DE19729130A1 - Aircraft lift surface - Google Patents
Aircraft lift surfaceInfo
- Publication number
- DE19729130A1 DE19729130A1 DE19729130A DE19729130A DE19729130A1 DE 19729130 A1 DE19729130 A1 DE 19729130A1 DE 19729130 A DE19729130 A DE 19729130A DE 19729130 A DE19729130 A DE 19729130A DE 19729130 A1 DE19729130 A1 DE 19729130A1
- Authority
- DE
- Germany
- Prior art keywords
- oscillators
- lift surface
- valves
- aircraft lift
- aircraft
- 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.)
- Withdrawn
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
-
- 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)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
Description
Es ist bekannt geworden, daß mittels Micro-Aktuatoren kleine Klappen an den Flugzeugtragflächen eines Flugzeuges kontrolliert gesteuert werden sollen, um so die aerodynamischen Eigenschaften eines Flugzeuges zu verbessern. Dieses Verfahren bedarf wegen der Mechanik eines beträchtlichen Wartungsaufwandes und ist kostenintensiv und störanfällig.It has become known that small flaps on the by means of micro-actuators Aircraft wings of an aircraft are to be controlled in a controlled manner, to improve the aerodynamic properties of an aircraft. This The process requires considerable maintenance work due to the mechanics and is expensive and prone to failure.
Erfindungsgemäß werden in den Tragflächen Fig. 1 (1) eines Flugzeuges fluidi
sche Oszillatoren Fig. 1 (2), Fig. 2 (1, 2) integriert, die durch die einströmen
den Luftmengen oszillatorische Wirbel an den Tragflächen eines Flugzeuges
erzeugen und so die aerodynamischen Eigenschaften verbessern. Die Frequenz
eines fluidischen Oszillators ist:
According to the invention, fluidic oscillators Fig. 1 ( 2 ), Fig. 2 ( 1 , 2 ) are integrated in the wings Fig. 1 ( 1 ) of an aircraft, which generate oscillatory vortices on the wings of an aircraft due to the inflow of air and thus the improve aerodynamic properties. The frequency of a fluidic oscillator is:
wobei f die Frequenz des Oszillators, Q der einströmende Luftvolumenstrom, ρ die Dichte der Luft und K eine Konstante ist.where f is the frequency of the oscillator, Q is the incoming air volume flow, ρ is the density of air and K is a constant.
Erfindungsgemäß werden die Oszillationen der fluidischen Oszillatoren Fig. 2 (1, 2) kontrolliert mit Ventilen Fig. 2 (3) unterbrochen. Durch Proportional ventile Fig. 2 (4) kann der Differenzdruck in den Oszillatoren Fig. 2 (1, 2) gesteuert werden und somit kontrollierte Frequenzen erzeugt werden.According to the invention, the oscillations of the fluidic oscillators Fig. 2 ( 1 , 2 ) are interrupted in a controlled manner with valves Fig. 2 ( 3 ). The differential pressure in the oscillators Fig. 2 ( 1 , 2 ) can be controlled by proportional valves Fig. 2 ( 4 ) and thus controlled frequencies can be generated.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19729130A DE19729130A1 (en) | 1997-07-08 | 1997-07-08 | Aircraft lift surface |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19729130A DE19729130A1 (en) | 1997-07-08 | 1997-07-08 | Aircraft lift surface |
Publications (1)
Publication Number | Publication Date |
---|---|
DE19729130A1 true DE19729130A1 (en) | 1999-01-14 |
Family
ID=7835007
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19729130A Withdrawn DE19729130A1 (en) | 1997-07-08 | 1997-07-08 | Aircraft lift surface |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE19729130A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102017001066A1 (en) | 2017-02-06 | 2018-08-09 | Wolfgang Merkel | Improvement of the aerodynamic properties of an aircraft wing 2 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2348308B2 (en) * | 1973-09-26 | 1978-03-30 | Messerschmitt-Boelkow-Blohm Gmbh, 8000 Muenchen | Electrofluidic converter |
DE3441688A1 (en) * | 1983-11-18 | 1985-05-30 | General Electric Co., Schenectady, N.Y. | Fail-safe servo valve system |
-
1997
- 1997-07-08 DE DE19729130A patent/DE19729130A1/en not_active Withdrawn
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2348308B2 (en) * | 1973-09-26 | 1978-03-30 | Messerschmitt-Boelkow-Blohm Gmbh, 8000 Muenchen | Electrofluidic converter |
DE3441688A1 (en) * | 1983-11-18 | 1985-05-30 | General Electric Co., Schenectady, N.Y. | Fail-safe servo valve system |
Non-Patent Citations (2)
Title |
---|
OTT,M.: Anwendung der strömungsmechanischen Verstärkertechnik in Regelsystemen für Strahltriebwerke. In: Luftfahrttechnik - Raumfahrttechnik, Nr. 12, 1966, S.354-259 * |
PELZ,E.: Pneumatische Strahlelemente. In: msr messen-steuern-regeln, H. 5, Mai 1965, S.89-112 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102017001066A1 (en) | 2017-02-06 | 2018-08-09 | Wolfgang Merkel | Improvement of the aerodynamic properties of an aircraft wing 2 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
8122 | Nonbinding interest in granting licences declared | ||
8139 | Disposal/non-payment of the annual fee |