GB2256253B - Boundary layer control - Google Patents
Boundary layer controlInfo
- 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
Links
- 239000012530 fluid Substances 0.000 abstract 2
- 239000000463 material Substances 0.000 abstract 2
- 229920001169 thermoplastic Polymers 0.000 abstract 2
- 239000004416 thermosoftening plastic Substances 0.000 abstract 2
- 230000001413 cellular effect Effects 0.000 abstract 1
- 238000005553 drilling Methods 0.000 abstract 1
- 239000000843 powder Substances 0.000 abstract 1
- 238000005245 sintering Methods 0.000 abstract 1
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—Arrangements in aircraft of power plant parts or auxiliaries not otherwise provided for
- B64D33/02—Arrangements in aircraft of power plant parts or auxiliaries not otherwise provided for of combustion air intakes
- B64D2033/0226—Arrangements 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)
- Farming Of Fish And Shellfish (AREA)
- Liquid Crystal (AREA)
- Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (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.
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)
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 |
EP2558362B1 (en) * | 2010-04-12 | 2018-07-25 | Airbus Operations GmbH | Profile-plate portion for use as an outer wall of a flow body, 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 |
EP3466811B1 (en) | 2017-10-09 | 2023-06-21 | Airbus Operations GmbH | Vertical tail unit for flow control |
ES2927476T3 (en) | 2017-10-09 | 2022-11-07 | 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 |
US11524770B2 (en) | 2018-09-28 | 2022-12-13 | Rohr, Inc. | Active laminar flow control plenum panel arrangements and installation methods |
US11414203B2 (en) | 2018-09-28 | 2022-08-16 | Rohr, Inc. | Active laminar flow control plenum panel arrangement |
Citations (8)
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)
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 |
-
1991
- 1991-05-30 GB GB919111620A patent/GB9111620D0/en active Pending
-
1992
- 1992-05-27 EP EP92910640A patent/EP0585305A1/en not_active Withdrawn
- 1992-05-27 CA CA002106850A patent/CA2106850A1/en not_active Abandoned
- 1992-05-27 WO PCT/GB1992/000956 patent/WO1992021560A1/en not_active Application Discontinuation
- 1992-05-27 GB GB9211225A patent/GB2256253B/en not_active Expired - Fee Related
- 1992-05-27 AU AU17672/92A patent/AU1767292A/en not_active Abandoned
- 1992-05-29 IL IL102048A patent/IL102048A0/en unknown
Patent Citations (8)
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 |
---|---|
CA2106850A1 (en) | 1992-12-01 |
GB9111620D0 (en) | 1991-07-24 |
GB2256253A (en) | 1992-12-02 |
AU1767292A (en) | 1993-01-08 |
WO1992021560A1 (en) | 1992-12-10 |
GB9211225D0 (en) | 1992-07-15 |
EP0585305A1 (en) | 1994-03-09 |
IL102048A0 (en) | 1992-12-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20000527 |