FR2358316A1 - Rotor d'helicoptere - Google Patents

Rotor d'helicoptere

Info

Publication number
FR2358316A1
FR2358316A1 FR7721612A FR7721612A FR2358316A1 FR 2358316 A1 FR2358316 A1 FR 2358316A1 FR 7721612 A FR7721612 A FR 7721612A FR 7721612 A FR7721612 A FR 7721612A FR 2358316 A1 FR2358316 A1 FR 2358316A1
Authority
FR
France
Prior art keywords
blade
pitch
change
articulation
drag
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
FR7721612A
Other languages
English (en)
Other versions
FR2358316B1 (fr
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Westland Group PLC
Original Assignee
Westland Aircraft Ltd
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 Aircraft Ltd filed Critical Westland Aircraft Ltd
Publication of FR2358316A1 publication Critical patent/FR2358316A1/fr
Application granted granted Critical
Publication of FR2358316B1 publication Critical patent/FR2358316B1/fr
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C27/00—Rotorcraft; Rotors peculiar thereto
    • B64C27/32—Rotors
    • B64C27/46—Blades
    • B64C27/473—Constructional features
    • B64C27/48—Root attachment to rotor head
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C27/00—Rotorcraft; Rotors peculiar thereto
    • B64C27/32—Rotors
    • B64C27/35—Rotors having elastomeric joints

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Support Of The Bearing (AREA)
  • Vibration Prevention Devices (AREA)
  • Toys (AREA)
  • Mechanical Operated Clutches (AREA)

Abstract

L'invention s'applique aux aéronefs à voilure tournante du type hélicoptère à rotor semi-rigide. Le moyeu du rotor comprend, pour chaque pale, un élément de flexion 14 qui absorbe les mouvements de battement de la pale, une articulation de changement de pas 15, et un montage élastique travaillant au cisaillement 26, logé à l'intérieur de l'articulation de changement de pas, pour absorber les mouvements de traînée de la pale. L'articulation de changement de pas est constituée par deux paliers en élastomères 22, 23. L'invention permet de raccourcir les bras du moyeu et d'incorporer des moyens automatiques d'amortissement dans le plan de traînée.
FR7721612A 1976-07-15 1977-07-13 Rotor d'helicoptere Granted FR2358316A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB29587/76A GB1534404A (en) 1976-07-15 1976-07-15 Helicopter rotors

Publications (2)

Publication Number Publication Date
FR2358316A1 true FR2358316A1 (fr) 1978-02-10
FR2358316B1 FR2358316B1 (fr) 1980-01-18

Family

ID=10293895

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7721612A Granted FR2358316A1 (fr) 1976-07-15 1977-07-13 Rotor d'helicoptere

Country Status (4)

Country Link
US (1) US4129403A (fr)
DE (1) DE2731675A1 (fr)
FR (1) FR2358316A1 (fr)
GB (1) GB1534404A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2587971A1 (fr) * 1985-10-01 1987-04-03 Messerschmitt Boelkow Blohm Rotor, en particulier pour aeronef a voilure tournante
EP0549455A1 (fr) * 1991-12-26 1993-06-30 AEROSPATIALE Société Nationale Industrielle Dispositif de palier élastomérique cylindrique à grand débattement angulaire

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1539200A (en) * 1976-12-08 1979-01-31 Westland Aircraft Ltd Helicopter rotors
GB2006144B (en) * 1977-09-07 1982-01-13 Westland Aircraft Ltd Helicopter
US4297078A (en) * 1978-05-17 1981-10-27 Westland Aircraft Limited Helicopter rotors
US4257739A (en) * 1978-09-11 1981-03-24 Textron, Inc. Soft inplane helicopter rotor
US4430045A (en) 1979-04-24 1984-02-07 Bell Helicopter Textron, Inc. Helicopter power train for distributing rotor blade flapping displacements through a plurality of drive train components
US4242047A (en) * 1979-05-02 1980-12-30 United Technologies Corporation Adjustable bearing centering means for helicopter rotor elastomeric bearings
US4564336A (en) * 1982-03-15 1986-01-14 Hughes Helicopters, Inc. Low drag, bearingless rotor head for helicopters
GB2165333A (en) * 1984-09-26 1986-04-09 Steven Odobasic Laminated torsion elements
DE3601105C2 (de) * 1985-10-01 1995-06-14 Eurocopter Deutschland Rotor, insbesondere für Drehflügelflugzeuge
IT1196800B (it) * 1986-11-25 1988-11-25 Agusta Aeronaut Costr Rotore anticoppia per elicotteri
FR2613319B1 (fr) * 1987-03-30 1989-06-30 Aerospatiale Dispositif de palier combine pour rotor de giravion, et rotor equipe d'un tel dispositif de palier
KR950704630A (ko) * 1992-12-23 1995-11-20 스테펜 슈니버거 관형 엘라스토머 댐퍼(tubular elastomer damper)
US5913659A (en) * 1993-11-22 1999-06-22 United Technologies Corporation Apparatus and method for adjusting rotor blade tracking
US6413048B1 (en) * 2000-09-29 2002-07-02 The Boeing Company Elastomeric bearing
DE10119427A1 (de) * 2001-04-20 2002-10-24 Enron Wind Gmbh Kopplungsvorrichtung für eine Windkraftanlage
US6889965B2 (en) * 2001-10-10 2005-05-10 The Boeing Company Opposing conical preloaded elastomeric bearing assembly
US9796469B2 (en) * 2014-04-04 2017-10-24 The Boeing Company Modular rotor craft rotor hub system
US10336446B2 (en) * 2016-01-04 2019-07-02 Sikorsky Aircraft Corporation Directional stiffness bearing sleeve assembly for rotor systems
US11066158B2 (en) * 2019-06-06 2021-07-20 Lockheed Martin Corporation Low drag high capacity pitch bearing for rigid rotor aircraft

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1309168A (en) * 1970-10-15 1973-03-07 Westland Aircraft Ltd Semi-rigid rotor systems for rotary wing aircraft
GB1310035A (en) * 1970-10-15 1973-03-14 Westland Aircraft Ltd Semi-rigid rotor systems for rotary wing aircraft

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3026942A (en) * 1959-07-07 1962-03-27 Bell Helicopter Corp Helicopter rotor system
US3556673A (en) * 1968-10-11 1971-01-19 Bolkow Gmbh Rotor mounting
US3926536A (en) * 1970-10-15 1975-12-16 Westland Aircraft Ltd Semi-rigid rotor systems for rotary wing aircraft
US3700352A (en) * 1971-03-05 1972-10-24 Lord Corp Rotor system
US3790302A (en) * 1972-10-10 1974-02-05 Textron Inc Tail rotor mounting for coning relief
US3807896A (en) * 1972-10-10 1974-04-30 Textron Inc Concentric tube spring rotor mount
US4012169A (en) * 1973-05-10 1977-03-15 Societe Nationale Industrielle Aerospatiale Rotor for rotating wing type aircraft
US3942910A (en) * 1974-05-13 1976-03-09 Textron, Inc. Grip-yoke assembly with a redundant centrifugal load support
US4028002A (en) * 1976-03-01 1977-06-07 Lord Corporation Rotor blade retention system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1309168A (en) * 1970-10-15 1973-03-07 Westland Aircraft Ltd Semi-rigid rotor systems for rotary wing aircraft
GB1310035A (en) * 1970-10-15 1973-03-14 Westland Aircraft Ltd Semi-rigid rotor systems for rotary wing aircraft

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2587971A1 (fr) * 1985-10-01 1987-04-03 Messerschmitt Boelkow Blohm Rotor, en particulier pour aeronef a voilure tournante
EP0549455A1 (fr) * 1991-12-26 1993-06-30 AEROSPATIALE Société Nationale Industrielle Dispositif de palier élastomérique cylindrique à grand débattement angulaire
FR2685675A1 (fr) * 1991-12-26 1993-07-02 Aerospatiale Dispositif de palier elastomerique cylindrique a grand debattement angulaire.
US5330322A (en) * 1991-12-26 1994-07-19 Aerospatiale Societe National Industrielle Cylindrical elastomeric bearing with large angular deflection

Also Published As

Publication number Publication date
US4129403A (en) 1978-12-12
DE2731675A1 (de) 1978-01-19
FR2358316B1 (fr) 1980-01-18
GB1534404A (en) 1978-12-06

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Legal Events

Date Code Title Description
ST Notification of lapse