FR2972710B1 - Dispositif d'attenuation acoustique du bruit d'helice d'un turbopropulseur d'aeronef a double helice contrarotative - Google Patents

Dispositif d'attenuation acoustique du bruit d'helice d'un turbopropulseur d'aeronef a double helice contrarotative

Info

Publication number
FR2972710B1
FR2972710B1 FR1152078A FR1152078A FR2972710B1 FR 2972710 B1 FR2972710 B1 FR 2972710B1 FR 1152078 A FR1152078 A FR 1152078A FR 1152078 A FR1152078 A FR 1152078A FR 2972710 B1 FR2972710 B1 FR 2972710B1
Authority
FR
France
Prior art keywords
turbopropulsor
contrarotative
propellant
noise
propeller aircraft
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
FR1152078A
Other languages
English (en)
Other versions
FR2972710A1 (fr
Inventor
Alexandre Alfred Gaston Vuillemin
Cedric Morel
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 FR1152078A priority Critical patent/FR2972710B1/fr
Publication of FR2972710A1 publication Critical patent/FR2972710A1/fr
Application granted granted Critical
Publication of FR2972710B1 publication Critical patent/FR2972710B1/fr
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
    • B64C11/30—Blade pitch-changing mechanisms
    • B64C11/306—Blade pitch-changing mechanisms specially adapted for contrarotating propellers
    • B64C11/308—Blade pitch-changing mechanisms specially adapted for contrarotating propellers automatic
    • 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
    • F01D17/00—Regulating or controlling by varying flow
    • F01D17/02—Arrangement of sensing elements
    • 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
    • F01D7/00—Rotors with blades adjustable in operation; Control thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C2220/00—Active noise reduction systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D27/00—Arrangement or mounting of power plants in aircraft; Aircraft characterised by the type or position of power plants
    • B64D2027/005—Aircraft with an unducted turbofan comprising contra-rotating rotors, e.g. contra-rotating open rotors [CROR]
    • 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
    • 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)
FR1152078A 2011-03-15 2011-03-15 Dispositif d'attenuation acoustique du bruit d'helice d'un turbopropulseur d'aeronef a double helice contrarotative Active FR2972710B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR1152078A FR2972710B1 (fr) 2011-03-15 2011-03-15 Dispositif d'attenuation acoustique du bruit d'helice d'un turbopropulseur d'aeronef a double helice contrarotative

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1152078A FR2972710B1 (fr) 2011-03-15 2011-03-15 Dispositif d'attenuation acoustique du bruit d'helice d'un turbopropulseur d'aeronef a double helice contrarotative

Publications (2)

Publication Number Publication Date
FR2972710A1 FR2972710A1 (fr) 2012-09-21
FR2972710B1 true FR2972710B1 (fr) 2014-09-26

Family

ID=44548262

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1152078A Active FR2972710B1 (fr) 2011-03-15 2011-03-15 Dispositif d'attenuation acoustique du bruit d'helice d'un turbopropulseur d'aeronef a double helice contrarotative

Country Status (1)

Country Link
FR (1) FR2972710B1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105197246A (zh) * 2015-09-15 2015-12-30 上海交通大学 压电纤维复合材料驱动的发动机扇形降噪喷嘴

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2999711B1 (fr) * 2012-12-13 2015-07-03 Snecma Methode et dispositif de detection acoustique d'un dysfonctionnement d'un moteur equipe d'un controle actif du bruit.
FR3130747A1 (fr) * 2021-12-22 2023-06-23 Safran Aircraft Engines Turbomachine d’aeronef comprenant un pilotage de calage de pales par mesures locales de pression

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5082421A (en) * 1986-04-28 1992-01-21 Rolls-Royce Plc Active control of unsteady motion phenomena in turbomachinery

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105197246A (zh) * 2015-09-15 2015-12-30 上海交通大学 压电纤维复合材料驱动的发动机扇形降噪喷嘴

Also Published As

Publication number Publication date
FR2972710A1 (fr) 2012-09-21

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