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GB2256253B - Boundary layer control - Google Patents
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GB2256253B - Boundary layer control - Google Patents

Boundary layer control

Info

Publication number
GB2256253B
GB2256253B GB9211225A GB9211225A GB2256253B GB 2256253 B GB2256253 B GB 2256253B GB 9211225 A GB9211225 A GB 9211225A GB 9211225 A GB9211225 A GB 9211225A GB 2256253 B GB2256253 B GB 2256253B
Authority
GB
United Kingdom
Prior art keywords
boundary layer
face
air
component
face region
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.)
Expired - Fee Related
Application number
GB9211225A
Other versions
GB9211225D0 (en
GB2256253A (en
Inventor
Mark Anthony Braniff
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.)
Short Brothers PLC
Original Assignee
Short Brothers PLC
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 Short Brothers PLC filed Critical Short Brothers PLC
Publication of GB9211225D0 publication Critical patent/GB9211225D0/en
Publication of GB2256253A publication Critical patent/GB2256253A/en
Application granted granted Critical
Publication of GB2256253B publication Critical patent/GB2256253B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • B64C2230/22—Boundary layer controls by using a surface having multiple apertures of relatively small openings other than slots
    • 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
    • B64D33/00—Arrangement in aircraft of power plant parts or auxiliaries not otherwise provided for
    • B64D33/02—Arrangement in aircraft of power plant parts or auxiliaries not otherwise provided for of combustion air intakes
    • B64D2033/0226—Arrangement in aircraft of power plant parts or auxiliaries not otherwise provided for of combustion air intakes comprising boundary layer control means
    • 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)
  • Aviation & Aerospace Engineering (AREA)
  • Liquid Crystal (AREA)
  • Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (AREA)
  • Farming Of Fish And Shellfish (AREA)

Abstract

Laminar flow of air in a boundary layer adjacent a face of an aircraft component exposed to air flow over it has been controlled by injecting air into the boundary layer or by withdrawing air from it through a multitude of small holes drilled through the component. To avoid the disadvantages of drilling holes a low drag component (12) is provided which includes a cellular face region (13) which includes a front face (15) exposed to air flow and which has an open celled structure which permits gaseous fluid flow through the face (15) of the component (12). Manifolds (41) are provided at the rear of the face region (13) to permit or cause gaseous fluid flow from or to the boundary layer through the open celled structure of the face region. In one form, the face region is made from a porous permeable thermoplastics material by powder sintering the thermoplastics material.
GB9211225A 1991-05-30 1992-05-27 Boundary layer control Expired - Fee Related GB2256253B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB919111620A GB9111620D0 (en) 1991-05-30 1991-05-30 Boundary layer control

Publications (3)

Publication Number Publication Date
GB9211225D0 GB9211225D0 (en) 1992-07-15
GB2256253A GB2256253A (en) 1992-12-02
GB2256253B true GB2256253B (en) 1995-01-11

Family

ID=10695800

Family Applications (2)

Application Number Title Priority Date Filing Date
GB919111620A Pending GB9111620D0 (en) 1991-05-30 1991-05-30 Boundary layer control
GB9211225A Expired - Fee Related GB2256253B (en) 1991-05-30 1992-05-27 Boundary layer control

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB919111620A Pending GB9111620D0 (en) 1991-05-30 1991-05-30 Boundary layer control

Country Status (6)

Country Link
EP (1) EP0585305A1 (en)
AU (1) AU1767292A (en)
CA (1) CA2106850A1 (en)
GB (2) GB9111620D0 (en)
IL (1) IL102048A0 (en)
WO (1) WO1992021560A1 (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4414205C2 (en) * 1994-04-23 1999-09-02 Daimler Chrysler Aerospace Arrangement for boundary layer suction
GB2294709B (en) * 1994-11-04 1998-03-04 Rolls Royce Plc A method of manufacturing a porous material
GB9914652D0 (en) 1999-06-24 1999-08-25 British Aerospace Laminar flow control system and suction panel for use therein
NZ511661A (en) 2001-05-11 2003-09-26 Graham Bond Grove An improved aerofoil
FR2850353B1 (en) * 2003-01-29 2005-12-30 Const Aeronautiques Du Nord Es TURBULENCE MODULATION DEVICE FOR AIRCRAFT
EP1607624A3 (en) * 2004-06-15 2008-11-26 NORDEX ENERGY GmbH Turbine blade for a wind turbine
WO2011128069A1 (en) * 2010-04-12 2011-10-20 Airbus Operations Gmbh Profile-plate portion for use as an outer wall of a flow body, method for producing a profile-plate portion, and flow-body component with a suction-extraction device for fluid
DE102010036154B4 (en) 2010-09-02 2017-01-26 Airbus Operations Gmbh An air-sucking vehicle body component, method for manufacturing an air-sucking vehicle body component and vehicle, in particular aircraft, with an air-sucking vehicle body component
US9745053B2 (en) 2014-11-11 2017-08-29 Airbus Operations Gmbh Aerodynamic component and method for producing an aerodynamic component
EP3428062A1 (en) 2017-07-11 2019-01-16 Airbus Operations GmbH A leading edge structure for a flow control system of an aircraft
EP3466810B1 (en) 2017-10-09 2022-07-13 Airbus Operations GmbH Vertical tail unit for flow control
EP3466811B1 (en) 2017-10-09 2023-06-21 Airbus Operations GmbH Vertical tail unit for flow control
GB2567683A (en) 2017-10-20 2019-04-24 Airbus Operations Ltd Apparatus for laminar flow control
US11396366B2 (en) * 2018-09-28 2022-07-26 Rohr, Inc. Active laminar flow control structural plenums fastened
US11414203B2 (en) 2018-09-28 2022-08-16 Rohr, Inc. Active laminar flow control plenum panel arrangement
US11524770B2 (en) 2018-09-28 2022-12-13 Rohr, Inc. Active laminar flow control plenum panel arrangements and installation methods

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB619722A (en) * 1946-12-20 1949-03-14 English Electric Co Ltd Improvements in and relating to boundary layer control in fluid conduits
GB687723A (en) * 1950-04-06 1953-02-18 Malcolm Robert Head Improvements in suction aerofoils and the like
GB713426A (en) * 1950-10-31 1954-08-11 Handley Page Ltd Improvements in or relating to external surfaces for moving craft
GB743598A (en) * 1953-04-15 1956-01-18 Power Jets U Res And Developme Aircraft boundary layer suction systems and compressors therefor
GB862032A (en) * 1958-10-03 1961-03-01 Power Jets Res & Dev Ltd Aircraft
GB1240995A (en) * 1967-11-06 1971-07-28 Hawker Siddeley Aviation Ltd Improvements in or relating to aircraft lifting surfaces
US4575030A (en) * 1982-09-13 1986-03-11 The Boeing Company Laminar flow control airfoil
US4749150A (en) * 1985-12-24 1988-06-07 Rohr Industries, Inc. Turbofan duct with noise suppression and boundary layer control

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3128973A (en) * 1964-04-14 Porous material
GB718421A (en) * 1951-02-12 1954-11-17 Fairey Aviat Co Ltd Improvements relating to boundary layer control means for aerofoils and other boundary walls
US2843341A (en) * 1956-01-18 1958-07-15 Robert E Dannenberg Airfoils, variable permeability material and method of fabrication thereof
US3467348A (en) * 1967-10-10 1969-09-16 Jerome H Lemelson Aircraft structures and systems
US4296899A (en) * 1977-06-30 1981-10-27 The Boeing Company Apparatus and method for manufacturing laminar flow control aircraft structure
US4258889A (en) * 1979-03-29 1981-03-31 The Boeing Company Method and apparatus for laminar flow control

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB619722A (en) * 1946-12-20 1949-03-14 English Electric Co Ltd Improvements in and relating to boundary layer control in fluid conduits
GB687723A (en) * 1950-04-06 1953-02-18 Malcolm Robert Head Improvements in suction aerofoils and the like
GB713426A (en) * 1950-10-31 1954-08-11 Handley Page Ltd Improvements in or relating to external surfaces for moving craft
GB743598A (en) * 1953-04-15 1956-01-18 Power Jets U Res And Developme Aircraft boundary layer suction systems and compressors therefor
GB862032A (en) * 1958-10-03 1961-03-01 Power Jets Res & Dev Ltd Aircraft
GB1240995A (en) * 1967-11-06 1971-07-28 Hawker Siddeley Aviation Ltd Improvements in or relating to aircraft lifting surfaces
US4575030A (en) * 1982-09-13 1986-03-11 The Boeing Company Laminar flow control airfoil
US4749150A (en) * 1985-12-24 1988-06-07 Rohr Industries, Inc. Turbofan duct with noise suppression and boundary layer control

Also Published As

Publication number Publication date
AU1767292A (en) 1993-01-08
WO1992021560A1 (en) 1992-12-10
EP0585305A1 (en) 1994-03-09
GB9111620D0 (en) 1991-07-24
IL102048A0 (en) 1992-12-30
GB9211225D0 (en) 1992-07-15
GB2256253A (en) 1992-12-02
CA2106850A1 (en) 1992-12-01

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20000527