmbH Schwingungsdämpfer

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US2334115A (en) * 1941-06-05 1943-11-09 Smith & Sons Ltd S Hydraulic apparatus
US2394364A (en) * 1943-04-15 1946-02-05 Niels A Christensen Pressure seal
US2604953A (en) * 1946-08-16 1952-07-29 Firestone Tire & Rubber Co Damping device for rotative wing aircraft
US2755872A (en) * 1952-03-06 1956-07-24 United Aircraft Corp Fluid damper for rotary wing aircraft
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US3110367A (en) * 1962-03-16 1963-11-12 Buckeye Steel Castings Co Hydraulic cushioning device for railway vehicles
NL6403323A (it) * 1963-03-29 1964-09-30
US3307574A (en) * 1964-02-07 1967-03-07 Acf Ind Inc Drain structure for venting leaked fluid from valve stem packing
FR1520440A (fr) * 1966-12-20 1968-04-12 Renault Dispositif pour maintenir à hauteur constante, à l'arrêt, un véhicule automobileéquipé d'une suspension oléopneumatique
FR1522274A (fr) * 1967-02-09 1968-04-26 Langen & Co Cylindre hydraulique, notamment pour jambe de force ou amortisseur d'oscillations de véhicules à réglage de niveau
US3469833A (en) * 1967-03-27 1969-09-30 Leonard S Suozzo Hydraulic shock and sway arrestor
US3514114A (en) * 1967-11-09 1970-05-26 John C Monahan Multiple sealing means
DE1630738A1 (de) * 1967-11-16 1971-08-12 Langen & Co Hydrozylinder,insbesondere fuer Federbeine oder Schwingungsdaempfer von Fahrzeugen mit Niveauregulierung
US3636708A (en) * 1970-04-13 1972-01-25 Scott Equipment Co Fluid makeup system
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US3810659A (en) * 1973-02-02 1974-05-14 J Marcil Suspension damping device
US3869963A (en) * 1973-11-09 1975-03-11 Singer Co Hydraulic actuator having a self-aspirating actuator rod seal
US3943717A (en) * 1974-01-07 1976-03-16 Caterpillar Tractor Co. Contaminant removal from a hydraulic cylinder

Also Published As

Publication number Publication date
GB1550170A (en) 1979-08-08
FR2313603A1 (fr) 1976-12-31
US4084668A (en) 1978-04-18
IL49744A (en) 1979-01-31
BR7603630A (pt) 1977-01-18
DE2625240A1 (de) 1976-12-23
CA1045947A (en) 1979-01-09

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