GB1375658A - - Google Patents

Info

Publication number
GB1375658A
GB1375658A GB2541872A GB2541872A GB1375658A GB 1375658 A GB1375658 A GB 1375658A GB 2541872 A GB2541872 A GB 2541872A GB 2541872 A GB2541872 A GB 2541872A GB 1375658 A GB1375658 A GB 1375658A
Authority
GB
United Kingdom
Prior art keywords
blade
pin
cam
fitting
causes
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.)
Expired
Application number
GB2541872A
Other languages
English (en)
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 GB1375658A publication Critical patent/GB1375658A/en
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)
GB2541872A 1971-06-01 1972-05-31 Expired GB1375658A (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
GB1375658A true GB1375658A (enrdf_load_stackoverflow) 1974-11-27

Family

ID=22527551

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2541872A Expired GB1375658A (enrdf_load_stackoverflow) 1971-06-01 1972-05-31

Country Status (8)

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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0057053A1 (en) * 1981-01-22 1982-08-04 WESTLAND plc Helicopter rotors
CN107054637A (zh) * 2017-05-25 2017-08-18 桂艳春 一种多旋翼直升机折叠系统

Families Citing this family (24)

* 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
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
WO2010141132A2 (en) 2009-04-28 2010-12-09 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
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
US12162594B2 (en) * 2021-08-24 2024-12-10 Textron Innovations 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
US3153455A (en) * 1962-10-15 1964-10-20 Boeing Co Folding mechanism
DE1260317B (de) * 1962-10-15 1968-02-01 Boeing Co Vorrichtung zum Zusammen- und Auseinanderfalten der Drehfluegel eines Drehfluegelflugzeuges
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

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0057053A1 (en) * 1981-01-22 1982-08-04 WESTLAND plc Helicopter rotors
CN107054637A (zh) * 2017-05-25 2017-08-18 桂艳春 一种多旋翼直升机折叠系统
CN107054637B (zh) * 2017-05-25 2023-08-15 桂艳春 一种多旋翼直升机折叠系统

Also Published As

Publication number Publication date
FR2140108B1 (enrdf_load_stackoverflow) 1977-07-29
IT958039B (it) 1973-10-20
DE2224170C2 (de) 1982-07-29
JPS57114796A (en) 1982-07-16
AU4286972A (en) 1973-12-06
AU458368B2 (en) 1975-02-27
JPS60280B2 (ja) 1985-01-07
DE2224170A1 (de) 1973-01-04
JPS5759118B1 (enrdf_load_stackoverflow) 1982-12-13
US3749515A (en) 1973-07-31
CA963872A (en) 1975-03-04
FR2140108A1 (enrdf_load_stackoverflow) 1973-01-12

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee