FR2228168A1 - Flow deflection for aerodynamic surface - using process retarding or preventing flow separation - Google Patents

Flow deflection for aerodynamic surface - using process retarding or preventing flow separation

Info

Publication number
FR2228168A1
FR2228168A1 FR7315908A FR7315908A FR2228168A1 FR 2228168 A1 FR2228168 A1 FR 2228168A1 FR 7315908 A FR7315908 A FR 7315908A FR 7315908 A FR7315908 A FR 7315908A FR 2228168 A1 FR2228168 A1 FR 2228168A1
Authority
FR
France
Prior art keywords
flow
cavity
aerodynamic surface
deflection
fluid
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.)
Granted
Application number
FR7315908A
Other languages
French (fr)
Other versions
FR2228168B1 (en
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.)
Bertin Technologies SAS
Original Assignee
Bertin et Cie SA
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 Bertin et Cie SA filed Critical Bertin et Cie SA
Priority to FR7315908A priority Critical patent/FR2228168A1/en
Publication of FR2228168A1 publication Critical patent/FR2228168A1/en
Application granted granted Critical
Publication of FR2228168B1 publication Critical patent/FR2228168B1/fr
Granted 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
    • B64C21/02—Influencing air flow over aircraft surfaces by affecting boundary layer flow by use of slot, ducts, porous areas or the like
    • B64C21/025—Influencing air flow over aircraft surfaces by affecting boundary layer flow by use of slot, ducts, porous areas or the like for simultaneous blowing and sucking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C2230/00—Boundary layer controls
    • B64C2230/04—Boundary layer controls by actively generating fluid flow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C2230/00—Boundary layer controls
    • B64C2230/16—Boundary layer controls by blowing other fluids over the surface than air, e.g. He, H, O2 or exhaust gases
    • 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)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

This process, particularly used with highly convex surfaces e.g. aircraft wing flaps, has a cavity on the wall placed, transversely to the flow, at the very beginning of the increased convexity area, its opening facing the flow. Fluid is sucked in or injected to cavity along its longitudinal axis or its medium line to create or reinforce an eddy which will tend to force the flow to adhere to the wall. As a preferred addition inside the cavity, open in the working position towards the flow, a trumpet-shape tube blows out or sucks in the stabilizing fluid.
FR7315908A 1973-05-03 1973-05-03 Flow deflection for aerodynamic surface - using process retarding or preventing flow separation Granted FR2228168A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7315908A FR2228168A1 (en) 1973-05-03 1973-05-03 Flow deflection for aerodynamic surface - using process retarding or preventing flow separation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7315908A FR2228168A1 (en) 1973-05-03 1973-05-03 Flow deflection for aerodynamic surface - using process retarding or preventing flow separation

Publications (2)

Publication Number Publication Date
FR2228168A1 true FR2228168A1 (en) 1974-11-29
FR2228168B1 FR2228168B1 (en) 1975-08-22

Family

ID=9118749

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7315908A Granted FR2228168A1 (en) 1973-05-03 1973-05-03 Flow deflection for aerodynamic surface - using process retarding or preventing flow separation

Country Status (1)

Country Link
FR (1) FR2228168A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2405624A (en) * 2003-09-05 2005-03-09 Fanwing Ltd Wing with lift augmentation
EP2926001A4 (en) * 2012-11-30 2016-08-24 Rensselaer Polytech Inst Methods and systems of modifying air flow at building structures

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2841182A (en) * 1955-12-29 1958-07-01 Westinghouse Electric Corp Boundary layer fluid control apparatus
US2894703A (en) * 1954-05-27 1959-07-14 Research Corp Boundary layer control system
US3508561A (en) * 1967-03-20 1970-04-28 Lockheed Aircraft Corp Method of and means for controlling fluid flows
US3578016A (en) * 1968-12-26 1971-05-11 Gen Electric Antisiphon fluid inlet means

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2894703A (en) * 1954-05-27 1959-07-14 Research Corp Boundary layer control system
US2841182A (en) * 1955-12-29 1958-07-01 Westinghouse Electric Corp Boundary layer fluid control apparatus
US3508561A (en) * 1967-03-20 1970-04-28 Lockheed Aircraft Corp Method of and means for controlling fluid flows
US3578016A (en) * 1968-12-26 1971-05-11 Gen Electric Antisiphon fluid inlet means

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2405624A (en) * 2003-09-05 2005-03-09 Fanwing Ltd Wing with lift augmentation
EP2926001A4 (en) * 2012-11-30 2016-08-24 Rensselaer Polytech Inst Methods and systems of modifying air flow at building structures

Also Published As

Publication number Publication date
FR2228168B1 (en) 1975-08-22

Similar Documents

Publication Publication Date Title
ES437206A1 (en) Catheter
IE36039L (en) Sealing cartons
FR2228168A1 (en) Flow deflection for aerodynamic surface - using process retarding or preventing flow separation
ES413460A1 (en) Containers for molten metal
ES372478A1 (en) Parachute
GB1361892A (en) Device for automatically sealing an opening in an aircraft fuselage
GB1296632A (en)
FR2256648A6 (en) Caravan drawgear for automobile - prevents vert angular displacement of trailer shaft upon braking
JPS5515852A (en) Tube inside wall lining method
FR2080375A5 (en) Blowing/filling mandrel
PAPCHENKO Approximate method of calculating the downwash behind a straight wing for unsteady aperiodic motion at subsonic flight speeds(Downwash angle behind straight wing for unsteady aperiodic flight at subsonic speeds, using vorticity model)
FR1239330A (en) Technological improvements to the deflection processes of fluid sheets ejected by the trailing edge of propeller blades or wings
Zimont et al. Calculation of a pseudo-shock in a cylindrical channel(transitional supersonic-subsonic flow)
USD145522S (en) Motor driven actuator for movable parts of an airplane or the like
USD144013S (en) Mock machine gun and wing attachment for bicycles
USD143047S (en) Design for a skimming spoon
GB670409A (en) Improvements in and relating to a closure device for an air suction pipe
JPS5542823A (en) Method for lining inner surface of tube
DAT et al. Determination of the characteristics of the vortex streets associated with a jet with a uniform initial velocity profile(Vortex streets characteristics determination for plane jet having uniform initial velocity profile)
USD142611S (en) Design for a book holder
NISHIOKA et al. An approximate method for calculating the interaction between shock wave and turbulent boundary layer
Legendre Remarks on axisymmetric vortex breakdown
BAUDU et al. Modeling dynamic stall on an oscillating airfoil
ES271043U (en) Sound emitting toy.
USD140877S (en) Le sage compact

Legal Events

Date Code Title Description
CL Concession to grant licences
ST Notification of lapse