AU7622781A - Automatic lock-positioning of foldable helicopter blades - Google Patents

Automatic lock-positioning of foldable helicopter blades

Info

Publication number
AU7622781A
AU7622781A AU76227/81A AU7622781A AU7622781A AU 7622781 A AU7622781 A AU 7622781A AU 76227/81 A AU76227/81 A AU 76227/81A AU 7622781 A AU7622781 A AU 7622781A AU 7622781 A AU7622781 A AU 7622781A
Authority
AU
Australia
Prior art keywords
positioning
automatic lock
helicopter blades
foldable
foldable 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.)
Granted
Application number
AU76227/81A
Other versions
AU540743B2 (en
Inventor
Kenneth Charles Arifian
Donald Wayne Fowler
Roderick Alexander Maclennan
William Joseph Mulvey
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
Priority claimed from US06/195,723 external-priority patent/US4376979A/en
Priority claimed from US06/195,808 external-priority patent/US4354234A/en
Application filed by United Technologies Corp filed Critical United Technologies Corp
Publication of AU7622781A publication Critical patent/AU7622781A/en
Application granted granted Critical
Publication of AU540743B2 publication Critical patent/AU540743B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C27/00—Rotorcraft; Rotors peculiar thereto
    • B64C27/54—Mechanisms for controlling blade adjustment or movement relative to rotor head, e.g. lag-lead movement
    • 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)
  • Toys (AREA)
  • Transmission Devices (AREA)
AU76227/81A 1980-10-10 1981-10-09 Automatic lock-positioning of foldable helicopter blades Ceased AU540743B2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US06/195,723 US4376979A (en) 1980-10-10 1980-10-10 Updated lock-positioning of foldable helicopter blades
US06/195,808 US4354234A (en) 1980-10-10 1980-10-10 Automatic lock-positioning of foldable helicopter blades
US195808 1980-10-10
US195723 1980-10-10

Publications (2)

Publication Number Publication Date
AU7622781A true AU7622781A (en) 1982-04-22
AU540743B2 AU540743B2 (en) 1984-11-29

Family

ID=26891271

Family Applications (1)

Application Number Title Priority Date Filing Date
AU76227/81A Ceased AU540743B2 (en) 1980-10-10 1981-10-09 Automatic lock-positioning of foldable helicopter blades

Country Status (8)

Country Link
AU (1) AU540743B2 (en)
CA (1) CA1161413A (en)
CH (1) CH652673A5 (en)
DE (1) DE3139720C2 (en)
ES (1) ES506143A0 (en)
FR (1) FR2491865A1 (en)
GB (1) GB2085194B (en)
IT (1) IT1138938B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4696445A (en) * 1986-09-18 1987-09-29 United Technologies Corporation Collective control system for a helicopter
AU587363B1 (en) * 1988-07-27 1989-08-10 Richard Henry Tollervey Improvements to helicopter rotor blades
FR2754779B1 (en) * 1996-10-22 1998-12-31 Eurocopter France METHOD FOR FOLDING THE BLADES OF A MAIN ROTOR OF A GIRAVION AND DEVICE FOR IMPLEMENTING SAME
FR2931132B1 (en) 2008-05-19 2010-04-23 Eurocopter France ASSISTED CONTROL SYSTEM OF A GIRAVON
US9682771B2 (en) 2013-08-14 2017-06-20 Sikorsky Aircraft Corporation Controlling rotor blades of a swashplateless rotor
CN114692291B (en) * 2021-12-29 2024-09-06 中国航空工业集团公司西安飞机设计研究所 Longitudinal aerodynamic balancing method of propeller aircraft considering gravity center influence
CN114465065B (en) * 2022-01-06 2023-11-03 广东汇天航空航天科技有限公司 Aircraft main shaft slip ring device, aircraft rotor system and aircraft
CN114802739B (en) * 2022-06-09 2023-04-07 广东汇天航空航天科技有限公司 Rotor positioning method for aircraft, aircraft and storage medium

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3698662A (en) * 1970-10-12 1972-10-17 Lockheed Aircraft Corp Apparatus and method for sequencing the folding and unfolding of rotor blades in a compound vehicle
US4103848A (en) * 1977-03-08 1978-08-01 United Technologies Corporation Variable incidence helicopter stabilator and fail safe actuator
US4284387A (en) * 1979-05-02 1981-08-18 United Technologies Corp. Blade fold restraint system

Also Published As

Publication number Publication date
IT8124415A0 (en) 1981-10-09
GB2085194A (en) 1982-04-21
ES8206331A1 (en) 1982-08-16
AU540743B2 (en) 1984-11-29
IT1138938B (en) 1986-09-17
FR2491865A1 (en) 1982-04-16
DE3139720A1 (en) 1982-05-19
GB2085194B (en) 1984-03-07
FR2491865B1 (en) 1983-12-23
DE3139720C2 (en) 1994-02-10
ES506143A0 (en) 1982-08-16
CH652673A5 (en) 1985-11-29
CA1161413A (en) 1984-01-31

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