FR1555531A - - Google Patents
Info
- Publication number
- FR1555531A FR1555531A FR1555531DA FR1555531A FR 1555531 A FR1555531 A FR 1555531A FR 1555531D A FR1555531D A FR 1555531DA FR 1555531 A FR1555531 A FR 1555531A
- Authority
- FR
- France
- Prior art keywords
- wing
- tip
- skin
- boundary layer
- june
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C23/00—Influencing air flow over aircraft surfaces, not otherwise provided for
- B64C23/06—Influencing air flow over aircraft surfaces, not otherwise provided for by generating vortices
-
- 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
- B64C21/06—Influencing air flow over aircraft surfaces by affecting boundary layer flow by use of slot, ducts, porous areas or the like for sucking
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C23/00—Influencing air flow over aircraft surfaces, not otherwise provided for
- B64C23/005—Influencing air flow over aircraft surfaces, not otherwise provided for by other means not covered by groups B64C23/02 - B64C23/08, e.g. by electric charges, magnetic panels, piezoelectric elements, static charges or ultrasounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C2230/00—Boundary layer controls
- B64C2230/20—Boundary layer controls by passively inducing fluid flow, e.g. by means of a pressure difference between both ends of a slot or duct
-
- 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)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
1,151,431. Boundary layer control. NATIONAL RESEARCH DEVELOPMENT CORP. 8 June, 1967 [10 June, 1966], No. 25967/66. Heading F2R. An aircraft wing 1 with an aspect ratio of at least 2:1 and a sweep back of at least 15 degrees, comprises a passage 12 to draw air from the boundary layer, particularly on the suction surface, and eject it from an opening near the aerofoil tip, the passage being formed between the wing and a skin 11 spaced from the wing, and providing an outer surface of aerofoil form. The skin extends for preferably about 25% of the span of the wing 1 from its tip. The skin 11 may form a complete sleeve, Fig. 4, may cover only the top surface and nose of the wing 1, Fig. 6 (not shown), and may cover only the top surface of the wing, being attached at its leading edge to the wing, Fig. 11 (not shown). The air drawn off from the boundary layer may be ejected either from the wing tip, Fig. 7, or from the trailing edge, Fig. 10. The wing may be narrowed near its tip, as at 13, Fig. 7, so that the outer surface of the skin 11 appears as a continuation of the remainder of the wing.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB25967/66A GB1151431A (en) | 1966-06-10 | 1966-06-10 | Improvements in or relating to Aircraft Wings |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR1555531A true FR1555531A (en) | 1969-01-31 |
Family
ID=10236214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR1555531D Expired FR1555531A (en) | 1966-06-10 | 1967-06-09 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US3406929A (en) |
| FR (1) | FR1555531A (en) |
| GB (1) | GB1151431A (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5205519A (en) * | 1992-01-07 | 1993-04-27 | The United States Of America As Represented By The United States National Aeronautics And Space Administration | Boundary layer relaminarization device |
| US5540406A (en) * | 1993-10-25 | 1996-07-30 | Occhipinti; Anthony C. | Hydrofoils and airfoils |
| DE10160315A1 (en) * | 2001-12-07 | 2003-11-13 | Airbus Gmbh | Device for the approach control of an aircraft |
| US7614588B2 (en) * | 2004-12-23 | 2009-11-10 | David Birkenstock | Apparatus system and method for drag reduction |
| GB0625612D0 (en) * | 2006-12-21 | 2007-01-31 | Queen Mary University Of Londo | Establishment of laminar boundary layer flow on aerofoil body |
| US8113466B2 (en) | 2007-09-17 | 2012-02-14 | Birkenstock David T | System and method for drag reduction |
| EP2285674A4 (en) * | 2008-05-23 | 2013-12-18 | David Birkenstock | Boundary layer control system and methods thereof |
| US20150028160A1 (en) * | 2013-06-01 | 2015-01-29 | John Gregory Roncz | Wingtip for a general aviation aircraft |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2661167A (en) * | 1950-04-03 | 1953-12-01 | Morris E Clark | Airplane wing construction with passage from upper surface to trailing edge |
| US2833492A (en) * | 1955-02-07 | 1958-05-06 | Harlan D Fowler | Boundary layer control system with aerodynamic glove |
-
1966
- 1966-06-10 GB GB25967/66A patent/GB1151431A/en not_active Expired
-
1967
- 1967-06-09 US US644869A patent/US3406929A/en not_active Expired - Lifetime
- 1967-06-09 FR FR1555531D patent/FR1555531A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB1151431A (en) | 1969-05-07 |
| US3406929A (en) | 1968-10-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |