GB1399704A - Helicopter rotor blade support mountings - Google Patents

Helicopter rotor blade support mountings

Info

Publication number
GB1399704A
GB1399704A GB4375272A GB4375272A GB1399704A GB 1399704 A GB1399704 A GB 1399704A GB 4375272 A GB4375272 A GB 4375272A GB 4375272 A GB4375272 A GB 4375272A GB 1399704 A GB1399704 A GB 1399704A
Authority
GB
United Kingdom
Prior art keywords
band
eye
sleeve
hub
pin
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
GB4375272A
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.)
Airbus Defence and Space GmbH
Original Assignee
Messerschmitt Bolkow Blohm AG
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 Messerschmitt Bolkow Blohm AG filed Critical Messerschmitt Bolkow Blohm AG
Publication of GB1399704A publication Critical patent/GB1399704A/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
    • B64C27/37—Rotors having articulated joints
    • B64C27/45—Rotors having articulated joints with a feathering hinge only
    • 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
    • B64C27/327—Retention means relieving the stress from the arm, e.g. tie-bars

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Centrifugal Separators (AREA)
  • Harvester Elements (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Moulding By Coating Moulds (AREA)

Abstract

1399704 Helicopter rotor MESSERSCHMITT-BOLKOW-BLOHM GmbH 21 Sept 1972 [12 Oct 1971] 43752/72 Heading B7W A helicopter rotor comprises a hub 1 and blades 8 interconnected by laminated ties 11 which are attached to a central body 15 on the hub having a peripheral band 20. Each blade is fixed by a pin 24 in an eye 25 of a sleeve 7 carried by roller bearings 4 and 6 in a sleeve 4 on the hub. Each tie 11 is an endless band around a pin 13 carried in an eye 14 in a member 9 bearing on an abutment 10 on the sleeve 7 and around a pin 16 in an eye 17 in the central body 15. The peripheral band 20, of fibrereinforced plastics material or of wire, prevents the body coming apart in the event of a breakage, although resultant rotor imbalance gives warning of failure; the band is protected by a further band of elastomer. The body 15 has peripheral axial recesses 22, Fig. 3, which ensure that any rupture such as 23 will run to a recess, so that there are no sharp edges to damage the band 20. Each eye 25 of a shank 7 is surrounded by a rim 26 secured by a sleeve 27, and is also provided with axially-extending recesses (28), Fig. 4 (not shown), to prevent damage to the rims 26.
GB4375272A 1971-10-12 1972-09-21 Helicopter rotor blade support mountings Expired GB1399704A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2150741A DE2150741C3 (en) 1971-10-12 1971-10-12 The rotor blades of a rotary wing aircraft are suspended from the rotor head without flapping or pivot joints

Publications (1)

Publication Number Publication Date
GB1399704A true GB1399704A (en) 1975-07-02

Family

ID=5822102

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4375272A Expired GB1399704A (en) 1971-10-12 1972-09-21 Helicopter rotor blade support mountings

Country Status (5)

Country Link
US (1) US3824037A (en)
DE (1) DE2150741C3 (en)
FR (1) FR2156182B1 (en)
GB (1) GB1399704A (en)
IT (1) IT968834B (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3942910A (en) * 1974-05-13 1976-03-09 Textron, Inc. Grip-yoke assembly with a redundant centrifugal load support
DE2648343C3 (en) * 1976-10-26 1981-06-19 Messerschmitt-Bölkow-Blohm GmbH, 8000 München Flapping and swivel-less rotor for rotary wing aircraft
DE2656296C3 (en) * 1976-12-11 1980-10-16 Messerschmitt-Boelkow-Blohm Gmbh, 8000 Muenchen Rotor for a rotary wing aircraft
US4264277A (en) * 1978-05-26 1981-04-28 The Boeing Company Redundant rotor blade retention system
FR2442991A1 (en) * 1978-11-30 1980-06-27 Vibrachoc Sa VIBRATION ISOLATOR
IT1143358B (en) * 1981-02-05 1986-10-22 Agusta Aeronaut Costr COMPOSITE HUB OF A HELICOPTER ROTOR
IT1155132B (en) * 1982-03-11 1987-01-21 Agusta Aeronaut Costr HELICOPTER ROTOR
IT1155131B (en) * 1982-03-11 1987-01-21 Agusta Aeronaut Costr HELICOPTER ROTOR HUB
US4545733A (en) * 1982-03-18 1985-10-08 Messerschmitt-Boelkow-Blohm Gesellschaft Mit Beschraenkter Haftung Apparatus for adjusting the tracking of the blades in a rotor, especially for a rotary wing aircraft
FR2529860B1 (en) * 1982-07-08 1987-01-02 Aerospatiale HUB PLATE, MANUFACTURING METHOD AND ROTOR HUB OF A GIRAVION EQUIPPED WITH SUCH PLATES
FR2542695B1 (en) * 1983-03-18 1985-07-26 Aerospatiale MULTI-BLADE PROPELLER WITH VARIABLE PITCH WITH BLADES IN COMPOSITE MATERIALS INDIVIDUALLY REMOVABLE, PROCESS FOR MANUFACTURING SUCH BLADES AND BLADES THUS REALIZED
US5340279A (en) * 1992-06-22 1994-08-23 United Technologies Corporation Snubber assembly for a rotor assembly having ducted, coaxial counter-rotating rotors
US6981844B2 (en) * 2003-10-08 2006-01-03 Hamilton Sundstrand Cyclic actuation system for a controllable pitch propeller and a method of providing aircraft control therewith
US20180002002A1 (en) * 2016-02-22 2018-01-04 Sikorsky Aircraft Corporation Rotor assembly including a one piece molding rotor hub

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1531355B1 (en) * 1967-07-01 1970-07-23 Bolkow Gmbh hinge-free and swivel-free suspension of the red leaves of a rotary aircraft on the roterkopf.
FR1542617A (en) * 1967-07-31 1968-10-18 Sud Aviation Improvements to rotors for rotary-wing aerodynes
FR1580399A (en) * 1968-07-04 1969-09-05
FR96059E (en) * 1968-10-30 1972-05-19 Sud Aviation Improvements made to rotors for rotary wing aerodynes.
FR2041762B1 (en) * 1969-05-28 1973-11-16 Aerospatiale
US3625634A (en) * 1969-12-10 1971-12-07 Gen Motors Corp Turbomachine rotor

Also Published As

Publication number Publication date
US3824037A (en) 1974-07-16
DE2150741C3 (en) 1973-11-22
DE2150741B2 (en) 1973-05-03
DE2150741A1 (en) 1973-05-30
IT968834B (en) 1974-03-20
FR2156182B1 (en) 1976-08-20
FR2156182A1 (en) 1973-05-25

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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