FR3121477B1 - AIRCRAFT TURBOMACHINE WITH VARIABLE-PITCHED PROPELLER BLADE - Google Patents

AIRCRAFT TURBOMACHINE WITH VARIABLE-PITCHED PROPELLER BLADE Download PDF

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Publication number
FR3121477B1
FR3121477B1 FR2103263A FR2103263A FR3121477B1 FR 3121477 B1 FR3121477 B1 FR 3121477B1 FR 2103263 A FR2103263 A FR 2103263A FR 2103263 A FR2103263 A FR 2103263A FR 3121477 B1 FR3121477 B1 FR 3121477B1
Authority
FR
France
Prior art keywords
blade
bowl
variable
foot
propeller blade
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
FR2103263A
Other languages
French (fr)
Other versions
FR3121477A1 (en
Inventor
Clément Cottet
Vivien Mickaël Courtier
Vincent Joudon
Régis Eugène Henri Servant
Laurent Jablonski
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 FR2103263A priority Critical patent/FR3121477B1/en
Priority to EP21755007.8A priority patent/EP4185522A1/en
Priority to US18/006,344 priority patent/US11993365B2/en
Priority to CN202180051861.0A priority patent/CN116097005A/en
Priority to PCT/FR2021/051316 priority patent/WO2022018359A1/en
Publication of FR3121477A1 publication Critical patent/FR3121477A1/en
Application granted granted Critical
Publication of FR3121477B1 publication Critical patent/FR3121477B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • 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
    • 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
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/64—Mounting; Assembling; Disassembling of axial pumps
    • F04D29/644—Mounting; Assembling; Disassembling of axial pumps especially adapted for elastic fluid pumps
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T50/00—Aeronautics or air transport
    • Y02T50/60—Efficient propulsion technologies, e.g. for aircraft

Landscapes

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

Abstract

L'invention concerne un ensemble comportant une aube (10) d'hélice et son système (34) de calage angulaire de l'aube (10) comportant un bol (42) qui est délimité radialement par une paroi (44) annulaire s'étendant autour d'un axe (A) de calage de l'aube (10), le bol (42) comportant une paroi (46) de fond, une extrémité (28) inférieure libre du pied (14) étant emboîtée axialement dans un logement (56) complémentaire de la paroi (46) de fond pour lier en rotation autour de l'axe (A) de calage le bol (42) et l'aube (10), caractérisé en ce que le pied (14) de l'aube (10) comporte une première face (70A) de limitation qui coopère avec une première face (72A) de butée du bol (42) pour limiter la rotation de l'aube (10) en cas de rupture de l'extrémité (28) inférieure du pied. Figure pour l'abrégé : Figure 9The invention relates to an assembly comprising a propeller blade (10) and its system (34) for angular setting of the blade (10) comprising a bowl (42) which is delimited radially by an annular wall (44) extending around an axis (A) for wedging the blade (10), the bowl (42) comprising a bottom wall (46), a free lower end (28) of the foot (14) being fitted axially in a housing (56) complementary to the bottom wall (46) to connect in rotation around the wedging axis (A) the bowl (42) and the blade (10), characterized in that the foot (14) of the blade (10) has a first limiting face (70A) which cooperates with a first abutment face (72A) of the bowl (42) to limit the rotation of the blade (10) in the event of the tip breaking (28) lower foot. Figure for abstract: Figure 9

FR2103263A 2020-07-24 2021-03-30 AIRCRAFT TURBOMACHINE WITH VARIABLE-PITCHED PROPELLER BLADE Active FR3121477B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
FR2103263A FR3121477B1 (en) 2021-03-30 2021-03-30 AIRCRAFT TURBOMACHINE WITH VARIABLE-PITCHED PROPELLER BLADE
EP21755007.8A EP4185522A1 (en) 2020-07-24 2021-07-15 Aircraft turbine engine comprising variable-pitch propeller blades
US18/006,344 US11993365B2 (en) 2020-07-24 2021-07-15 Aircraft turbine engine comprising variable-pitch propeller blades
CN202180051861.0A CN116097005A (en) 2020-07-24 2021-07-15 Aircraft turbine engine including variable pitch propeller blades
PCT/FR2021/051316 WO2022018359A1 (en) 2020-07-24 2021-07-15 Aircraft turbine engine comprising variable-pitch propeller blades

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR2103263A FR3121477B1 (en) 2021-03-30 2021-03-30 AIRCRAFT TURBOMACHINE WITH VARIABLE-PITCHED PROPELLER BLADE
FR2103263 2021-03-30

Publications (2)

Publication Number Publication Date
FR3121477A1 FR3121477A1 (en) 2022-10-07
FR3121477B1 true FR3121477B1 (en) 2023-02-24

Family

ID=75746914

Family Applications (1)

Application Number Title Priority Date Filing Date
FR2103263A Active FR3121477B1 (en) 2020-07-24 2021-03-30 AIRCRAFT TURBOMACHINE WITH VARIABLE-PITCHED PROPELLER BLADE

Country Status (1)

Country Link
FR (1) FR3121477B1 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB718127A (en) * 1951-02-01 1954-11-10 Paolo Terzi Improvements in or relating to variable pitch propellers
DE4203205C2 (en) * 1992-02-05 1995-12-07 Muehlbauer Luftfahrttechn Gmbh Propeller blade storage
FR3017163B1 (en) * 2014-02-04 2016-02-12 Snecma DEVICE FOR A NON-CAREED PROPELLER HAVING A VARIABLE SHIFT OF A TURBOMACHINE

Also Published As

Publication number Publication date
FR3121477A1 (en) 2022-10-07

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