FR2866931A3 - HELICE MONICA - Google Patents

HELICE MONICA

Info

Publication number
FR2866931A3
FR2866931A3 FR0402084A FR0402084A FR2866931A3 FR 2866931 A3 FR2866931 A3 FR 2866931A3 FR 0402084 A FR0402084 A FR 0402084A FR 0402084 A FR0402084 A FR 0402084A FR 2866931 A3 FR2866931 A3 FR 2866931A3
Authority
FR
France
Prior art keywords
blade
vortices
boundary layer
airfoil
ducts
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.)
Withdrawn
Application number
FR0402084A
Other languages
French (fr)
Other versions
FR2866931A1 (en
Inventor
Claude Guth
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR0402084A priority Critical patent/FR2866931A1/en
Publication of FR2866931A3 publication Critical patent/FR2866931A3/en
Publication of FR2866931A1 publication Critical patent/FR2866931A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15D—FLUID DYNAMICS, i.e. METHODS OR MEANS FOR INFLUENCING THE FLOW OF GASES OR LIQUIDS
    • F15D1/00—Influencing flow of fluids
    • F15D1/10—Influencing flow of fluids around bodies of solid material
    • F15D1/12—Influencing flow of fluids around bodies of solid material by influencing the boundary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C21/00—Influencing air flow over aircraft surfaces by affecting boundary layer flow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C27/00—Rotorcraft; Rotors peculiar thereto
    • B64C27/32—Rotors
    • B64C27/46—Blades
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C2230/00—Boundary layer controls
    • B64C2230/22—Boundary layer controls by using a surface having multiple apertures of relatively small openings other than slots
    • 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
    • Y02T50/10—Drag reduction

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Nozzles For Electric Vacuum Cleaners (AREA)

Abstract

Dispositif d'aspiration de la couche limite et de suppression des tourbillons de bout de pale appliqué aux hélices ou à toute voilure tournante.L'invention concerne un dispositif permettant de mettre en oeuvre simplement une aspiration de la couche limite sur les pales d'une voilure tournante. Ce dispositif a également pour conséquence la réduction des tourbillons de bout de pale.Il est constitué peau poreuse (1), de conduits (2) et d'une ouverture d'extrémité dirigée dans l'axe de la poussée (figure 2). Lorsque l'hélice est en rotation, une dépression se crée dans les conduits, ce qui aspire la couche limite. Le flux d'air ainsi créé est rejeté en bout de pale pour participer à la poussée et « souffler » les tourbillons de bout de pale.Le dispositif selon l'invention est particulièrement destiné aux avions à hélice et hélicoptères.Device for suction of the boundary layer and removal of vortices at the tip of the blade applied to the propellers or to any rotary airfoil. The invention relates to a device making it possible to simply implement a suction of the boundary layer on the blades of an airfoil. rotary airfoil. This device also results in the reduction of vortices at the tip of the blade. It consists of a porous skin (1), ducts (2) and an end opening directed in the axis of the thrust (figure 2). When the propeller is rotating, a depression is created in the ducts, which sucks the boundary layer. The air flow thus created is rejected at the end of the blade to participate in the thrust and “blow” the vortices at the end of the blade. The device according to the invention is particularly intended for propeller airplanes and helicopters.

FR0402084A 2004-03-01 2004-03-01 Boundary layer aspiration device for e.g. propeller, has conduits in which depression is created, when propeller is in rotation, for aspirating boundary layer across porous layer and diverting air towards end of blade tip Withdrawn FR2866931A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR0402084A FR2866931A1 (en) 2004-03-01 2004-03-01 Boundary layer aspiration device for e.g. propeller, has conduits in which depression is created, when propeller is in rotation, for aspirating boundary layer across porous layer and diverting air towards end of blade tip

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0402084A FR2866931A1 (en) 2004-03-01 2004-03-01 Boundary layer aspiration device for e.g. propeller, has conduits in which depression is created, when propeller is in rotation, for aspirating boundary layer across porous layer and diverting air towards end of blade tip

Publications (2)

Publication Number Publication Date
FR2866931A3 true FR2866931A3 (en) 2005-09-02
FR2866931A1 FR2866931A1 (en) 2005-09-02

Family

ID=34834155

Family Applications (1)

Application Number Title Priority Date Filing Date
FR0402084A Withdrawn FR2866931A1 (en) 2004-03-01 2004-03-01 Boundary layer aspiration device for e.g. propeller, has conduits in which depression is created, when propeller is in rotation, for aspirating boundary layer across porous layer and diverting air towards end of blade tip

Country Status (1)

Country Link
FR (1) FR2866931A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110667820A (en) * 2019-09-10 2020-01-10 河南理工大学 Aircraft wing

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2935349B1 (en) * 2008-08-29 2010-10-01 Snecma TURBOMACHINE WITH NON-CARINEATED PROPELLERS
DE102011011489A1 (en) * 2011-02-17 2012-08-23 Eads Deutschland Gmbh Propeller blade and thus provided engine for an aircraft
FR3084693B1 (en) * 2018-08-03 2020-12-25 Safran Aircraft Engines TURBOMACHINE WITH NON-FAIRING PROPELLERS
FR3111619B1 (en) 2020-06-17 2022-12-23 Airbus Helicopters Rotorcraft blade provided with cavities, rotorcraft equipped with such a blade and method for attenuating noise

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110667820A (en) * 2019-09-10 2020-01-10 河南理工大学 Aircraft wing

Also Published As

Publication number Publication date
FR2866931A1 (en) 2005-09-02

Similar Documents

Publication Publication Date Title
WO2005072110A3 (en) Blender blade
FR2866931A3 (en) HELICE MONICA
EP1559869A3 (en) Rotor blade for a turbomachine
KR100971937B1 (en) Quiet propeller
EP2037126A1 (en) Tubofan engine
DE60106496D1 (en) ABLATIONSATHEREKTOMIEFRÄSWERKZEUG
EP1645721A3 (en) Gas turbine airfoil with leading edge cooling
JPH08501247A (en) Disk type mixing equipment
US6899525B2 (en) Blade and wing configuration
JP2007125914A (en) Fluid focusing propeller
EP2093028A1 (en) Hair clipper
FR3059735B1 (en) TURBOMACHINE PART WITH NON-AXISYMETRIC SURFACE
EP1559870A3 (en) Rotor blade for a turbo machine
RU2267657C2 (en) Method of enhancing operational efficiency of blade (versions)
FR2982747B1 (en) HAIRDRYER WITH CONCENTRIC FINES
EP3508418A3 (en) Composite rotor blades with integral attachment mechanism
WO2004043780A3 (en) Laminar flow wing for transonic cruise
JPH0786358B2 (en) fan
TW200905084A (en) Fan impeller structure
WO2002025109A1 (en) Reactive hollow blades for wind machine
ATE391235T1 (en) DEVICE FOR IMPROVING THE PERFORMANCE OF WIND TURBINE BLADES
US20220185457A1 (en) Fluid adjustment device and aircraft
JPH0717996U (en) Axial fan
EP0865879A3 (en) Abrasive grinding disc and method of manufacturing the same
JP2003172297A (en) Multiblade fan

Legal Events

Date Code Title Description
ST Notification of lapse

Effective date: 20051130