FR2456034A2 - Helicopter rotor with rigid hub - has each blade mounted via laminated spherical bearings and strut - Google Patents

Helicopter rotor with rigid hub - has each blade mounted via laminated spherical bearings and strut

Info

Publication number
FR2456034A2
FR2456034A2 FR7911585A FR7911585A FR2456034A2 FR 2456034 A2 FR2456034 A2 FR 2456034A2 FR 7911585 A FR7911585 A FR 7911585A FR 7911585 A FR7911585 A FR 7911585A FR 2456034 A2 FR2456034 A2 FR 2456034A2
Authority
FR
France
Prior art keywords
strut
mounted via
blade
blade mounted
helicopter rotor
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
FR7911585A
Other languages
French (fr)
Other versions
FR2456034B2 (en
Inventor
Rene Louis Mouille
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 Group SAS
Original Assignee
Airbus Group SAS
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 Airbus Group SAS filed Critical Airbus Group SAS
Priority to FR7911585A priority Critical patent/FR2456034A2/en
Priority to GB7918301A priority patent/GB2025338B/en
Priority to US06/043,878 priority patent/US4304525A/en
Priority to IN385/DEL/79A priority patent/IN151974B/en
Priority to DE2953675A priority patent/DE2953675C2/en
Priority to IT23223/79A priority patent/IT1121236B/en
Priority to DE2922469A priority patent/DE2922469C2/en
Publication of FR2456034A2 publication Critical patent/FR2456034A2/en
Priority to US06/300,091 priority patent/US4407633A/en
Application granted granted Critical
Publication of FR2456034B2 publication Critical patent/FR2456034B2/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
    • B64C27/51—Damping of blade movements
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Support Of The Bearing (AREA)

Abstract

The strut(7) which connects the blade to the hub is built up from alternate layers of metal strips(7a-7c) and strips(7d-7e) which are made from a tough elastic material with large remanence under deformation and form a frequency adaptor. The ends of the struts are connected via ball joints at one end to the end of the rotor blade(5) and the other end to a point on the hub(1). The strut is always inclined at a small angle to its rotor-blade. The centre of one ball joint(12) is near the axis(d) about which the rotor blade can move up and down.
FR7911585A 1978-06-02 1979-05-08 Helicopter rotor with rigid hub - has each blade mounted via laminated spherical bearings and strut Granted FR2456034A2 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
FR7911585A FR2456034A2 (en) 1979-05-08 1979-05-08 Helicopter rotor with rigid hub - has each blade mounted via laminated spherical bearings and strut
GB7918301A GB2025338B (en) 1978-06-02 1979-05-25 Helicopterrotor
IN385/DEL/79A IN151974B (en) 1978-06-02 1979-05-30
US06/043,878 US4304525A (en) 1978-06-02 1979-05-30 Helicopter rotor
DE2953675A DE2953675C2 (en) 1978-06-02 1979-06-01 Rotor for a rotary wing aircraft
IT23223/79A IT1121236B (en) 1978-06-02 1979-06-01 REVOLVING ROTOR
DE2922469A DE2922469C2 (en) 1978-06-02 1979-06-01 Rotor for a rotary wing aircraft
US06/300,091 US4407633A (en) 1978-06-02 1981-09-08 Helicopter rotor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7911585A FR2456034A2 (en) 1979-05-08 1979-05-08 Helicopter rotor with rigid hub - has each blade mounted via laminated spherical bearings and strut

Publications (2)

Publication Number Publication Date
FR2456034A2 true FR2456034A2 (en) 1980-12-05
FR2456034B2 FR2456034B2 (en) 1983-07-29

Family

ID=9225181

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7911585A Granted FR2456034A2 (en) 1978-06-02 1979-05-08 Helicopter rotor with rigid hub - has each blade mounted via laminated spherical bearings and strut

Country Status (1)

Country Link
FR (1) FR2456034A2 (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2486492A2 (en) * 1977-03-23 1982-01-15 Messerschmitt Boelkow Blohm One-piece fibre reinforced synthetic helicopter rotor hub - has one flange thicker than other to take main blade flap bending stress
FR2516891A1 (en) * 1981-11-25 1983-05-27 Aerospatiale ROTOR FOR GIRAVIONS, WITH ARTICULATIONS INTEGRATED INTO THE BLADE FOOT
US4732540A (en) * 1985-07-22 1988-03-22 Aerospatiale Societe Nationale Industrielle Integrated hub-mast and gyroplane rotor head comprising it
US4749339A (en) * 1985-07-22 1988-06-07 Aerospatiale Societe Nationale Industrielle Integrater hub-mast and gyroplane rotor head comprising it
EP0424267A1 (en) 1989-10-20 1991-04-24 AEROSPATIALE Société Nationale Industrielle Rotary visco-elastic return and lag-damping device for a rotorcraft blade, and rotor head
WO1998056656A1 (en) 1997-06-13 1998-12-17 Eurocopter Gyroplane rotor with double-plate hub and external pitch control
FR2826933A1 (en) 2001-07-04 2003-01-10 Eurocopter France Helicopter rotor blade angular movement shock absorber having two chambers fluid filled with intermediate piston gap calibrated spoke movements absorbing following blade rotation frequency.
FR2835506A1 (en) 2002-02-06 2003-08-08 Eurocopter France DOUBLE PISTON TRAIN SHOCK ABSORBER FOR ROTOR OF ROTOR
EP2803571A1 (en) 2013-05-16 2014-11-19 Airbus Helicopters Resilient hinged connection between a lag-lead damper and a rotor blade

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB713352A (en) * 1951-03-30 1954-08-11 United Aircraft Corp Improvements in or relating to rotary wing aircraft
US2815821A (en) * 1955-03-24 1957-12-10 United Aircraft Corp Helicopter rotor blade connection
FR1358006A (en) * 1963-05-22 1964-04-10 Sud Aviation Swing-hub helicopter blade drag interconnection system with constant velocity transmission
US3504989A (en) * 1967-12-28 1970-04-07 Boeing Co Rotor system
FR2192942A1 (en) * 1972-07-14 1974-02-15 United Aircraft Corp
DE2712706A1 (en) * 1977-03-23 1978-10-19 Messerschmitt Boelkow Blohm Rotary wing aircraft rotor head - has fibre reinforced plastics construction with hub disc sandwiched between two cover plates with spokes and assembly cured as unit

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB713352A (en) * 1951-03-30 1954-08-11 United Aircraft Corp Improvements in or relating to rotary wing aircraft
US2815821A (en) * 1955-03-24 1957-12-10 United Aircraft Corp Helicopter rotor blade connection
FR1358006A (en) * 1963-05-22 1964-04-10 Sud Aviation Swing-hub helicopter blade drag interconnection system with constant velocity transmission
US3504989A (en) * 1967-12-28 1970-04-07 Boeing Co Rotor system
FR2192942A1 (en) * 1972-07-14 1974-02-15 United Aircraft Corp
DE2712706A1 (en) * 1977-03-23 1978-10-19 Messerschmitt Boelkow Blohm Rotary wing aircraft rotor head - has fibre reinforced plastics construction with hub disc sandwiched between two cover plates with spokes and assembly cured as unit

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2486492A2 (en) * 1977-03-23 1982-01-15 Messerschmitt Boelkow Blohm One-piece fibre reinforced synthetic helicopter rotor hub - has one flange thicker than other to take main blade flap bending stress
FR2516891A1 (en) * 1981-11-25 1983-05-27 Aerospatiale ROTOR FOR GIRAVIONS, WITH ARTICULATIONS INTEGRATED INTO THE BLADE FOOT
EP0080920A1 (en) * 1981-11-25 1983-06-08 AEROSPATIALE Société Nationale Industrielle Rotor for rotor craft with articulated joints incorporated in the blade root
US4504193A (en) * 1981-11-25 1985-03-12 Societe Nationale Industrielle Aerospatiale Helicopter rotor with articulation means integrated in the root of the blade
US4732540A (en) * 1985-07-22 1988-03-22 Aerospatiale Societe Nationale Industrielle Integrated hub-mast and gyroplane rotor head comprising it
US4749339A (en) * 1985-07-22 1988-06-07 Aerospatiale Societe Nationale Industrielle Integrater hub-mast and gyroplane rotor head comprising it
EP0424267A1 (en) 1989-10-20 1991-04-24 AEROSPATIALE Société Nationale Industrielle Rotary visco-elastic return and lag-damping device for a rotorcraft blade, and rotor head
WO1998056656A1 (en) 1997-06-13 1998-12-17 Eurocopter Gyroplane rotor with double-plate hub and external pitch control
FR2764578A1 (en) 1997-06-13 1998-12-18 Eurocopter France GIRAVION ROTOR WITH TWO-PLATE HUB AND PARTIALLY EXTERNAL STEP CONTROL
FR2826933A1 (en) 2001-07-04 2003-01-10 Eurocopter France Helicopter rotor blade angular movement shock absorber having two chambers fluid filled with intermediate piston gap calibrated spoke movements absorbing following blade rotation frequency.
FR2835506A1 (en) 2002-02-06 2003-08-08 Eurocopter France DOUBLE PISTON TRAIN SHOCK ABSORBER FOR ROTOR OF ROTOR
EP2803571A1 (en) 2013-05-16 2014-11-19 Airbus Helicopters Resilient hinged connection between a lag-lead damper and a rotor blade
FR3005631A1 (en) * 2013-05-16 2014-11-21 Eurocopter France ELASTIC JOINT CONNECTION BETWEEN A TRAINING DAMPER AND A BLADE OF A ROTOR

Also Published As

Publication number Publication date
FR2456034B2 (en) 1983-07-29

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Legal Events

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