GB643987A - Improvements in or relating to aircraft - Google Patents
Improvements in or relating to aircraftInfo
- Publication number
- GB643987A GB643987A GB30796/46A GB3079646A GB643987A GB 643987 A GB643987 A GB 643987A GB 30796/46 A GB30796/46 A GB 30796/46A GB 3079646 A GB3079646 A GB 3079646A GB 643987 A GB643987 A GB 643987A
- Authority
- GB
- United Kingdom
- Prior art keywords
- wing
- flaps
- pressure
- aircraft
- nose
- 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
- 239000012530 fluid Substances 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
- B64C2230/06—Boundary layer controls by explicitly adjusting fluid flow, e.g. by using valves, variable aperture or slot areas, variable pump action or variable fluid pressure
-
- 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)
- Control Of Turbines (AREA)
Abstract
643,987. Controlling aircraft. STALKER, E. A. Oct. 16, 1946, No. 30796. Convention date, Nov. 26, 1945. [Class 4] An aircraft wing is provided with nose and tail flaps, and flap-actuating mechanism responsive to pressure difference at two spaced points on the upper surface of the wing between the flaps, whereby relative adjustment of the flaps in co-ordination is effected in response to variations in the pressure difference so as to maintain a predetermined pressure distribution over the wing surface. As shown, the invention is applied to a tailless aircraft with swept-back wings, the latter being of thick section and pronounced camber, to produce a substantially constant pressure over the major portion of the chord, as shown by the curve 86, Fig. 10, such a pressure distribution serving to reduce tip stalling due to outward airflow. The nose and tail flaps 6, 8 are hinged to the underside of the wing at points 100, 102 and the pressure control points 110, 112 on the upper wing surface are connected to bellows 118, 119 controlling a valve 120 which governs the supply of pressure fluid to a power jack 122 operating the flaps through links 104, 106. In operation movement of the tail flap 8 by the pilot modifies the pressure distribution on the wing surface, which is restored to its original form by the automatic operation of the nose flap 6. In order to reduce still further the tendency to tip stalling, the boundary layer is sucked through slots 130, 131 in the upper surface of the outboard wing portions, and discharged through slots 134, 136 in the inboard portions. The wing profile is derived from a symmetrical section, Fig. 9 (not shown), of which the leading edge portion is substantially elliptical in section.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US643987XA | 1945-11-26 | 1945-11-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB643987A true GB643987A (en) | 1950-10-04 |
Family
ID=22055685
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB30796/46A Expired GB643987A (en) | 1945-11-26 | 1946-10-16 | Improvements in or relating to aircraft |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB643987A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102554826A (en) * | 2011-12-28 | 2012-07-11 | 西北工业大学 | Positioning and clamping device |
CN102554827A (en) * | 2011-12-28 | 2012-07-11 | 西北工业大学 | Positioning and clamping device used for assembling front flap in airplane |
WO2013120472A1 (en) * | 2012-02-15 | 2013-08-22 | Technische Universität Braunschweig Carolo-Wilhelmina | Wing |
-
1946
- 1946-10-16 GB GB30796/46A patent/GB643987A/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102554826A (en) * | 2011-12-28 | 2012-07-11 | 西北工业大学 | Positioning and clamping device |
CN102554827A (en) * | 2011-12-28 | 2012-07-11 | 西北工业大学 | Positioning and clamping device used for assembling front flap in airplane |
CN102554826B (en) * | 2011-12-28 | 2014-03-12 | 西北工业大学 | Positioning and clamping device |
CN102554827B (en) * | 2011-12-28 | 2014-03-12 | 西北工业大学 | Positioning and clamping device used for assembling front flap in airplane |
WO2013120472A1 (en) * | 2012-02-15 | 2013-08-22 | Technische Universität Braunschweig Carolo-Wilhelmina | Wing |
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