DE3634054A1 - Method for reducing the flow resistance of underwater running bodies and running bodies with reduced flow resistance - Google Patents
Method for reducing the flow resistance of underwater running bodies and running bodies with reduced flow resistance Download PDFInfo
- Publication number
- DE3634054A1 DE3634054A1 DE3634054A DE3634054A DE3634054A1 DE 3634054 A1 DE3634054 A1 DE 3634054A1 DE 3634054 A DE3634054 A DE 3634054A DE 3634054 A DE3634054 A DE 3634054A DE 3634054 A1 DE3634054 A1 DE 3634054A1
- Authority
- DE
- Germany
- Prior art keywords
- running body
- lateral surface
- gas
- flow resistance
- flow
- 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.)
- Pending
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Classifications
-
- 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
-
- 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
- F15D1/002—Influencing flow of fluids by influencing the boundary layer
- F15D1/0065—Influencing flow of fluids by influencing the boundary layer using active means, e.g. supplying external energy or injecting fluid
-
- 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
- F15D1/002—Influencing flow of fluids by influencing the boundary layer
- F15D1/0065—Influencing flow of fluids by influencing the boundary layer using active means, e.g. supplying external energy or injecting fluid
- F15D1/008—Influencing flow of fluids by influencing the boundary layer using active means, e.g. supplying external energy or injecting fluid comprising fluid injection or suction means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B19/00—Marine torpedoes, e.g. launched by surface vessels or submarines; Sea mines having self-propulsion means
- F42B19/12—Propulsion specially adapted for torpedoes
- F42B19/125—Torpedoes provided with drag-reducing means
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
Ein Verfahren zum Verringern des Strömungswiderstandes von Unterwasser-Laufkörpern (11) und ein Laufkörper (11) mit verringertem Strömungswiderstand sollen dafür ausgelegt werden, mit einfacheren Mitteln eine Gasschicht (16) aufzubauen, die einen direkten Kontakt der Anströmung (14) des umgebenden Wassers (15) mit der Projektil-Außenmantelfläche (13) möglichst verhindert und dadurch Reibungsverluste reduziert. Dazu ist vorgesehen, die Gasschicht (16) unmittelbar aus der Wasser-Anströmung (14) zu gewinnen, indem diese entweder mit den heißen Verbrennungsgasen von auf der Mantelfläche (13) aufgebrachten Brandmassen-Beschichtungen (17), oder mit einem hydroaktiven Stoff (24) im Projektil-Kopfbereich (22) direkt zu energiereichem Gas wie vorzugsweise Wasserstoff, reagiert. Vorzugsweise ist die erzeugte Wasserdampf- oder Reaktionsgasmenge so ausgelegt, daß sie sich mit der Anströmung (14) entlang der Projektil-Mantelfläche (13) verlagert und hinter dem Projektil (11) zu einer Blasenansammlung (19) führt, die beispielsweise die hydroakustische Abstrahlung von hier austretenden Vortriebsgasen (21) bedämpft und abschirmt sowie im Frequenzspektrum beeinflußt, wodurch die Ortungs- und Klassifizierungsmöglichkeit des Laufkörpers (11) mittels einer Sonaranlage weiter reduziert wird.A method for reducing the flow resistance of underwater running bodies (11) and a running body (11) with reduced flow resistance should be designed to establish a gas layer (16) with simpler means, which makes direct contact of the flow (14) of the surrounding water ( 15) with the projectile outer lateral surface (13) as possible prevented and thereby reduces friction losses. For this purpose, the gas layer (16) is to be obtained directly from the water inflow (14) by applying these with either the hot combustion gases of fire mass coatings (17) applied to the lateral surface (13) or with a hydroactive substance (24 ) in the projectile head region (22) directly to high-energy gas such as preferably hydrogen, reacts. Preferably, the amount of steam or reaction gas generated is designed so that it moves with the flow (14) along the projectile lateral surface (13) and behind the projectile (11) leads to a bubble accumulation (19), for example, the hydroacoustic radiation of attenuated and shielded here and influenced in the frequency spectrum, whereby the locating and classification possibility of the running body (11) is further reduced by means of a sonar system here emerging propellant gases (21).
Description
Die Erfindung betrifft ein Verfahren gemäß dem Oberbegriff des Anspruches 1 sowie einen Laufkörper gemäß dem Oberbegriff des Anspruches 6.The invention relates to a method according to the preamble of claim 1 and a running body according to the preamble of claim 6.
Die gattungsbildenden Maßnahmen sind aus der
In Erkenntnis dieser Gegebenheiten liegt der Erfindung die Aufgabe zugrunde, ein Verfahren und einen Laufkörper gattungsgemäßer Art anzugeben, bei denen sich mit einfacheren Mitteln eine Gasschicht zur besonders wirksamen Reduzierung des Strömungswiderstandes erzeugen läßt; wobei die Gasmenge bei geringem Materialeinsatz möglichst groß sein soll, um im Triebwerksbereich hinter dem Laufkörper nach Möglichkeit noch hydroakustisch wünschenswerte Wirkungen zu zeitigen.In recognition of these circumstances, the present invention seeks to provide a method and a running body generic type in which can be generated with simpler means a gas layer for particularly effective reduction of the flow resistance; wherein the amount of gas should be as large as possible with little use of material in order to produce hydroacoustically desirable effects in the engine area behind the running body as far as possible.
Diese Aufgabe ist erfindungsgemäß im wesentlichen dadurch gelöst, daß das Verfahren gattungsgemäßer Art gemäß dem Kennzeichnungsteil des Anspruches 1 und der Laufkörper gattungsgemäßer Art gemäß dem Kennzeichnungsteil des Anspruches 6 ausgelegt sind.This object is achieved according to the invention essentially in that the method of the generic type according to the characterizing part of claim 1 and the running body generic type according to the characterizing part of claim 6 are designed.
Nach dieser Lösung erfolgt mit apparativ denkbar einfachen Mitteln die Bereitstellung großer und energiereicher Gasmengen durch Verdampfung der Wasser-Anströmung mittels der sehr heißen Verbrennungsgase einer Brandmasse, mit der zumindest Teile der Mantelfläche des Laufkörpers beschichtet sind, bzw. durch einen Gasgenerator in Form einer hydroaktiven Substanz, die mit dem anströmenden Wasser reagiert.After this solution is carried out with simple apparatus means of providing large and high-energy gas quantities by evaporation of the water flow by means of the very hot combustion gases of a fire mass with which at least parts of the lateral surface of the running body are coated, or by a gas generator in the form of a hydroactive substance , which reacts with the incoming water.
Zusätzliche Alternativen und Weiterbildungen sowie weitere Merkmale und Vorteile der Erfindung ergeben sich aus den weiteren Ansprüchen und, auch unter Berücksichtigung der Darlegungen in der Zusammenfassung, aus nachstehender Beschreibung von in der Zeichnung unter Beschränkung auf das Wesentliche stark abstrahiert skizzierten bevorzugten Realisierungsbeispielen zur erfindungsgemäßen Lösung.Additional alternatives and developments as well as further features and advantages of the invention will become apparent from the other claims and, also taking into account the comments in the summary, from the following description of the drawing in the drawing on the essentials strongly abstracted outlined preferred implementation examples of the invention.
Es zeigt:It shows:
und
and
Der projektilförmige Unterwasser-Laufkörper
Um diese Reibungsverluste zu reduzieren, ist gemäß
Als Brandmasse für die Beschichtung
Die Anströmung
Beim Ausführungsbeispiel nach
Als hydroaktiver Stoff
Die Bereitstellung der Gasschicht
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- US 3455265 [0002] US 3,455,265 [0002]
Claims (10)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3634054A DE3634054A1 (en) | 1986-10-07 | 1986-10-07 | Method for reducing the flow resistance of underwater running bodies and running bodies with reduced flow resistance |
GB8721525A GB8721525D0 (en) | 1986-10-07 | 1987-09-14 | A method and means for reducing the drag of underwater travelling bodies |
IT2201387A IT2201387A1 (en) | 1986-10-07 | 1987-09-24 | PROCEDURE TO REDUCE THE FLUID DYNAMIC RESISTANCE OF UNDERWATER MOBILE BODIES, AND THE MOBILE BODY OF REDUCED FLUID DYNAMIC RESISTANCE |
SE8703852A SE8703852D0 (en) | 1986-10-07 | 1987-10-06 | REDUCTION OF FLOW RESISTANCE |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3634054A DE3634054A1 (en) | 1986-10-07 | 1986-10-07 | Method for reducing the flow resistance of underwater running bodies and running bodies with reduced flow resistance |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3634054A1 true DE3634054A1 (en) | 2013-12-05 |
Family
ID=6311183
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE3634054A Pending DE3634054A1 (en) | 1986-10-07 | 1986-10-07 | Method for reducing the flow resistance of underwater running bodies and running bodies with reduced flow resistance |
Country Status (4)
Country | Link |
---|---|
DE (1) | DE3634054A1 (en) |
GB (1) | GB8721525D0 (en) |
IT (1) | IT2201387A1 (en) |
SE (1) | SE8703852D0 (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3382831A (en) * | 1967-08-31 | 1968-05-14 | Navy Usa | Torpedo drag reduction apparatus |
US3455265A (en) | 1968-02-28 | 1969-07-15 | Gen Electric | Air film drag reduction stabilization |
FR1592995A (en) * | 1968-11-25 | 1970-05-19 | ||
US4186679A (en) * | 1965-03-17 | 1980-02-05 | The United States Of America As Represented By The Secretary Of The Navy | Torpedo drag reduction employing polymer ejection |
WO1984003265A1 (en) * | 1983-02-28 | 1984-08-30 | Gould Inc | Method of reducing surface friction |
-
1986
- 1986-10-07 DE DE3634054A patent/DE3634054A1/en active Pending
-
1987
- 1987-09-14 GB GB8721525A patent/GB8721525D0/en not_active Ceased
- 1987-09-24 IT IT2201387A patent/IT2201387A1/en unknown
- 1987-10-06 SE SE8703852A patent/SE8703852D0/en unknown
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4186679A (en) * | 1965-03-17 | 1980-02-05 | The United States Of America As Represented By The Secretary Of The Navy | Torpedo drag reduction employing polymer ejection |
US3382831A (en) * | 1967-08-31 | 1968-05-14 | Navy Usa | Torpedo drag reduction apparatus |
US3455265A (en) | 1968-02-28 | 1969-07-15 | Gen Electric | Air film drag reduction stabilization |
FR1592995A (en) * | 1968-11-25 | 1970-05-19 | ||
WO1984003265A1 (en) * | 1983-02-28 | 1984-08-30 | Gould Inc | Method of reducing surface friction |
Also Published As
Publication number | Publication date |
---|---|
SE8703852D0 (en) | 1987-10-06 |
IT2201387A1 (en) | 1988-04-08 |
GB8721525D0 (en) | 2011-11-09 |
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