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FR3016390B1 - DAWN SUPPRESSING ACOUSTIC REFLECTIONS, AND TURBOMACHINE - Google Patents

DAWN SUPPRESSING ACOUSTIC REFLECTIONS, AND TURBOMACHINE Download PDF

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Publication number
FR3016390B1
FR3016390B1 FR1450273A FR1450273A FR3016390B1 FR 3016390 B1 FR3016390 B1 FR 3016390B1 FR 1450273 A FR1450273 A FR 1450273A FR 1450273 A FR1450273 A FR 1450273A FR 3016390 B1 FR3016390 B1 FR 3016390B1
Authority
FR
France
Prior art keywords
turbomachine
dawn
acoustic reflections
suppressing acoustic
cells
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
FR1450273A
Other languages
French (fr)
Other versions
FR3016390A1 (en
Inventor
Jonathan VLASTUIN
Adrien Laurenceau
Sebastien TAJAN
Adrien Fabre
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 FR1450273A priority Critical patent/FR3016390B1/en
Publication of FR3016390A1 publication Critical patent/FR3016390A1/en
Application granted granted Critical
Publication of FR3016390B1 publication Critical patent/FR3016390B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/12—Blades
    • F01D5/14—Form or construction
    • F01D5/147—Construction, i.e. structural features, e.g. of weight-saving hollow 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
    • F02K3/072—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
    • 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
    • F05D2220/32—Application in turbines in gas turbines
    • F05D2220/325—Application in turbines in gas turbines to drive unshrouded, high solidity propeller
    • 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
    • F05D2250/00—Geometry
    • F05D2250/20—Three-dimensional
    • F05D2250/28—Three-dimensional patterned
    • F05D2250/283—Three-dimensional patterned honeycomb
    • 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
    • F05D2260/96—Preventing, counteracting or reducing vibration or noise
    • F05D2260/963—Preventing, counteracting or reducing vibration or noise by Helmholtz resonators
    • 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)
  • Architecture (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

L'invention concerne une aube (1) de rotor de turbomachine, comprenant une enveloppe (2) externe entourant un volume (3) interne, caractérisée en ce qu'elle comprend : - une structure (4) alvéolée disposée dans le volume (3) interne, ladite structure (4) comprenant un réseau d'une pluralité d'alvéoles (5); - une pluralité d'ouvertures (8) pratiquées dans l'enveloppe (2), qui débouchent sur les alvéoles (5). L'invention concerne également une turbomachine comprenant au moins deux hélices non carénées, l'une des hélices comprenant des aubes telles que décrites.The invention relates to a blade (1) for a turbomachine rotor, comprising an outer casing (2) surrounding an internal volume (3), characterized in that it comprises: - a cellular structure (4) arranged in the volume (3) ), said structure (4) comprising an array of a plurality of cells (5); - A plurality of openings (8) formed in the casing (2), which open on the cells (5). The invention also relates to a turbomachine comprising at least two unducted propellers, one of the propellers comprising blades as described.

FR1450273A 2014-01-14 2014-01-14 DAWN SUPPRESSING ACOUSTIC REFLECTIONS, AND TURBOMACHINE Active FR3016390B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR1450273A FR3016390B1 (en) 2014-01-14 2014-01-14 DAWN SUPPRESSING ACOUSTIC REFLECTIONS, AND TURBOMACHINE

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1450273 2014-01-14
FR1450273A FR3016390B1 (en) 2014-01-14 2014-01-14 DAWN SUPPRESSING ACOUSTIC REFLECTIONS, AND TURBOMACHINE

Publications (2)

Publication Number Publication Date
FR3016390A1 FR3016390A1 (en) 2015-07-17
FR3016390B1 true FR3016390B1 (en) 2019-04-19

Family

ID=50483124

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1450273A Active FR3016390B1 (en) 2014-01-14 2014-01-14 DAWN SUPPRESSING ACOUSTIC REFLECTIONS, AND TURBOMACHINE

Country Status (1)

Country Link
FR (1) FR3016390B1 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2026622A (en) * 1978-07-08 1980-02-06 Rolls Royce Blade for Fluid Flow Machine
US7018172B2 (en) * 2003-12-22 2006-03-28 United Technologies Corporation Airfoil surface impedance modification for noise reduction in turbofan engines
US7959412B2 (en) * 2006-09-29 2011-06-14 General Electric Company Wind turbine rotor blade with acoustic lining
US8425191B2 (en) * 2008-05-30 2013-04-23 United Technologies Corporation Propfan assembly

Also Published As

Publication number Publication date
FR3016390A1 (en) 2015-07-17

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