FR2944774B1 - Helice non carenee a pales a calage variable pour une turbomachine - Google Patents

Helice non carenee a pales a calage variable pour une turbomachine

Info

Publication number
FR2944774B1
FR2944774B1 FR0901946A FR0901946A FR2944774B1 FR 2944774 B1 FR2944774 B1 FR 2944774B1 FR 0901946 A FR0901946 A FR 0901946A FR 0901946 A FR0901946 A FR 0901946A FR 2944774 B1 FR2944774 B1 FR 2944774B1
Authority
FR
France
Prior art keywords
propeller
turbomachine
careed
rotor element
plate
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
FR0901946A
Other languages
English (en)
Other versions
FR2944774A1 (fr
Inventor
Laurent Jablonski
Philippe Joly
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
SNECMA 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 SNECMA SAS filed Critical SNECMA SAS
Priority to FR0901946A priority Critical patent/FR2944774B1/fr
Publication of FR2944774A1 publication Critical patent/FR2944774A1/fr
Application granted granted Critical
Publication of FR2944774B1 publication Critical patent/FR2944774B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • F02K3/072—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 counter-rotating, e.g. fan rotors
    • 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
    • B64C11/46—Arrangements of, or constructional features peculiar to, multiple propellers
    • B64C11/48—Units of two or more coaxial propellers
    • B64D27/026—
    • 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

Abstract

Hélice non carénée à pales à calage variable pour une turbomachine, les pales de l'hélice étant montées à rotation autour de leurs axes dans des logements radiaux (138) d'un élément de rotor (136) et chaque pale étant fixée sur une platine (144) sur laquelle est vissée une couronne (150), cette platine comprenant une extrémité radialement interne élargie (168) appliquée vers l'extérieur sur une face interne (162) de l'élément de rotor par l'intermédiaire d'un palier (152), et la couronne étant vissée sur la platine à l'extérieur du logement et étant appliquée sur une face externe (164) de l'élément de rotor par l'intermédiaire d'un palier (154).
FR0901946A 2009-04-22 2009-04-22 Helice non carenee a pales a calage variable pour une turbomachine Active FR2944774B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR0901946A FR2944774B1 (fr) 2009-04-22 2009-04-22 Helice non carenee a pales a calage variable pour une turbomachine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0901946A FR2944774B1 (fr) 2009-04-22 2009-04-22 Helice non carenee a pales a calage variable pour une turbomachine

Publications (2)

Publication Number Publication Date
FR2944774A1 FR2944774A1 (fr) 2010-10-29
FR2944774B1 true FR2944774B1 (fr) 2011-05-06

Family

ID=41503893

Family Applications (1)

Application Number Title Priority Date Filing Date
FR0901946A Active FR2944774B1 (fr) 2009-04-22 2009-04-22 Helice non carenee a pales a calage variable pour une turbomachine

Country Status (1)

Country Link
FR (1) FR2944774B1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2972768B1 (fr) * 2011-03-14 2015-07-17 Snecma Turbomachine a helice(s) pour aeronef, a tuyere mobile
FR3047972B1 (fr) * 2016-02-24 2018-03-02 Safran Aircraft Engines Pale a calage variable equipee a sa base d'elements mobiles retractables
FR3129432B1 (fr) * 2021-11-19 2023-11-24 Safran Aircraft Engines Module de montage d’une aube de soufflante de turbomachine

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2107785A (en) * 1934-08-23 1938-02-08 Gustav Schwarz G M B H Variable pitch propeller for aircraft
US4738590A (en) * 1986-09-09 1988-04-19 General Electric Company Blade pitch varying mechanism
US5263898A (en) * 1988-12-14 1993-11-23 General Electric Company Propeller blade retention system
DE9307420U1 (fr) * 1993-05-06 1993-08-05 Muehlbauer Luftfahrttechnik Gmbh, 94369 Rain, De

Also Published As

Publication number Publication date
FR2944774A1 (fr) 2010-10-29

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