FR2140108B1 - - Google Patents

Info

Publication number
FR2140108B1
FR2140108B1 FR7219456A FR7219456A FR2140108B1 FR 2140108 B1 FR2140108 B1 FR 2140108B1 FR 7219456 A FR7219456 A FR 7219456A FR 7219456 A FR7219456 A FR 7219456A FR 2140108 B1 FR2140108 B1 FR 2140108B1
Authority
FR
France
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.)
Expired
Application number
FR7219456A
Other versions
FR2140108A1 (fr
Inventor
Cecil Edward Covington
Joe Dan Puckett
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.)
Textron Inc
Original Assignee
Textron Inc
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 Textron Inc filed Critical Textron Inc
Publication of FR2140108A1 publication Critical patent/FR2140108A1/fr
Application granted granted Critical
Publication of FR2140108B1 publication Critical patent/FR2140108B1/fr
Expired 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
    • B64C27/50—Blades foldable to facilitate stowage of aircraft

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transmission Devices (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
FR7219456A 1971-06-01 1972-05-31 Expired FR2140108B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US14882471A 1971-06-01 1971-06-01

Publications (2)

Publication Number Publication Date
FR2140108A1 FR2140108A1 (fr) 1973-01-12
FR2140108B1 true FR2140108B1 (fr) 1977-07-29

Family

ID=22527551

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7219456A Expired FR2140108B1 (fr) 1971-06-01 1972-05-31

Country Status (8)

Country Link
US (1) US3749515A (fr)
JP (2) JPS5759118B1 (fr)
AU (1) AU458368B2 (fr)
CA (1) CA963872A (fr)
DE (1) DE2224170C2 (fr)
FR (1) FR2140108B1 (fr)
GB (1) GB1375658A (fr)
IT (1) IT958039B (fr)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4252504A (en) * 1978-10-10 1981-02-24 Textron, Inc. Helicopter blade folding system
EP0057053A1 (fr) * 1981-01-22 1982-08-04 WESTLAND plc Rotor d'hélicoptère
DE3272187D1 (en) * 1981-11-19 1986-08-28 Westland Plc Helicopter rotors
US4738592A (en) * 1984-09-28 1988-04-19 The Boeing Company Cam assisted blade folding system
GB2168794B (en) * 1984-10-01 1987-12-23 Commw Of Australia Wing or fin deploying mechanism
US5031858A (en) * 1989-11-20 1991-07-16 Bell Helicopter Textron, Inc. Apparatus and method for folding and locking rotor blades
US5211538A (en) * 1991-11-27 1993-05-18 Bell Helicopter Textron Inc. Method for folding helicopter main rotor blades
US5868351A (en) * 1996-05-23 1999-02-09 Bell Helicopter Textron Inc. Rotor blade stowing system
FR2836889B1 (fr) * 2002-03-11 2004-05-28 Eurocopter France Procede et dispositif de repliage-depliage des pales d'un rotor de giravion
US20060067822A1 (en) * 2004-09-24 2006-03-30 D Anna Frank P Pitch lock and lag positioner for a rotor blade folding system
US7530790B2 (en) * 2006-09-20 2009-05-12 Sikorsky Aircraft Corporation Rotor blade folding system
US8919692B2 (en) 2009-04-28 2014-12-30 Sikorsky Aircraft Corporation Proximity sensor valve and lock system using same
ES2367162B1 (es) * 2009-08-04 2012-09-12 Heribert Soler Canela Dispositivo rigidizador de palas de rotor de helicóptero y/o autogiro.
FR2994417B1 (fr) * 2012-08-13 2015-11-06 Etienne Jean Rampal Dispositif de commande de verrou pour pales repliables de giravions autour de leur seule broche d'attache sur leur manchon
FR3048953B1 (fr) * 2016-03-21 2018-04-06 Arianegroup Sas Helice d'aeronef comprenant des pales pliables et a calage variable
US10239605B2 (en) * 2016-09-19 2019-03-26 Bell Helicopter Textron Inc. Chordwise folding and locking of rotor systems
FR3056554B1 (fr) * 2016-09-29 2018-08-31 Airbus Helicopters Butee d'une pale
CN107054637B (zh) * 2017-05-25 2023-08-15 桂艳春 一种多旋翼直升机折叠系统
US10787244B2 (en) * 2018-06-19 2020-09-29 Bell Helicopter Textron Inc. Semi-automatic rotor blade fold mechanism
US10933986B2 (en) * 2018-06-22 2021-03-02 Bell Helicopter Textron Inc. Blade fold method and apparatus for a tilt rotor hub
US10773793B2 (en) * 2018-08-05 2020-09-15 Textron Innovations Inc. Rotor blade locking assembly
FR3111325B1 (fr) * 2020-06-16 2022-12-09 Safran Helicopter Engines Ensemble propulsif a helice a pales repliables et procede de repliement des pales
CN111806682B (zh) * 2020-06-19 2023-10-03 中国科学院地理科学与资源研究所 无人机复飞方法
CN112591083B (zh) * 2020-12-25 2023-02-28 中国直升机设计研究所 一种桨叶折叠收藏整流结构
US20230067093A1 (en) * 2021-08-24 2023-03-02 Bell Textron Inc. Chord Lock Assembly for a Tiltrotor Aircraft
CN114313250A (zh) * 2022-01-04 2022-04-12 广东汇天航空航天科技有限公司 折叠装置、螺旋桨、旋翼模组及飞行设备

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2815820A (en) * 1955-04-19 1957-12-10 Gyrodyne Company Of America In Power folding rotor blade system for rotary wing aircraft
GB852841A (en) * 1957-12-10 1960-11-02 Westland Aircraft Ltd Improvements in or relating to rotary wing aircraft
DE1260317B (de) * 1962-10-15 1968-02-01 Boeing Co Vorrichtung zum Zusammen- und Auseinanderfalten der Drehfluegel eines Drehfluegelflugzeuges
US3153455A (en) * 1962-10-15 1964-10-20 Boeing Co Folding mechanism
US3247907A (en) * 1963-09-18 1966-04-26 Boeing Co Blade folding mechanism for rotary wing aircraft
US3187818A (en) * 1964-12-31 1965-06-08 Boeing Co Blade folding mechanism
US3356155A (en) * 1965-07-29 1967-12-05 Donald L Ferris Blade fold adjustment and lock
US3438447A (en) * 1967-10-12 1969-04-15 United Aircraft Corp Dual linear output and dual rotary output actuator with redundant drive
US3612444A (en) * 1969-11-10 1971-10-12 Ryan Aeronautical Co Controlled circulation stowable rotor for v/stol aircraft

Also Published As

Publication number Publication date
GB1375658A (fr) 1974-11-27
IT958039B (it) 1973-10-20
JPS5759118B1 (fr) 1982-12-13
AU4286972A (en) 1973-12-06
FR2140108A1 (fr) 1973-01-12
CA963872A (en) 1975-03-04
US3749515A (en) 1973-07-31
DE2224170C2 (de) 1982-07-29
AU458368B2 (en) 1975-02-27
JPS60280B2 (ja) 1985-01-07
DE2224170A1 (de) 1973-01-04
JPS57114796A (en) 1982-07-16

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Legal Events

Date Code Title Description
ST Notification of lapse