FR2377324A1 - Helicopter rotor construction with even number of blades - has each pair having torsion elastic connection made as integral unit in form of flat rod - Google Patents

Helicopter rotor construction with even number of blades - has each pair having torsion elastic connection made as integral unit in form of flat rod

Info

Publication number
FR2377324A1
FR2377324A1 FR7800258A FR7800258A FR2377324A1 FR 2377324 A1 FR2377324 A1 FR 2377324A1 FR 7800258 A FR7800258 A FR 7800258A FR 7800258 A FR7800258 A FR 7800258A FR 2377324 A1 FR2377324 A1 FR 2377324A1
Authority
FR
France
Prior art keywords
rotor
blades
elastic connection
torsion elastic
pair
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
FR7800258A
Other languages
French (fr)
Other versions
FR2377324B1 (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.)
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 FR2377324A1 publication Critical patent/FR2377324A1/en
Application granted granted Critical
Publication of FR2377324B1 publication Critical patent/FR2377324B1/fr
Granted 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
    • B64C27/33—Rotors having flexing arms

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Centrifugal Separators (AREA)

Abstract

A rotor for a helicopter has an even number of rotor blades which are supported in pairs lying diametrically opposite to each other on the rotor head. The support is provided by a single angle bearing which permits rotation movement with each pair of rotor blades having a torsion elastic connection on the root side between the blades. The torsion elastic connection with both corresponding rotor blades (1) is combined into an integral construction unit which is supported in the root area of the appropriate rotor blade by a bearing (3) on the rotor head which permits the blade angle and blade impact movements. The torsion elastic connection is made as a rod formed flat at right angles to the rotor plane.
FR7800258A 1977-01-15 1978-01-05 Helicopter rotor construction with even number of blades - has each pair having torsion elastic connection made as integral unit in form of flat rod Granted FR2377324A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19772701519 DE2701519C3 (en) 1977-01-15 1977-01-15 Rotor for a rotary wing aircraft

Publications (2)

Publication Number Publication Date
FR2377324A1 true FR2377324A1 (en) 1978-08-11
FR2377324B1 FR2377324B1 (en) 1984-03-09

Family

ID=5998746

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7800258A Granted FR2377324A1 (en) 1977-01-15 1978-01-05 Helicopter rotor construction with even number of blades - has each pair having torsion elastic connection made as integral unit in form of flat rod

Country Status (2)

Country Link
DE (1) DE2701519C3 (en)
FR (1) FR2377324A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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 (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2903524C2 (en) * 1979-01-31 1982-02-25 Messerschmitt-Bölkow-Blohm GmbH, 8000 München Flapping and swivel jointless connection of rotor blades of a rotary wing aircraft
DE2932441C2 (en) * 1979-08-10 1983-10-06 Messerschmitt-Boelkow-Blohm Gmbh, 8000 Muenchen Damping device for a rotor blade

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3880551A (en) * 1973-11-15 1975-04-29 Boeing Co Rotary head assembly for rotary wing aircraft
FR2251474A1 (en) * 1973-11-15 1975-06-13 Boeing Co
FR2285298A1 (en) * 1974-09-19 1976-04-16 Aerospatiale TAIL ROTOR ARRANGEMENT FOR GIRAVIONS

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3880551A (en) * 1973-11-15 1975-04-29 Boeing Co Rotary head assembly for rotary wing aircraft
FR2251474A1 (en) * 1973-11-15 1975-06-13 Boeing Co
FR2285298A1 (en) * 1974-09-19 1976-04-16 Aerospatiale TAIL ROTOR ARRANGEMENT FOR GIRAVIONS

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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.
US5474424A (en) * 1991-07-03 1995-12-12 Aerospatiale Societe Nationale Industrielle Rotorcraft rotor head, which is rigid in drag and articulated in pitch and flapping

Also Published As

Publication number Publication date
FR2377324B1 (en) 1984-03-09
DE2701519C3 (en) 1980-11-20
DE2701519A1 (en) 1978-07-20
DE2701519B2 (en) 1980-04-03

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Legal Events

Date Code Title Description
ST Notification of lapse