DE10105442A1 - Surface structures to reduce air flow resistance are like dots in golf ball in shape and size, depressed or raised, with macroscopic dimensions in mm to cm region - Google Patents
Surface structures to reduce air flow resistance are like dots in golf ball in shape and size, depressed or raised, with macroscopic dimensions in mm to cm regionInfo
- Publication number
- DE10105442A1 DE10105442A1 DE2001105442 DE10105442A DE10105442A1 DE 10105442 A1 DE10105442 A1 DE 10105442A1 DE 2001105442 DE2001105442 DE 2001105442 DE 10105442 A DE10105442 A DE 10105442A DE 10105442 A1 DE10105442 A1 DE 10105442A1
- Authority
- DE
- Germany
- Prior art keywords
- dots
- raised
- shape
- golf ball
- surface structures
- 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- Withdrawn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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B10/00—Means for influencing, e.g. improving, the aerodynamic properties of projectiles or missiles; Arrangements on projectiles or missiles for stabilising, steering, range-reducing, range-increasing or fall-retarding
- F42B10/32—Range-reducing or range-increasing arrangements; Fall-retarding means
- F42B10/38—Range-increasing arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C21/00—Influencing air flow over aircraft surfaces by affecting boundary layer flow
- B64C21/10—Influencing air flow over aircraft surfaces by affecting boundary layer flow using other surface properties, e.g. roughness
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15D—FLUID DYNAMICS, i.e. METHODS OR MEANS FOR INFLUENCING THE FLOW OF GASES OR LIQUIDS
- F15D1/00—Influencing flow of fluids
- F15D1/02—Influencing flow of fluids in pipes or conduits
- F15D1/06—Influencing flow of fluids in pipes or conduits by influencing the boundary layer
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15D—FLUID DYNAMICS, i.e. METHODS OR MEANS FOR INFLUENCING THE FLOW OF GASES OR LIQUIDS
- F15D1/00—Influencing flow of fluids
- F15D1/10—Influencing flow of fluids around bodies of solid material
- F15D1/12—Influencing flow of fluids around bodies of solid material by influencing the boundary layer
-
- 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
Abstract
Description
Der Stand der Technik sagt, daß glatt polierte Oberflächen Gasströmungen einen geringen Widerstand entgegensetzen.The prior art says that smooth polished gas flows oppose little resistance.
Neuere Untersuchungen ließen vermuten, daß Oberflächenstrukturen, nahezu mikroskopisch klein wie auf der Haut und den Schuppen von Fischen entdeckt, den Strömungswiderstand vermindern könnten. Der Erfolg war jedoch mäßig, da der Einfluß der laminaren Unterströmung auf den Gesamtwiderstand gering ist.Recent studies have suggested that surface structures, almost microscopic as on the skin and scales of fish discovered that the flow resistance could decrease. The success was however moderate, since the influence of the laminar underflow on the Overall resistance is low.
Verwendet man jedoch bei Flugzeugen, Raketen, Geschossen und anderen schnell bewegte Gegenständen, Oberflächenstrukturen die in Form und Größe den "dots" der Golfbälle entsprechen bzw. mit ihnen vergleichbar sind, d. h. deren Dimensionen also makroskopisch im Millimeter- bzw. Zentimeterbereich liegen, dann bildet sich an diesen Strukturen eine turbulente Strömungsgrenzschicht aus, die den bisherigen Ablösepunkt z. B. an der Tragfläche eines Flugzeuges verlagert und dadurch dem Wirbelgebiet weniger Energie zuführt.However, it is used on airplanes, missiles, projectiles and others fast moving objects, surface structures in shape and size correspond to or are comparable to the "dots" of golf balls, d. H. their dimensions are macroscopic in the millimeter or centimeter range then turbulent forms on these structures Flow boundary layer from the previous separation point z. B. at the Wing of an aircraft relocated and therefore less the vortex area Supplies energy.
Die Folge ist eine Verminderung des gesamten Luftwiderstandes bzw. des Strömungswiderstandes des von Gasen umströmten Gegenstandes.The result is a reduction in the total air resistance or Flow resistance of the object around which gases flow.
Versieht man die Oberfläche der gasumströmten Körper mit Schuppen, Lamellen oder gar beliebigen Formen, jedoch ähnlicher Größe, dann stellt sich ein entsprechender Effekt ein.If you provide the surface of the gas-flowed body with scales, Slats or any shape, but of similar size, then arises a corresponding effect.
Maßgebend ist wiederum, daß auch diese Strukturen in ihren Ausmaßen im makroskopischen Bereich liegen.It is again decisive that these structures also have their dimensions in the macroscopic range.
Alle Strukturen sind entsprechend den Strömungsgeschwindigkeiten, noch in ihren Ausmaßen zu optimieren.All structures are still in according to the flow velocities optimize their dimensions.
Die Vorteile dieser Oberflächenstrukturen, ob vertieft oder erhaben, liegen klar auf der Hand: Die Verminderung des Strömungswiderstandes vermindert den Energieeinsatz.The advantages of these surface structures, whether deepened or raised, are clear on hand: The reduction in flow resistance reduces the Energy.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2001105442 DE10105442A1 (en) | 2001-02-07 | 2001-02-07 | Surface structures to reduce air flow resistance are like dots in golf ball in shape and size, depressed or raised, with macroscopic dimensions in mm to cm region |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2001105442 DE10105442A1 (en) | 2001-02-07 | 2001-02-07 | Surface structures to reduce air flow resistance are like dots in golf ball in shape and size, depressed or raised, with macroscopic dimensions in mm to cm region |
Publications (1)
Publication Number | Publication Date |
---|---|
DE10105442A1 true DE10105442A1 (en) | 2002-08-22 |
Family
ID=7673099
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE2001105442 Withdrawn DE10105442A1 (en) | 2001-02-07 | 2001-02-07 | Surface structures to reduce air flow resistance are like dots in golf ball in shape and size, depressed or raised, with macroscopic dimensions in mm to cm region |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE10105442A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102020002367A1 (en) | 2020-04-20 | 2021-10-21 | Jörg Schulz | Air resistance reduction by means of microturbulence-generating surfaces on airships |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE8430377U1 (en) * | 1984-10-16 | 1985-05-02 | Hüßner, Joachim, 5163 Langerwehe | BODY FOR FAST GROUND VEHICLES |
US5171623A (en) * | 1990-12-27 | 1992-12-15 | Yee Norman D | Drag reducing surface depressions |
US5200573A (en) * | 1991-05-28 | 1993-04-06 | Blood Charles L | Projectile having a matrix of cavities on its surface |
US5540406A (en) * | 1993-10-25 | 1996-07-30 | Occhipinti; Anthony C. | Hydrofoils and airfoils |
DE19613304A1 (en) * | 1996-04-03 | 1997-10-09 | Ernst Koelle | Upper surface structure for outer skin of bodies in flow medium |
US6131853A (en) * | 1999-06-09 | 2000-10-17 | Bauer; Steven X. S. | Micro-drag generators for aerodynamic and hydrodynamic braking and control |
-
2001
- 2001-02-07 DE DE2001105442 patent/DE10105442A1/en not_active Withdrawn
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE8430377U1 (en) * | 1984-10-16 | 1985-05-02 | Hüßner, Joachim, 5163 Langerwehe | BODY FOR FAST GROUND VEHICLES |
US5171623A (en) * | 1990-12-27 | 1992-12-15 | Yee Norman D | Drag reducing surface depressions |
US5200573A (en) * | 1991-05-28 | 1993-04-06 | Blood Charles L | Projectile having a matrix of cavities on its surface |
US5540406A (en) * | 1993-10-25 | 1996-07-30 | Occhipinti; Anthony C. | Hydrofoils and airfoils |
DE19613304A1 (en) * | 1996-04-03 | 1997-10-09 | Ernst Koelle | Upper surface structure for outer skin of bodies in flow medium |
US6131853A (en) * | 1999-06-09 | 2000-10-17 | Bauer; Steven X. S. | Micro-drag generators for aerodynamic and hydrodynamic braking and control |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102020002367A1 (en) | 2020-04-20 | 2021-10-21 | Jörg Schulz | Air resistance reduction by means of microturbulence-generating surfaces on airships |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Yarin et al. | Collision phenomena in liquids and solids | |
WO2003000483A1 (en) | Body with improved surface properties | |
DE112004000582T5 (en) | Method for reducing kinetic friction | |
Candy et al. | The thing from the future | |
CN201070534Y (en) | Recreation wind tunnel | |
DE10105442A1 (en) | Surface structures to reduce air flow resistance are like dots in golf ball in shape and size, depressed or raised, with macroscopic dimensions in mm to cm region | |
DE29922454U1 (en) | Expandable balloon for balloon catheters | |
Bloom | The omnologist manifesto | |
ZHANG et al. | Experimental investigation of 2-D inlet model in non-uniform supersonic flow | |
Mohammadi Sanavi et al. | Effect of Need-Supportive Environment on Sport Performance of Primary School Students | |
Lester | Suicide by jumping: why do women survive more often | |
FRIGERIO | NEO-GNOSTICISMO E MANIPOLAZIONE CORPOREA. | |
Ross | George Hughes | |
Winter | Edwin Booth | |
Hu | Analysis of The Venturi Tunnel and Ground Effect | |
Banja | Kinematics and aerodynamics parameters on paralympic discus throw | |
DE102014003214B4 (en) | Arrangement of wings on or in an airframe and or bodywork. | |
Duarte | Appeared earlier in the DIALOGUE series | |
Esmaiili Roozbahany et al. | Study of Elements of the Talot’s Story in Surah Baqarah based on Plot Element | |
Ng et al. | G-cueing system tuning optimization | |
Couybes | Aerospace jobs for the handicapped. | |
DE102009042163B4 (en) | Process for the reduction of noise caused by a gas jet | |
Alkawakzeh | The effect of foreign penal judgment within the national territory (A comparative study) | |
Zhang et al. | Sphere-cone pressure prediction in supersonic/hypersonic flow | |
Maroński | Aeronautical inspirations in biomechanics |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
8130 | Withdrawal |