FR3047972B1 - VARIABLE SHAFT BLADE EQUIPPED WITH ITS BASE OF RETRACTABLE MOBILE ELEMENTS - Google Patents

VARIABLE SHAFT BLADE EQUIPPED WITH ITS BASE OF RETRACTABLE MOBILE ELEMENTS Download PDF

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Publication number
FR3047972B1
FR3047972B1 FR1651521A FR1651521A FR3047972B1 FR 3047972 B1 FR3047972 B1 FR 3047972B1 FR 1651521 A FR1651521 A FR 1651521A FR 1651521 A FR1651521 A FR 1651521A FR 3047972 B1 FR3047972 B1 FR 3047972B1
Authority
FR
France
Prior art keywords
base
mobile elements
variable shaft
shaft blade
blade equipped
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
FR1651521A
Other languages
French (fr)
Other versions
FR3047972A1 (en
Inventor
Pierre Jean Lahaye Guillaume
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
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 Safran Aircraft Engines SAS, SNECMA SAS filed Critical Safran Aircraft Engines SAS
Priority to FR1651521A priority Critical patent/FR3047972B1/en
Priority to PCT/FR2017/050372 priority patent/WO2017144804A1/en
Publication of FR3047972A1 publication Critical patent/FR3047972A1/en
Application granted granted Critical
Publication of FR3047972B1 publication Critical patent/FR3047972B1/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
    • B64C11/16—Blades
    • B64C11/20—Constructional features
    • 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
    • F04D29/08—Sealings
    • F04D29/083—Sealings especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/08—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with exclusively metal packing
    • F16J15/0806—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with exclusively metal packing characterised by material or surface treatment
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/3284—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings characterised by their structure; Selection of materials
    • F16J15/3292—Lamellar structures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
    • F16J15/3436—Pressing means
    • F16J15/3444—Pressing means by magnetic attraction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
    • F01D11/005—Sealing means between non relatively rotating elements
    • F01D11/006—Sealing the gap between rotor blades or blades and rotor
    • 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
    • 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
FR1651521A 2016-02-24 2016-02-24 VARIABLE SHAFT BLADE EQUIPPED WITH ITS BASE OF RETRACTABLE MOBILE ELEMENTS Active FR3047972B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR1651521A FR3047972B1 (en) 2016-02-24 2016-02-24 VARIABLE SHAFT BLADE EQUIPPED WITH ITS BASE OF RETRACTABLE MOBILE ELEMENTS
PCT/FR2017/050372 WO2017144804A1 (en) 2016-02-24 2017-02-20 Variable-pitch blade provided with retractable mobile elements at the base thereof

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1651521 2016-02-24
FR1651521A FR3047972B1 (en) 2016-02-24 2016-02-24 VARIABLE SHAFT BLADE EQUIPPED WITH ITS BASE OF RETRACTABLE MOBILE ELEMENTS

Publications (2)

Publication Number Publication Date
FR3047972A1 FR3047972A1 (en) 2017-08-25
FR3047972B1 true FR3047972B1 (en) 2018-03-02

Family

ID=55752589

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1651521A Active FR3047972B1 (en) 2016-02-24 2016-02-24 VARIABLE SHAFT BLADE EQUIPPED WITH ITS BASE OF RETRACTABLE MOBILE ELEMENTS

Country Status (2)

Country Link
FR (1) FR3047972B1 (en)
WO (1) WO2017144804A1 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4419053A (en) * 1981-11-20 1983-12-06 Fairchild Swearingen Corporation Propeller spinner
FR2944774B1 (en) * 2009-04-22 2011-05-06 Snecma NON-CAREED PROPELLER HAVING A VARIABLE SHAFT FOR A TURBOMACHINE
FR2971542B1 (en) * 2011-02-16 2015-12-25 Snecma AUTON CIRCONFERENTIAL BLOCKING DEVICE FOR TURBOMACHINE, WITH RADIAL DEPLOYMENT BY ROTATION MOTION OF AN ORGAN OF THE DEVICE
FR2976551B1 (en) * 2011-06-20 2013-06-28 Snecma BLADE, ESPECIALLY A VARIABLE SHAFT, PROPELLER COMPRISING SUCH BLADES, AND CORRESPONDING TURBOMACHINE
FR2993533B1 (en) * 2012-07-18 2015-09-04 Eurocopter France AIRCRAFT ROTOR EQUIPPED WITH AN ELECTRIC POWER CONNECTION DEVICE BETWEEN A HUB AND ROTOR BLADES

Also Published As

Publication number Publication date
WO2017144804A1 (en) 2017-08-31
FR3047972A1 (en) 2017-08-25

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