FR3072939B1 - VARIABLE COLLECTIVE STEP ROTOR AND AIRCRAFT - Google Patents

VARIABLE COLLECTIVE STEP ROTOR AND AIRCRAFT Download PDF

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Publication number
FR3072939B1
FR3072939B1 FR1771153A FR1771153A FR3072939B1 FR 3072939 B1 FR3072939 B1 FR 3072939B1 FR 1771153 A FR1771153 A FR 1771153A FR 1771153 A FR1771153 A FR 1771153A FR 3072939 B1 FR3072939 B1 FR 3072939B1
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France
Prior art keywords
pitch
hub
rotation
axis
control plate
Prior art date
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Active
Application number
FR1771153A
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French (fr)
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FR3072939A1 (en
Inventor
Sylvain Berthalon
Olivier Barais
Philippe Cabrit
Jean Romain Bihel
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 Helicopters SAS
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Airbus Helicopters SAS
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Publication date
Application filed by Airbus Helicopters SAS filed Critical Airbus Helicopters SAS
Priority to FR1771153A priority Critical patent/FR3072939B1/en
Publication of FR3072939A1 publication Critical patent/FR3072939A1/en
Application granted granted Critical
Publication of FR3072939B1 publication Critical patent/FR3072939B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C27/00—Rotorcraft; Rotors peculiar thereto
    • B64C27/54—Mechanisms for controlling blade adjustment or movement relative to rotor head, e.g. lag-lead movement
    • B64C27/58—Transmitting means, e.g. interrelated with initiating means or means acting on blades
    • B64C27/59—Transmitting means, e.g. interrelated with initiating means or means acting on blades mechanical
    • B64C27/605—Transmitting means, e.g. interrelated with initiating means or means acting on blades mechanical including swash plate, spider or cam mechanisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C27/00—Rotorcraft; Rotors peculiar thereto
    • B64C27/54—Mechanisms for controlling blade adjustment or movement relative to rotor head, e.g. lag-lead movement
    • B64C27/78—Mechanisms for controlling blade adjustment or movement relative to rotor head, e.g. lag-lead movement in association with pitch adjustment of blades of anti-torque rotor

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

Abstract

La présente invention concerne un rotor à pas collectif variable mobile en rotation autour d'un axe de rotation (AXROT). Ledit rotor à pas collectif variable comprend une pluralité de pales montées individuellement mobile sur le moyeu (10) autour d'un axe de variation de pas (AXPAS). Un mécanisme de manœuvre comprend une tige de commande (31) montée mobile en translation par rapport au moyeu (10) et un plateau de commande monté tournant sur la tige de commande (31). Des bielles de pas (60) sont articulées à des bras (42) du plateau de commande et à des leviers de pas des pales. Au moins une dite bielle de pas (60) est articulée à un dit bras (42) par une liaison pivot (70) et à un dit levier de pas par une liaison rotule (63), le plateau de commande étant libre en rotation autour dudit axe de rotation (AXROT) par rapport au moyeu (10).The present invention relates to a rotor with variable collective pitch movable in rotation about an axis of rotation (AXROT). Said variable collective pitch rotor comprises a plurality of blades individually mounted to move on the hub (10) about a pitch variation axis (AXPAS). An operating mechanism comprises a control rod (31) mounted to move in translation relative to the hub (10) and a control plate rotatably mounted on the control rod (31). Pitch connecting rods (60) are articulated to arms (42) of the control plate and to pitch levers of the blades. At least one said pitch connecting rod (60) is articulated to a said arm (42) by a pivot connection (70) and to a said pitch lever by a ball joint (63), the control plate being free to rotate around of said axis of rotation (AXROT) relative to the hub (10).

FR1771153A 2017-10-31 2017-10-31 VARIABLE COLLECTIVE STEP ROTOR AND AIRCRAFT Active FR3072939B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR1771153A FR3072939B1 (en) 2017-10-31 2017-10-31 VARIABLE COLLECTIVE STEP ROTOR AND AIRCRAFT

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1771153A FR3072939B1 (en) 2017-10-31 2017-10-31 VARIABLE COLLECTIVE STEP ROTOR AND AIRCRAFT
FR1771153 2017-10-31

Publications (2)

Publication Number Publication Date
FR3072939A1 FR3072939A1 (en) 2019-05-03
FR3072939B1 true FR3072939B1 (en) 2021-11-26

Family

ID=60627950

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1771153A Active FR3072939B1 (en) 2017-10-31 2017-10-31 VARIABLE COLLECTIVE STEP ROTOR AND AIRCRAFT

Country Status (1)

Country Link
FR (1) FR3072939B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3757002B1 (en) * 2019-06-26 2021-11-03 LEONARDO S.p.A. Anti-torque rotor for a helicopter

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2818123A (en) * 1955-06-23 1957-12-31 Hiller Helicopters Rotary wing aircraft
US3637321A (en) * 1968-12-04 1972-01-25 Andrei Vladimirovich Nekrasov Tail rotor of a helicopter
AU2467992A (en) * 1991-08-02 1993-03-02 Boeing Company, The Ducted fan and pitch controls for tail rotor of rotary wing aircraft
FR2764577B1 (en) * 1997-06-13 1999-08-20 Eurocopter France ROTOR OF A GIRAVION WITH BEAT STOPS FIXED ON BLADES AND HUB, AND WITH LAW NOT DETERMINED
FR2946318B1 (en) * 2009-06-04 2012-11-16 Eurocopter France MECHANICAL DEVICE FOR COMBINING A FIRST AND A SECOND ORDER ORDER AND AN AIRCRAFT PROVIDED WITH SUCH A DEVICE.

Also Published As

Publication number Publication date
FR3072939A1 (en) 2019-05-03

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