IT8621189A1 - Apparecchio ad asta in tensione e compressione per ammortizzare le oscillazioni delle pale di un rotore di elicottero - Google Patents

Apparecchio ad asta in tensione e compressione per ammortizzare le oscillazioni delle pale di un rotore di elicottero

Info

Publication number
IT8621189A1
IT8621189A1 IT1986A21189A IT2118986A IT8621189A1 IT 8621189 A1 IT8621189 A1 IT 8621189A1 IT 1986A21189 A IT1986A21189 A IT 1986A21189A IT 2118986 A IT2118986 A IT 2118986A IT 8621189 A1 IT8621189 A1 IT 8621189A1
Authority
IT
Italy
Prior art keywords
swinging
cushion
blades
tension
compression rod
Prior art date
Application number
IT1986A21189A
Other languages
English (en)
Other versions
IT8621189A0 (it
IT1197788B (it
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
Publication of IT8621189A0 publication Critical patent/IT8621189A0/it
Publication of IT8621189A1 publication Critical patent/IT8621189A1/it
Application granted granted Critical
Publication of IT1197788B publication Critical patent/IT1197788B/it

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Vibration Dampers (AREA)
  • Vibration Prevention Devices (AREA)
  • Toys (AREA)
  • Retarders (AREA)
IT21189/86A 1985-07-29 1986-07-21 Apparecchio ad asta in tensione e compressione per ammortizzare le oscillazioni delle pale di un motore di elecottero IT1197788B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/760,232 US4645423A (en) 1985-07-29 1985-07-29 Tension/compression rod arrangement for damping helicopter rotor blade oscillations

Publications (3)

Publication Number Publication Date
IT8621189A0 IT8621189A0 (it) 1986-07-21
IT8621189A1 true IT8621189A1 (it) 1988-01-21
IT1197788B IT1197788B (it) 1988-12-06

Family

ID=25058487

Family Applications (1)

Application Number Title Priority Date Filing Date
IT21189/86A IT1197788B (it) 1985-07-29 1986-07-21 Apparecchio ad asta in tensione e compressione per ammortizzare le oscillazioni delle pale di un motore di elecottero

Country Status (6)

Country Link
US (1) US4645423A (it)
JP (1) JPS6338098A (it)
DE (1) DE3624219A1 (it)
FR (1) FR2585327B1 (it)
GB (1) GB2178388B (it)
IT (1) IT1197788B (it)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4792280A (en) * 1987-04-27 1988-12-20 United Technologies Corporation Helicopter rotor flexbeam
US4874292A (en) * 1988-11-18 1989-10-17 The United States Of America As Represented By The Secretary Of The Army Apparatus for damping helicopter rotor blade oscillations
FR2653405B1 (fr) 1989-10-20 1992-02-07 Aerospatiale Dispositif visco-elastique rotatif de rappel elastique et d'amortissement en trainee pour pale de rotor de giravion, et tete de rotor le comportant.
EP0774595B1 (en) 1995-11-16 2002-05-08 The B.F. Goodrich Company Nested damping device with relative motion
US6318527B1 (en) 1999-12-03 2001-11-20 Sikorsky Aircraft Corporation Inertial vibration isolator spring for helicopter
US8167561B2 (en) * 2007-09-04 2012-05-01 Lord Corporation Helicopter aircraft vehicle rotor damper
US10442531B2 (en) * 2015-08-18 2019-10-15 Sikorsky Aircraft Corporation Rotor damping
EP3766778B1 (en) * 2019-07-19 2021-11-24 LEONARDO S.p.A. Rotor for a hover-capable aircraft
US12060148B2 (en) 2022-08-16 2024-08-13 Honeywell International Inc. Ground resonance detection and warning system and method

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE623361C (it) *
US2620888A (en) * 1947-03-10 1952-12-09 Harold T Avery Blade tracking mechanism for lifting rotors
US3262407A (en) * 1964-02-03 1966-07-26 Midland Ross Corp Closure means for furnace vestibule
DE1456107A1 (de) * 1964-07-04 1968-12-19 Westland Aircraft Ltd Drehfluegelflugzeug
FR1442684A (fr) * 1965-06-30 1966-06-17 Westland Aircraft Ltd Perfectionnements aux têtes de rotor pour appareils d'aviation à voilure tournante
FR2125150B1 (it) * 1971-02-15 1973-12-07 Aerospatiale
GB2025338B (en) * 1978-06-02 1982-08-04 Aerospatiale Helicopterrotor
SE413048B (sv) * 1979-03-27 1980-03-31 Pettersson Bertil Sett att vid en i huvudsak horisontalaxlad vidturbin med flappningnav reglerad flappingrorelsen
FR2500076A1 (fr) * 1981-02-17 1982-08-20 Morin Roland Eolienne independante de la direction du vent
DE3123082A1 (de) * 1981-06-11 1982-12-30 Messerschmitt-Bölkow-Blohm GmbH, 8000 München "rotor mit gelenk- und lagerlosem blattanschluss"
DE3146347A1 (de) * 1981-11-23 1983-06-01 Messerschmitt-Bölkow-Blohm GmbH, 8000 München "rotor, insbesondere fuer ein drehfluegelflugzeug"
DE3148903C2 (de) * 1981-12-10 1985-05-02 Messerschmitt-Bölkow-Blohm GmbH, 8000 München Elastomere Dämpfungseinrichtung für ein Rotorblatt
US4419051A (en) * 1982-02-16 1983-12-06 The Boeing Company Twin tension/torsion beam rotor system
US4466774A (en) * 1982-08-30 1984-08-21 United Technologies Corporation Composite flexbeam joint
JPH0229560B2 (ja) * 1983-04-07 1990-06-29 Boeicho Gijutsu Kenkyu Honbucho Mukansetsugatakaitenyoku

Also Published As

Publication number Publication date
JPS6338098A (ja) 1988-02-18
DE3624219A1 (de) 1987-02-05
FR2585327B1 (fr) 1988-01-15
US4645423A (en) 1987-02-24
IT8621189A0 (it) 1986-07-21
IT1197788B (it) 1988-12-06
GB2178388A (en) 1987-02-11
GB8616023D0 (en) 1986-08-06
GB2178388B (en) 1988-07-20
FR2585327A1 (fr) 1987-01-30

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