GB1190259A - Improvements in Rotor Assemblies for a Rotor Craft - Google Patents

Improvements in Rotor Assemblies for a Rotor Craft

Info

Publication number
GB1190259A
GB1190259A GB5325567A GB5325567A GB1190259A GB 1190259 A GB1190259 A GB 1190259A GB 5325567 A GB5325567 A GB 5325567A GB 5325567 A GB5325567 A GB 5325567A GB 1190259 A GB1190259 A GB 1190259A
Authority
GB
United Kingdom
Prior art keywords
rotor
blade
pitch change
sleeve
tension bar
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
GB5325567A
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.)
Bolkow GmbH
Original Assignee
Bolkow GmbH
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 Bolkow GmbH filed Critical Bolkow GmbH
Publication of GB1190259A publication Critical patent/GB1190259A/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
    • B64C27/327—Retention means relieving the stress from the arm, e.g. tie-bars

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Laminated Bodies (AREA)
  • Centrifugal Separators (AREA)

Abstract

1,190,259. Rotors for rotorcraft. BOLKOW G.m.b.H. 22 Nov., 1967 [1 July, 1967], No. 53255/67. Heading B7W. A rigid rotor for a rotorcraft comprises a rotor head 1 having bearing sleeves 4 in each of which is mounted rotatably for pitch change a rotor shank sleeve 5 rigidly attached to a rotor blade 8, the sleeve 5 having an outwardly facing shoulder 10 against which rests a clamping device 9 which undergoes pitch change movement with the sleeve 5, and to which is secured a laminated tension bar 11, the other end of which is secured to an element 12 mounted in the rotor head coaxial with the axis of rotation of the rotor. Where there are an even number of blades, at least four, the laminations of the tension bar from one blade may extend to the clamping unit of the opposite blade. The laminations of one tension bar may alternate with those of the other bars at the centre of the rotor head, where each lamination may be separated from the next by a low friction layer, e.g. a foil of P.T.F.E. Each blade may have a pitch change horn 18 for attachment to a known control rod and swash plate pitch change mechanism.
GB5325567A 1967-07-01 1967-11-22 Improvements in Rotor Assemblies for a Rotor Craft Expired GB1190259A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB0093285 1967-07-01

Publications (1)

Publication Number Publication Date
GB1190259A true GB1190259A (en) 1970-04-29

Family

ID=6986870

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5325567A Expired GB1190259A (en) 1967-07-01 1967-11-22 Improvements in Rotor Assemblies for a Rotor Craft

Country Status (2)

Country Link
DE (1) DE1531355B1 (en)
GB (1) GB1190259A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3810713A (en) * 1971-12-13 1974-05-14 Westland Aircraft Ltd Helicopter rotor systems
US3824037A (en) * 1971-10-12 1974-07-16 Messerschmitt Boelkow Blohm Suspension of rotor blades on the rotor head of a rotorcraft without the use of flapping or drag hinges
US3999887A (en) * 1975-07-09 1976-12-28 Lord Corporation Propeller assembly
US4047839A (en) * 1976-05-28 1977-09-13 United Technologies Corporation Torque reacting means for the hubs of cross beam rotors
US4104003A (en) * 1975-05-14 1978-08-01 Societe Anonyme Dite Societe Nationale Industrielle Aerospatiale Rotor arrangement for rotary wing aircraft
US4153390A (en) * 1976-08-25 1979-05-08 Messerschmitt-Boelkow-Blohm Gesellschaft Mit Beschrankter Haftung Helicopter rotor structure
US4183718A (en) * 1976-12-11 1980-01-15 Messerschmitt-Bolkow-Blohm Gmbh Rotor for a rotary wing aircraft
US4195967A (en) * 1976-10-26 1980-04-01 Messerschmitt-Boelkow-Blohm Gmbh Rotor free of flapping hinges and free of lead-lag hinges
US4281966A (en) * 1978-07-07 1981-08-04 Societe Nationale Industrielle Aerospatiale Multi-blade propellers
EP0521792A1 (en) * 1991-07-03 1993-01-07 AEROSPATIALE Société Nationale Industrielle Rotary wing aircraft rotor head, rigid in drag and articulated in pitch and flapping

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB819214A (en) * 1955-11-17 1959-09-02 Edward Burke Wilford Rotary wing aircraft
US3261407A (en) * 1964-08-05 1966-07-19 Lockheed Aircraft Corp Helicopter rotor system

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3824037A (en) * 1971-10-12 1974-07-16 Messerschmitt Boelkow Blohm Suspension of rotor blades on the rotor head of a rotorcraft without the use of flapping or drag hinges
US3810713A (en) * 1971-12-13 1974-05-14 Westland Aircraft Ltd Helicopter rotor systems
US4104003A (en) * 1975-05-14 1978-08-01 Societe Anonyme Dite Societe Nationale Industrielle Aerospatiale Rotor arrangement for rotary wing aircraft
US3999887A (en) * 1975-07-09 1976-12-28 Lord Corporation Propeller assembly
US4047839A (en) * 1976-05-28 1977-09-13 United Technologies Corporation Torque reacting means for the hubs of cross beam rotors
US4153390A (en) * 1976-08-25 1979-05-08 Messerschmitt-Boelkow-Blohm Gesellschaft Mit Beschrankter Haftung Helicopter rotor structure
US4195967A (en) * 1976-10-26 1980-04-01 Messerschmitt-Boelkow-Blohm Gmbh Rotor free of flapping hinges and free of lead-lag hinges
US4183718A (en) * 1976-12-11 1980-01-15 Messerschmitt-Bolkow-Blohm Gmbh Rotor for a rotary wing aircraft
US4281966A (en) * 1978-07-07 1981-08-04 Societe Nationale Industrielle Aerospatiale Multi-blade propellers
EP0521792A1 (en) * 1991-07-03 1993-01-07 AEROSPATIALE Société Nationale Industrielle Rotary wing aircraft rotor head, rigid in drag and articulated in pitch and flapping
FR2678579A1 (en) * 1991-07-03 1993-01-08 Aerospatiale HEAD OF ROTOR OF GIRAVION, RIGID IN TRAINEE AND ARTICULATED IN STEP AND BEAT.

Also Published As

Publication number Publication date
DE1531355B1 (en) 1970-07-23

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Legal Events

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