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FR2338845A1 - Helicopter rotor blade feathering mechanism - has fixed pitch helical drive and swinging control blade arrangement - Google Patents

Helicopter rotor blade feathering mechanism - has fixed pitch helical drive and swinging control blade arrangement

Info

Publication number
FR2338845A1
FR2338845A1 FR7602012A FR7602012A FR2338845A1 FR 2338845 A1 FR2338845 A1 FR 2338845A1 FR 7602012 A FR7602012 A FR 7602012A FR 7602012 A FR7602012 A FR 7602012A FR 2338845 A1 FR2338845 A1 FR 2338845A1
Authority
FR
France
Prior art keywords
helical drive
fixed pitch
helicopter rotor
rotor blade
pitch helical
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.)
Withdrawn
Application number
FR7602012A
Other languages
French (fr)
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR7602012A priority Critical patent/FR2338845A1/en
Publication of FR2338845A1 publication Critical patent/FR2338845A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C27/00—Rotorcraft; Rotors peculiar thereto
    • B64C27/82—Rotorcraft; Rotors peculiar thereto characterised by the provision of an auxiliary rotor or fluid-jet device for counter-balancing lifting rotor torque or changing direction of rotorcraft
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C27/00—Rotorcraft; Rotors peculiar thereto
    • B64C27/82—Rotorcraft; Rotors peculiar thereto characterised by the provision of an auxiliary rotor or fluid-jet device for counter-balancing lifting rotor torque or changing direction of rotorcraft
    • B64C2027/8254—Shrouded tail rotors, e.g. "Fenestron" fans
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C27/00—Rotorcraft; Rotors peculiar thereto
    • B64C27/82—Rotorcraft; Rotors peculiar thereto characterised by the provision of an auxiliary rotor or fluid-jet device for counter-balancing lifting rotor torque or changing direction of rotorcraft
    • B64C2027/8263—Rotorcraft; Rotors peculiar thereto characterised by the provision of an auxiliary rotor or fluid-jet device for counter-balancing lifting rotor torque or changing direction of rotorcraft comprising in addition rudders, tails, fins, or the like
    • B64C2027/8272—Rotorcraft; Rotors peculiar thereto characterised by the provision of an auxiliary rotor or fluid-jet device for counter-balancing lifting rotor torque or changing direction of rotorcraft comprising in addition rudders, tails, fins, or the like comprising fins, or movable rudders

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

A helicopter rotor blade control system includes a helical drive with its driving shaft (5) connected to a control motor, this helical drive having a fixed pitch. This is located at the centre of a housing (3) supported by shaped arms (2) inside a ring (1) having a aerofoil cross section. These arms include blades (6) mounted on bearings at each end (7), so that they can turn about their horizontal axis, controlled by a plate (8) connected to a control cable operated by the pilot. These blades can be vertical or sloping, or moved to an overlapping horizontal alignment. The system gives a stability to the steering operation and acts as a safety device.
FR7602012A 1976-01-26 1976-01-26 Helicopter rotor blade feathering mechanism - has fixed pitch helical drive and swinging control blade arrangement Withdrawn FR2338845A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7602012A FR2338845A1 (en) 1976-01-26 1976-01-26 Helicopter rotor blade feathering mechanism - has fixed pitch helical drive and swinging control blade arrangement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7602012A FR2338845A1 (en) 1976-01-26 1976-01-26 Helicopter rotor blade feathering mechanism - has fixed pitch helical drive and swinging control blade arrangement

Publications (1)

Publication Number Publication Date
FR2338845A1 true FR2338845A1 (en) 1977-08-19

Family

ID=9168368

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7602012A Withdrawn FR2338845A1 (en) 1976-01-26 1976-01-26 Helicopter rotor blade feathering mechanism - has fixed pitch helical drive and swinging control blade arrangement

Country Status (1)

Country Link
FR (1) FR2338845A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2683504A1 (en) * 1991-11-07 1993-05-14 Aerospatiale Anti-torque system with rear rotor for a helicopter
FR2689854A1 (en) * 1992-04-14 1993-10-15 Eurocopter France Monorotor helicopter with mixed anti-torque system and method for counteracting the torque induced by this monorotor.
FR2769284A1 (en) * 1997-10-07 1999-04-09 Eurocopter France Control device of helicopter tail rotor aerodynamic steering surface
FR2769285A1 (en) * 1997-10-07 1999-04-09 Eurocopter France Control device for helicopter tail rotor
EP0867364A3 (en) * 1997-03-26 1999-07-28 Advanced Technology Institute of Commuter-Helicopter, Ltd. Compensation apparatus for main rotor torque
EP2883789A1 (en) 2013-12-10 2015-06-17 Airbus Helicopters Method for optimising the noise emitted by an auxiliary rotor and the performance of a rotorcraft, and rotorcraft

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2683504A1 (en) * 1991-11-07 1993-05-14 Aerospatiale Anti-torque system with rear rotor for a helicopter
US5251847A (en) * 1991-11-07 1993-10-12 Aerospatiale Societe Nationale Industrielle Tail rotor anti-torque system for a helicopter
FR2689854A1 (en) * 1992-04-14 1993-10-15 Eurocopter France Monorotor helicopter with mixed anti-torque system and method for counteracting the torque induced by this monorotor.
EP0566452A1 (en) * 1992-04-14 1993-10-20 EUROCOPTER FRANCE, Société Anonyme dite: Single-rotor helicopter with mixed counter-torque system and method to counter the torque induced by this single rotor
US5388785A (en) * 1992-04-14 1995-02-14 Societe Anonyme Dite: Eurocopter France Single-rotor helicopter having a compound anti-torque system, and a method of countering the torque induced by said single rotor
EP0867364A3 (en) * 1997-03-26 1999-07-28 Advanced Technology Institute of Commuter-Helicopter, Ltd. Compensation apparatus for main rotor torque
FR2769284A1 (en) * 1997-10-07 1999-04-09 Eurocopter France Control device of helicopter tail rotor aerodynamic steering surface
FR2769285A1 (en) * 1997-10-07 1999-04-09 Eurocopter France Control device for helicopter tail rotor
US6142413A (en) * 1997-10-07 2000-11-07 Eurocopter Device for control of an aerodynamic steering surface of a helicopter
US6290171B1 (en) 1997-10-07 2001-09-18 Eurocopter Device for controlling a helicopter hybrid countertorque system
EP2883789A1 (en) 2013-12-10 2015-06-17 Airbus Helicopters Method for optimising the noise emitted by an auxiliary rotor and the performance of a rotorcraft, and rotorcraft
US9725164B2 (en) 2013-12-10 2017-08-08 Airbus Helicopters Method for controlling rotorcraft airfoil to minimize auxiliary rotor noise and enhance rotorcraft performance

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Legal Events

Date Code Title Description
ST Notification of lapse
TP Transmission of property