FR2376791A1 - Rotor d'helicoptere a sommier perfectionne - Google Patents

Rotor d'helicoptere a sommier perfectionne

Info

Publication number
FR2376791A1
FR2376791A1 FR7800269A FR7800269A FR2376791A1 FR 2376791 A1 FR2376791 A1 FR 2376791A1 FR 7800269 A FR7800269 A FR 7800269A FR 7800269 A FR7800269 A FR 7800269A FR 2376791 A1 FR2376791 A1 FR 2376791A1
Authority
FR
France
Prior art keywords
blades
rotor
pitch
change
movement
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Withdrawn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
FR7800269A
Other languages
English (en)
Inventor
Donald Leroy Ferris
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.)
RTX 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 FR2376791A1 publication Critical patent/FR2376791A1/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Withdrawn legal-status Critical Current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
    • B64C27/35—Rotors having elastomeric joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C27/00—Rotorcraft; Rotors peculiar thereto
    • B64C27/32—Rotors
    • B64C27/33—Rotors having flexing arms

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Toys (AREA)
  • Wind Motors (AREA)

Abstract

L'invention concerne un rotor à sommier perfectionné. Ce rotor comporte des pales 14 s'étendant dans des directions opposées à partir de l'axe 12 du rotor, tout en étant supportées et équilibrées pour effectuer un mouvement de changement de pas sur un axe 16. Les paires de pales opposées 14 sont supportées par un longeron flexible commun 18 réagissant aux forces centrifuges qui s'exercent entre les pales, à l'effort de torsion résultant d'un changement de pas, ainsi qu'à une flexion de battement et une flexion avant-arrière. L'invention est utilisée pour permettre un découplage entre le mouvement de changement de pas, le battement et le mouvement d'avant en arrière des pales.
FR7800269A 1977-01-07 1978-01-06 Rotor d'helicoptere a sommier perfectionne Withdrawn FR2376791A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/757,168 US4087203A (en) 1977-01-07 1977-01-07 Cross beam rotor

Publications (1)

Publication Number Publication Date
FR2376791A1 true FR2376791A1 (fr) 1978-08-04

Family

ID=25046666

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7800269A Withdrawn FR2376791A1 (fr) 1977-01-07 1978-01-06 Rotor d'helicoptere a sommier perfectionne

Country Status (10)

Country Link
US (1) US4087203A (fr)
JP (1) JPS5389200A (fr)
AU (1) AU510981B2 (fr)
BE (1) BE862604A (fr)
CA (1) CA1074760A (fr)
DE (1) DE2800075A1 (fr)
FR (1) FR2376791A1 (fr)
GB (1) GB1582411A (fr)
IL (1) IL53729A (fr)
IT (1) IT1091953B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2430354A1 (fr) * 1978-07-07 1980-02-01 Aerospatiale Helice multipale a pas variable d'un type simplifie

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2397327A1 (fr) * 1977-07-13 1979-02-09 Aerospatiale Rotor a pas variable, en particulier pour un giravion
FR2397326A2 (fr) * 1977-07-13 1979-02-09 Aerospatiale Rotor sans articulations, en particulier pour un giravion
FR2397325A1 (fr) * 1977-07-13 1979-02-09 Aerospatiale Moyeu de rotor, en particulier pour le rotor principal d'un helicoptere
US4244677A (en) * 1978-07-12 1981-01-13 United Technologies Corporation Cross-beam helicopter rotor with readily replaceable snubber
JPS5567105U (fr) * 1978-10-28 1980-05-09
US4299538A (en) * 1978-12-06 1981-11-10 United Technologies Corporation Cross beam rotor
DE2903524C2 (de) * 1979-01-31 1982-02-25 Messerschmitt-Bölkow-Blohm GmbH, 8000 München Schlag- und schwenkgelenkloser Anschluß von Rotorblättern eines Drehflügelflugzeuges
US4366387A (en) * 1979-05-10 1982-12-28 Carter Wind Power Wind-driven generator apparatus and method of making blade supports _therefor
USRE30713E (en) * 1979-08-01 1981-08-18 United Technologies Corp. Cross beam rotor
US4332525A (en) * 1979-12-03 1982-06-01 United Technologies Corporation Matched stiffness rotor flexbeam and blade system
US4588355A (en) * 1984-08-23 1986-05-13 United Technologies Corporation Flexible swashplate centering member
US4695227A (en) * 1985-02-27 1987-09-22 Hughes Helicopters Inc. All composite, constant speed universal joint for use in a shaft driven tiltable main rotor for a helicopter
DE3633346C1 (de) * 1986-10-01 1987-11-05 Messerschmitt Boelkow Blohm Rotor,insbesondere eines Drehfluegelfluegzeuges
JP2667176B2 (ja) * 1987-11-10 1997-10-27 富士重工業株式会社 ヘリコプタのピッチ変更及びリードラグ減衰装置
DE3824815A1 (de) * 1988-07-21 1990-01-25 Messerschmitt Boelkow Blohm Rotor, insbesondere eines drehfluegelflugzeugs, abstuetzung einer blattsteuerhuelle
DE3824816A1 (de) * 1988-07-21 1990-01-25 Messerschmitt Boelkow Blohm Federelement zur drehwinkelbeweglichen verbindung zweiter bauteile
GB8922338D0 (en) * 1989-10-04 1989-11-22 Westland Helicopters Helicopter rotors
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
EP0459937B1 (fr) * 1990-05-30 1995-12-20 United Technologies Corporation Assemblage de rotule de moyeu amélioré pour un rotor d'hélicoptère avec pales élastiques
US6024325A (en) * 1997-01-09 2000-02-15 Cartercopters, Llc Rotor for rotary wing aircraft
US6827553B2 (en) 2003-01-15 2004-12-07 Lord Corporation Flexbeam damper assembly having transition shim clamp device
US20100014973A1 (en) * 2008-07-19 2010-01-21 Carlos Manuel Perez Romo Vertical Axis Fluid Flow Turbine System
US9884680B2 (en) 2008-12-11 2018-02-06 Sikorsky Aircraft Corporation Elastomeric bearing system motion limiter
US9169011B2 (en) * 2011-09-13 2015-10-27 Sikorsky Aircraft Corporation Rotor with blades including outer blade shell and inner structural member
US9452830B2 (en) * 2014-01-13 2016-09-27 Sikorsky Aircraft Corporation Constant velocity drive for tilt rotor assembly
EP3371049B1 (fr) * 2015-11-02 2022-03-09 Sikorsky Aircraft Corporation Dispositif de retenue d'amortisseur de pale de rotor pour giravion
US10858096B1 (en) * 2019-05-29 2020-12-08 Lockheed Martin Corporation Folding horn concept for rigid rotor blade fold

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3874820A (en) * 1974-04-08 1975-04-01 United Aircraft Corp Hingeless in-plane rotor blade design
US3926536A (en) * 1970-10-15 1975-12-16 Westland Aircraft Ltd Semi-rigid rotor systems for rotary wing aircraft
US3999886A (en) * 1974-10-10 1976-12-28 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Hingeless helicopter rotor with improved stability

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2949967A (en) * 1959-05-25 1960-08-23 Hughes Tool Co Blade-to-hub connector for thrust producing rotor
GB1205757A (en) * 1967-02-07 1970-09-16 Westland Aircraft Ltd Improvements in or relating to rotor heads for rotary wing aircraft
US3501250A (en) * 1968-03-22 1970-03-17 Boeing Co Rotor hub
US3484174A (en) * 1968-04-08 1969-12-16 Kaman Corp Rotary wing system
FR2041747A1 (fr) * 1969-05-20 1971-02-05 Sud Aviation
US3880551A (en) * 1973-11-15 1975-04-29 Boeing Co Rotary head assembly for rotary wing aircraft
US3874815A (en) * 1973-11-15 1975-04-01 Boeing Co Rotary head assembly for rotary wing aircraft
US4008980A (en) * 1975-06-26 1977-02-22 United Technologies Corporation Composite helicopter spar and means to alleviate stress concentration

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3926536A (en) * 1970-10-15 1975-12-16 Westland Aircraft Ltd Semi-rigid rotor systems for rotary wing aircraft
US3874820A (en) * 1974-04-08 1975-04-01 United Aircraft Corp Hingeless in-plane rotor blade design
US3999886A (en) * 1974-10-10 1976-12-28 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Hingeless helicopter rotor with improved stability

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2430354A1 (fr) * 1978-07-07 1980-02-01 Aerospatiale Helice multipale a pas variable d'un type simplifie

Also Published As

Publication number Publication date
CA1074760A (fr) 1980-04-01
GB1582411A (en) 1981-01-07
IT1091953B (it) 1985-07-06
US4087203A (en) 1978-05-02
BE862604A (fr) 1978-05-02
IL53729A (en) 1981-01-30
JPS5389200A (en) 1978-08-05
IT7819052A0 (it) 1978-01-06
AU510981B2 (en) 1980-07-24
DE2800075A1 (de) 1978-07-13
AU3215878A (en) 1979-07-12

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Legal Events

Date Code Title Description
ST Notification of lapse