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 elicotteroInfo
- 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
Links
- 239000006096 absorbing agent Substances 0.000 title 1
- 230000035939 shock Effects 0.000 title 1
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)
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) |
Families Citing this family (34)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL185595C (nl) * | 1977-05-09 | 1990-06-01 | Lely Nv C Van Der | Koppelelement in de hefinrichting-bevestiging van een werktuig aan een trekker of dergelijk voertuig. |
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 |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2122045A (en) * | 1935-10-22 | 1938-06-28 | Waterbury Tool Co | Power transmission |
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 |
GB809897A (en) * | 1957-07-26 | 1959-03-04 | Sperry Gyroscope Co Ltd | Shaft sealing arrangement |
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 |
US3925987A (en) * | 1972-10-06 | 1975-12-16 | Jacques Faisandier | Hydraulic control circuit |
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 |
-
1975
- 1975-06-05 US US05/584,238 patent/US4084668A/en not_active Expired - Lifetime
-
1976
- 1976-05-31 CA CA253,720A patent/CA1045947A/en not_active Expired
- 1976-06-04 DE DE19762625240 patent/DE2625240A1/de not_active Withdrawn
- 1976-06-04 GB GB23240/76A patent/GB1550170A/en not_active Expired
- 1976-06-04 BR BR3630/76A patent/BR7603630A/pt unknown
- 1976-06-04 IT IT23946/76A patent/IT1081094B/it active
- 1976-06-04 FR FR7616940A patent/FR2313603A1/fr not_active Withdrawn
- 1976-06-09 IL IL49744A patent/IL49744A/xx unknown
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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