FR2935348B1 - Turbomachine a helices non carenees - Google Patents

Turbomachine a helices non carenees

Info

Publication number
FR2935348B1
FR2935348B1 FR0804748A FR0804748A FR2935348B1 FR 2935348 B1 FR2935348 B1 FR 2935348B1 FR 0804748 A FR0804748 A FR 0804748A FR 0804748 A FR0804748 A FR 0804748A FR 2935348 B1 FR2935348 B1 FR 2935348B1
Authority
FR
France
Prior art keywords
carineated
turbomachine
propellers
carineated propellers
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
FR0804748A
Other languages
English (en)
Other versions
FR2935348A1 (fr
Inventor
Benoit Guillaume Farvacque
Philippe Jacques Pierre Fessou
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 FR0804748A priority Critical patent/FR2935348B1/fr
Publication of FR2935348A1 publication Critical patent/FR2935348A1/fr
Application granted granted Critical
Publication of FR2935348B1 publication Critical patent/FR2935348B1/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
    • B64C11/16—Blades
    • B64C11/18—Aerodynamic features
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D19/00—Axial-flow pumps
    • F04D19/02—Multi-stage pumps
    • F04D19/024—Multi-stage pumps with contrarotating parts
    • 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
    • F04D29/16—Sealings between pressure and suction sides
    • F04D29/161—Sealings between pressure and suction sides especially adapted for elastic fluid pumps
    • F04D29/164—Sealings between pressure and suction sides especially adapted for elastic fluid pumps of an axial flow wheel
    • 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
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/68—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers
    • F04D29/681—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps
    • 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
    • F05D2240/00—Components
    • F05D2240/20—Rotors
    • F05D2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
    • F05D2240/307—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor related to the tip of a rotor blade
    • 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
    • F05D2250/10—Two-dimensional
    • F05D2250/18—Two-dimensional patterned
    • F05D2250/182—Two-dimensional patterned crenellated, notched
    • 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
    • F05D2250/10—Two-dimensional
    • F05D2250/18—Two-dimensional patterned
    • F05D2250/183—Two-dimensional patterned zigzag
    • 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)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
FR0804748A 2008-08-28 2008-08-28 Turbomachine a helices non carenees Active FR2935348B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR0804748A FR2935348B1 (fr) 2008-08-28 2008-08-28 Turbomachine a helices non carenees

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0804748A FR2935348B1 (fr) 2008-08-28 2008-08-28 Turbomachine a helices non carenees

Publications (2)

Publication Number Publication Date
FR2935348A1 FR2935348A1 (fr) 2010-03-05
FR2935348B1 true FR2935348B1 (fr) 2011-04-08

Family

ID=40433908

Family Applications (1)

Application Number Title Priority Date Filing Date
FR0804748A Active FR2935348B1 (fr) 2008-08-28 2008-08-28 Turbomachine a helices non carenees

Country Status (1)

Country Link
FR (1) FR2935348B1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2538024B1 (fr) * 2011-06-24 2015-09-23 Alstom Technology Ltd Aube dans une turbomachine
US9102397B2 (en) * 2011-12-20 2015-08-11 General Electric Company Airfoils including tip profile for noise reduction and method for fabricating same
US10414486B2 (en) 2015-11-30 2019-09-17 General Electric Company Airfoil for a rotary machine including a propellor assembly
US11225874B2 (en) * 2019-12-20 2022-01-18 Raytheon Technologies Corporation Turbine engine rotor blade with castellated tip surface

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4883240A (en) * 1985-08-09 1989-11-28 General Electric Company Aircraft propeller noise reduction
GB2220712B (en) * 1988-07-13 1992-12-09 Rolls Royce Plc Open rotor blading
US5190441A (en) * 1990-08-13 1993-03-02 General Electric Company Noise reduction in aircraft propellers
JPH04314693A (ja) * 1991-04-11 1992-11-05 Mitsubishi Heavy Ind Ltd 回転翼
DE19706668A1 (de) * 1997-02-20 1998-09-10 Winfried Dipl Ing Bessler Multiwinglets für Fluggeräte und Modelle für: Flugzeuge, Ultraleichtflugzeuge, Hubschrauberpropeller, Flugdrachen + Gleitschirme, Luftkissenfahrzeuge und Modelle aller dieser Fluggeräte
FR2783885B1 (fr) * 1998-09-25 2001-07-27 Geco As Structure portante a tourbillon marginal reduit
US6578798B1 (en) * 2002-04-08 2003-06-17 Faruk Dizdarevic Airlifting surface division
US20050061921A1 (en) * 2003-09-19 2005-03-24 Egolf Thomas A. Aerodynamic tip protuberances for tip vortex intensity reduction

Also Published As

Publication number Publication date
FR2935348A1 (fr) 2010-03-05

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