GB1500007A - Rotor for rotary wing aircraft - Google Patents

Rotor for rotary wing aircraft

Info

Publication number
GB1500007A
GB1500007A GB3701674A GB3701674A GB1500007A GB 1500007 A GB1500007 A GB 1500007A GB 3701674 A GB3701674 A GB 3701674A GB 3701674 A GB3701674 A GB 3701674A GB 1500007 A GB1500007 A GB 1500007A
Authority
GB
United Kingdom
Prior art keywords
blade
wing aircraft
hub
blades
folding
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
GB3701674A
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.)
Westland Group PLC
Original Assignee
Westland Aircraft Ltd
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 Westland Aircraft Ltd filed Critical Westland Aircraft Ltd
Priority to GB3701674A priority Critical patent/GB1500007A/en
Priority to DE19752535028 priority patent/DE2535028A1/en
Priority to IT5098775A priority patent/IT1044418B/en
Priority to FR7525614A priority patent/FR2282367A1/en
Priority to JP10128275A priority patent/JPS5833160B2/en
Publication of GB1500007A publication Critical patent/GB1500007A/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
    • B64C27/322—Blade travel limiting devices, e.g. droop stops
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C27/00—Rotorcraft; Rotors peculiar thereto
    • B64C27/32—Rotors
    • 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
    • B64C27/46—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)
  • Tires In General (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Actuator (AREA)

Abstract

1500007 Rotary wing aircraft WESTLAND AIRCRAFT Ltd 23 July 1975 [22 Aug 1974] 37016/74 Heading B7W A rotary-wing aircraft having folding blades has elastomeric bearings 19 for each blade, and to prevent stressing of the bearings when the blades 11 are folded about pivots 24, the blade root portion 14 is locked to the hub 13 prior to folding. The root portion 14 has a cylinder 23 housing an hydraulic actuator 28 and a piston 29 having teeth 32 complementary with teeth 33 provided on the hub. Splines 30 prevent rotation of the postion in the cylinder, and the blade is locked by extending the actuator. The actual folding of the blade is effected by an hydraulically operable toothed quadrant 26 which meshes with a toothed quadrant 27 associated with the pivot 24. To prevent unwanted movements of the blades when the hub is at rest, a blade droop stop and anti-flap mechanism (38), Fig. 1 (not shown), is provided.
GB3701674A 1974-08-22 1974-08-22 Rotor for rotary wing aircraft Expired GB1500007A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB3701674A GB1500007A (en) 1974-08-22 1974-08-22 Rotor for rotary wing aircraft
DE19752535028 DE2535028A1 (en) 1974-08-22 1975-08-06 ROTOR FOR ROTARY WING AIRPLANES
IT5098775A IT1044418B (en) 1974-08-22 1975-08-19 IMPROVEMENT IN ROTORS FOR ROTATING WING AIRCRAFTS
FR7525614A FR2282367A1 (en) 1974-08-22 1975-08-19 ROTOR FOR ROTATING AIRCRAFT AIRCRAFT
JP10128275A JPS5833160B2 (en) 1974-08-22 1975-08-22 It's time to start working.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3701674A GB1500007A (en) 1974-08-22 1974-08-22 Rotor for rotary wing aircraft

Publications (1)

Publication Number Publication Date
GB1500007A true GB1500007A (en) 1978-02-08

Family

ID=10393046

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3701674A Expired GB1500007A (en) 1974-08-22 1974-08-22 Rotor for rotary wing aircraft

Country Status (5)

Country Link
JP (1) JPS5833160B2 (en)
DE (1) DE2535028A1 (en)
FR (1) FR2282367A1 (en)
GB (1) GB1500007A (en)
IT (1) IT1044418B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7828525B2 (en) 2003-08-27 2010-11-09 Bell Helicopter Textron Inc. Soft in-plane tiltrotor hub

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2025338B (en) * 1978-06-02 1982-08-04 Aerospatiale Helicopterrotor
FR2427251A1 (en) * 1978-06-02 1979-12-28 Aerospatiale Helicopter rotor with rigid hub - has each blade mounted via laminated spherical bearings and strut
FR2516891A1 (en) * 1981-11-25 1983-05-27 Aerospatiale ROTOR FOR GIRAVIONS, WITH ARTICULATIONS INTEGRATED INTO THE BLADE FOOT
FR2551723B1 (en) * 1983-09-08 1985-12-13 Aerospatiale DEVICE WITH RETRACTABLE STOPPERS FOR LIMITING THE BEATS OF THE BLADES OF A MAIN ROTOR OF A GIRAVION
EP0600797A1 (en) * 1992-12-03 1994-06-08 Lucas France S.A. Flapping locking device for helicopter rotor blades

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7828525B2 (en) 2003-08-27 2010-11-09 Bell Helicopter Textron Inc. Soft in-plane tiltrotor hub

Also Published As

Publication number Publication date
IT1044418B (en) 1980-03-20
DE2535028A1 (en) 1976-03-18
FR2282367B1 (en) 1979-09-07
JPS5147798A (en) 1976-04-23
FR2282367A1 (en) 1976-03-19
JPS5833160B2 (en) 1983-07-18

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Legal Events

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