FR2297166A1 - Mecanisme de limitation de la chute des pales d'un rotor d'helicoptere - Google Patents

Mecanisme de limitation de la chute des pales d'un rotor d'helicoptere

Info

Publication number
FR2297166A1
FR2297166A1 FR7600414A FR7600414A FR2297166A1 FR 2297166 A1 FR2297166 A1 FR 2297166A1 FR 7600414 A FR7600414 A FR 7600414A FR 7600414 A FR7600414 A FR 7600414A FR 2297166 A1 FR2297166 A1 FR 2297166A1
Authority
FR
France
Prior art keywords
blades
fall
limiting
helicopter rotor
helicopter
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.)
Withdrawn
Application number
FR7600414A
Other languages
English (en)
Inventor
Robert Charles Rybicki
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.)
Raytheon Technologies Corp
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 FR2297166A1 publication Critical patent/FR2297166A1/fr
Withdrawn legal-status Critical Current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
    • B64C27/322—Blade travel limiting devices, e.g. droop stops
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Toys (AREA)
FR7600414A 1975-01-10 1976-01-09 Mecanisme de limitation de la chute des pales d'un rotor d'helicoptere Withdrawn FR2297166A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/540,309 US3932059A (en) 1975-01-10 1975-01-10 Droop stops for helicopter rotor having elastomeric bearings

Publications (1)

Publication Number Publication Date
FR2297166A1 true FR2297166A1 (fr) 1976-08-06

Family

ID=24154894

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7600414A Withdrawn FR2297166A1 (fr) 1975-01-10 1976-01-09 Mecanisme de limitation de la chute des pales d'un rotor d'helicoptere

Country Status (7)

Country Link
US (1) US3932059A (fr)
JP (1) JPS5195396A (fr)
CA (1) CA1020926A (fr)
DE (1) DE2600685A1 (fr)
FR (1) FR2297166A1 (fr)
GB (1) GB1532822A (fr)
IT (1) IT1054045B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2523070A1 (fr) * 1982-03-11 1983-09-16 Agusta Aeronaut Costr Rotor d'helicoptere
EP2910470A1 (fr) 2014-02-21 2015-08-26 Airbus Helicopters Rotor pour giravion comportant un mécanisme de butée en battement, et giravion

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2025338B (en) * 1978-06-02 1982-08-04 Aerospatiale Helicopterrotor
IT1117626B (it) * 1979-02-02 1986-02-17 Aereonautiche Giovanni Augusta Rotore articolato per elicotteri
US4242047A (en) * 1979-05-02 1980-12-30 United Technologies Corporation Adjustable bearing centering means for helicopter rotor elastomeric bearings
US4368006A (en) * 1980-08-07 1983-01-11 The United States Of America As Represented By The Secretary Of The Navy Droop stop for fully articulated rotor
IT1155133B (it) * 1982-03-11 1987-01-21 Agusta Aeronaut Costr Rotore per elicotteri
IT1205405B (it) * 1983-05-05 1989-03-15 Agusta Aeronaut Costr Rotore per elicotteri
US4549852A (en) * 1983-12-16 1985-10-29 United Technologies Corporation Helicopter blade droop stop with slidable droop stop seat
IT1182447B (it) * 1985-02-19 1987-10-05 Agusta Aeronaut Costr Rotore per elicotteri
IT1196801B (it) * 1986-11-25 1988-11-25 Agusta Aeronaut Costr Rotore per elicotteri
US5059094A (en) * 1989-10-13 1991-10-22 Bell Helicopter Textron, Inc. Rotor redundant force retention system for vtol and vstol aircraft
US5092738A (en) * 1990-04-06 1992-03-03 United Technologies Corporation Flexbeam helicopter rotor with improved snubber-vibration damper between the torque tube and the flexible spar member
US5601408A (en) * 1996-03-18 1997-02-11 Sikorsky Aircraft Corporation Axisymmetric elastomeric bearing assembly for helicopter rotors
US6309182B1 (en) * 2000-04-05 2001-10-30 The Boeing Company Helicopter rotor droop stop mechanism
US7354248B2 (en) * 2005-10-17 2008-04-08 Sikorsky Aircraft Corporation Elastomeric bearing elements for droop stop mechanisms
US7448855B2 (en) * 2006-02-17 2008-11-11 The Boeing Company Droop stop mechanism for helicopter rotor blade
EP2367718B1 (fr) 2008-12-09 2018-07-11 Sikorsky Aircraft Corporation Butée d'avance pour système de rotor comprenant un amortisseur d'avance/de retard fluide élastomère
US10000283B2 (en) * 2013-03-14 2018-06-19 William L. Hinks Negative spring compensation for elastomeric bearing torque
FR3020341B1 (fr) * 2014-04-24 2016-04-29 Airbus Helicopters Rotor comportant un mecanisme de butee en trainee, et aeronef
US10272996B2 (en) 2015-02-05 2019-04-30 Sikorsky Aircraft Corporation Abrasion resistant pivot bearing
US20160238068A1 (en) * 2015-02-12 2016-08-18 Aktiebolaget Skf Combination spherical and laminated bearing
US10308356B2 (en) 2016-11-22 2019-06-04 Bell Helicopter Textron Inc. Axial springs for rotor hub assembly
CN113942639B (zh) * 2021-10-09 2023-05-05 中国直升机设计研究所 一种直升机离心式桨叶挥舞限动系统

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2004556A1 (fr) * 1968-03-22 1969-11-28 Boeing Co Moyeu de rotor d'helicoptere
FR2197764A1 (fr) * 1972-09-05 1974-03-29 United Aircraft Corp

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3533713A (en) * 1968-04-01 1970-10-13 Lockheed Aircraft Corp Rotor locking device
FR2041762B1 (fr) * 1969-05-28 1973-11-16 Aerospatiale
US3778189A (en) * 1972-09-05 1973-12-11 United Aircraft Corp Elastomeric helicopter rotor head with dynamic and static blade coning and droop stops
US3853426A (en) * 1972-09-05 1974-12-10 United Aircraft Corp Elastomeric helicopter rotor head with dynamic and static blade coning and droop stops

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2004556A1 (fr) * 1968-03-22 1969-11-28 Boeing Co Moyeu de rotor d'helicoptere
FR2197764A1 (fr) * 1972-09-05 1974-03-29 United Aircraft Corp

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2523070A1 (fr) * 1982-03-11 1983-09-16 Agusta Aeronaut Costr Rotor d'helicoptere
EP2910470A1 (fr) 2014-02-21 2015-08-26 Airbus Helicopters Rotor pour giravion comportant un mécanisme de butée en battement, et giravion
US9682775B2 (en) 2014-02-21 2017-06-20 Airbus Helicopters Rotorcraft rotor including a flapping abutment mechanism, and a rotorcraft

Also Published As

Publication number Publication date
IT1054045B (it) 1981-11-10
US3932059A (en) 1976-01-13
JPS5195396A (fr) 1976-08-20
DE2600685A1 (de) 1976-07-15
CA1020926A (en) 1977-11-15
GB1532822A (en) 1978-11-22

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Legal Events

Date Code Title Description
ST Notification of lapse