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FR3126017B1 - VARIABLE PITCH BLADE FAN MODULE - Google Patents

VARIABLE PITCH BLADE FAN MODULE

Info

Publication number
FR3126017B1
FR3126017B1 FR2108468A FR2108468A FR3126017B1 FR 3126017 B1 FR3126017 B1 FR 3126017B1 FR 2108468 A FR2108468 A FR 2108468A FR 2108468 A FR2108468 A FR 2108468A FR 3126017 B1 FR3126017 B1 FR 3126017B1
Authority
FR
France
Prior art keywords
blades
cap
fan module
rotating casing
variable pitch
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.)
Active
Application number
FR2108468A
Other languages
French (fr)
Other versions
FR3126017A1 (en
Inventor
Soufien Akachkachy
Gilles Alain Marie Charier
Jean Charles Olivier Roda
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.)
Safran Aircraft Engines SAS
Original Assignee
Safran Aircraft Engines 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 Safran Aircraft Engines SAS filed Critical Safran Aircraft Engines SAS
Priority to FR2108468A priority Critical patent/FR3126017B1/en
Publication of FR3126017A1 publication Critical patent/FR3126017A1/en
Application granted granted Critical
Publication of FR3126017B1 publication Critical patent/FR3126017B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C11/00—Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft
    • B64C11/02—Hub construction
    • B64C11/04—Blade mountings
    • B64C11/06—Blade mountings for variable-pitch blades
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C11/00—Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft
    • B64C11/30—Blade pitch-changing mechanisms
    • B64C11/32—Blade pitch-changing mechanisms mechanical
    • B64C11/325—Blade pitch-changing mechanisms mechanical comprising feathering, braking or stopping systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C11/00—Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft
    • B64C11/30—Blade pitch-changing mechanisms
    • B64C11/32—Blade pitch-changing mechanisms mechanical
    • B64C11/34—Blade pitch-changing mechanisms mechanical automatic
    • B64C11/346—Blade pitch-changing mechanisms mechanical automatic actuated by the centrifugal force or the aerodynamic drag acting on auxiliary masses or surfaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02K—JET-PROPULSION PLANTS
    • F02K1/00—Plants characterised by the form or arrangement of the jet pipe or nozzle; Jet pipes or nozzles peculiar thereto
    • F02K1/54—Nozzles having means for reversing jet thrust
    • F02K1/64—Reversing fan flow
    • F02K1/66—Reversing fan flow using reversing fan blades
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02K—JET-PROPULSION PLANTS
    • F02K3/00—Plants including a gas turbine driving a compressor or a ducted fan
    • F02K3/02—Plants including a gas turbine driving a compressor or a ducted fan in which part of the working fluid by-passes the turbine and combustion chamber
    • F02K3/04—Plants including a gas turbine driving a compressor or a ducted fan in which part of the working fluid by-passes the turbine and combustion chamber the plant including ducted fans, i.e. fans with high volume, low pressure outputs, for augmenting the jet thrust, e.g. of double-flow type
    • F02K3/06—Plants including a gas turbine driving a compressor or a ducted fan in which part of the working fluid by-passes the turbine and combustion chamber the plant including ducted fans, i.e. fans with high volume, low pressure outputs, for augmenting the jet thrust, e.g. of double-flow type with front fan
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/321—Rotors specially for elastic fluids for axial flow pumps for axial flow compressors
    • F04D29/322—Blade mountings
    • F04D29/323—Blade mountings adjustable
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2220/00—Application
    • F05D2220/30—Application in turbines
    • F05D2220/36—Application in turbines specially adapted for the fan of turbofan engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2260/00—Function
    • F05D2260/70—Adjusting of angle of incidence or attack of rotating blades
    • F05D2260/74—Adjusting of angle of incidence or attack of rotating blades by turning around an axis perpendicular the rotor centre line
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2260/00—Function
    • F05D2260/70—Adjusting of angle of incidence or attack of rotating blades
    • F05D2260/77—Adjusting of angle of incidence or attack of rotating blades the adjusting mechanism driven or triggered by centrifugal forces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2260/00—Function
    • F05D2260/70—Adjusting of angle of incidence or attack of rotating blades
    • F05D2260/79—Bearing, support or actuation arrangements therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

L’invention concerne un module de soufflante à pales à calage variable pour un ensemble propulsif d’axe longitudinal (X), comprenant : un carter rotatif (3) portant les pales, etun dispositif (38) de mise en drapeau des pales comprenant au moins un mécanisme (39) ayant un levier (40) solidaire d’une masselotte (43) et un chapeau (70) rapporté sur le carter rotatif, le levier étant articulé par rapport au chapeau par une liaison pivot et étant couplé à une couronne de synchronisation (34) d’un mécanisme de liaison (24) d’un système (22) de changement du calage des pales, les masselottes étant aptes, sous l’effet centrifuge, à être déplacées dans une position dans laquelle la couronne de synchronisation impose une position drapeau aux pales, le chapeau (70) comportant deux parois linéaires (72, 74) successives configurées pour collecter un lubrifiant liquide et évacuer ledit lubrifiant dans une partie aval (71) du carter rotatif. Figure pour l'abrégé : Figure 4The invention relates to a fan module with variable-pitch blades for a propulsion unit with a longitudinal axis (X), comprising: a rotating casing (3) carrying the blades, and a device (38) for feathering the blades comprising at least one mechanism (39) having a lever (40) secured to a flyweight (43) and a cap (70) attached to the rotating casing, the lever being articulated relative to the cap by a pivot connection and being coupled to a synchronization ring (34) of a connection mechanism (24) of a system (22) for changing the pitch of the blades, the flyweights being capable, under the centrifugal effect, of being moved into a position in which the synchronization ring imposes a flag position on the blades, the cap (70) comprising two successive linear walls (72, 74) configured to collect a liquid lubricant and discharge said lubricant into a downstream portion (71) of the rotating casing. Figure for abstract: Figure 4

FR2108468A 2021-08-04 2021-08-04 VARIABLE PITCH BLADE FAN MODULE Active FR3126017B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR2108468A FR3126017B1 (en) 2021-08-04 2021-08-04 VARIABLE PITCH BLADE FAN MODULE

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR2108468A FR3126017B1 (en) 2021-08-04 2021-08-04 VARIABLE PITCH BLADE FAN MODULE
FR2108468 2021-08-04

Publications (2)

Publication Number Publication Date
FR3126017A1 FR3126017A1 (en) 2023-02-10
FR3126017B1 true FR3126017B1 (en) 2025-10-10

Family

ID=77711213

Family Applications (1)

Application Number Title Priority Date Filing Date
FR2108468A Active FR3126017B1 (en) 2021-08-04 2021-08-04 VARIABLE PITCH BLADE FAN MODULE

Country Status (1)

Country Link
FR (1) FR3126017B1 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3055001B1 (en) * 2016-08-10 2022-04-01 Safran Aircraft Engines PITCH CHANGE SYSTEM EQUIPPED WITH MEANS FOR ADJUSTING THE PITCH OF THE BLADE AND CORRESPONDING TURBOMACHINE
FR3059364B1 (en) * 2016-11-30 2018-11-23 Safran Aircraft Engines SYSTEM FOR SUSPENSION OF A FIRST ANNULAR ELEMENT IN A SECOND ANNULAR ELEMENT OF TURBOMACHINE AND CORRESPONDING TURBOMACHINE
FR3066559B1 (en) 2017-05-18 2019-06-07 Safran Aircraft Engines BLOWER MODULE WITH VARIABLE SHAFT BLADES

Also Published As

Publication number Publication date
FR3126017A1 (en) 2023-02-10

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