GB2085194B - Automatic-lock positioning of foldable helicopeter blades - Google Patents

Automatic-lock positioning of foldable helicopeter blades

Info

Publication number
GB2085194B
GB2085194B GB8129608A GB8129608A GB2085194B GB 2085194 B GB2085194 B GB 2085194B GB 8129608 A GB8129608 A GB 8129608A GB 8129608 A GB8129608 A GB 8129608A GB 2085194 B GB2085194 B GB 2085194B
Authority
GB
United Kingdom
Prior art keywords
helicopeter
foldable
blades
automatic
lock positioning
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
GB8129608A
Other versions
GB2085194A (en
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 GB2085194A publication Critical patent/GB2085194A/en
Application granted granted Critical
Publication of GB2085194B publication Critical patent/GB2085194B/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
    • B64C27/54—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)
GB8129608A 1980-10-10 1981-10-01 Automatic-lock positioning of foldable helicopeter blades Expired GB2085194B (en)

Applications Claiming Priority (2)

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

Publications (2)

Publication Number Publication Date
GB2085194A GB2085194A (en) 1982-04-21
GB2085194B true GB2085194B (en) 1984-03-07

Family

ID=26891271

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8129608A Expired GB2085194B (en) 1980-10-10 1981-10-01 Automatic-lock positioning of foldable helicopeter blades

Country Status (8)

Country Link
AU (1) AU540743B2 (en)
CA (1) CA1161413A (en)
CH (1) CH652673A5 (en)
DE (1) DE3139720C2 (en)
ES (1) ES8206331A1 (en)
FR (1) FR2491865A1 (en)
GB (1) GB2085194B (en)
IT (1) IT1138938B (en)

Families Citing this family (7)

* 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
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
IT1138938B (en) 1986-09-17
GB2085194A (en) 1982-04-21
CA1161413A (en) 1984-01-31
FR2491865A1 (en) 1982-04-16
AU7622781A (en) 1982-04-22
FR2491865B1 (en) 1983-12-23
CH652673A5 (en) 1985-11-29
ES506143A0 (en) 1982-08-16
AU540743B2 (en) 1984-11-29
DE3139720A1 (en) 1982-05-19
ES8206331A1 (en) 1982-08-16
DE3139720C2 (en) 1994-02-10
IT8124415A0 (en) 1981-10-09

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19981001