DE102004036444B3 - Aerodynamic resistance reducing device for towing body consists of shell to go on towing body, with preset wall thickness and curved front end - Google Patents
Aerodynamic resistance reducing device for towing body consists of shell to go on towing body, with preset wall thickness and curved front end Download PDFInfo
- Publication number
- DE102004036444B3 DE102004036444B3 DE102004036444A DE102004036444A DE102004036444B3 DE 102004036444 B3 DE102004036444 B3 DE 102004036444B3 DE 102004036444 A DE102004036444 A DE 102004036444A DE 102004036444 A DE102004036444 A DE 102004036444A DE 102004036444 B3 DE102004036444 B3 DE 102004036444B3
- Authority
- DE
- Germany
- Prior art keywords
- towed body
- sleeve
- wall thickness
- towing body
- shell
- 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 - Fee Related
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41J—TARGETS; TARGET RANGES; BULLET CATCHERS
- F41J9/00—Moving targets, i.e. moving when fired at
- F41J9/08—Airborne targets, e.g. drones, kites, balloons
- F41J9/10—Airborne targets, e.g. drones, kites, balloons towed
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
- Body Structure For Vehicles (AREA)
- Vehicle Body Suspensions (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
Description
Die Erfindung betrifft eine Vorrichtung zur Verminderung des aerodynamischen Widerstandes eines Schleppkörpers.The The invention relates to a device for reducing the aerodynamic Resistance of a towed body.
Aus
Aus
Zur Verminderung des aerodynamischen Widerstandes des Schleppkörpers ist es z.B. möglich, bei gegebenem Rumpfdurchmesser den Durchmesser des ebenen Teils der stumpfen Nase zu verringern und den Bereich des Schleppkörpers zwischen Nase und Rumpf mit einem Übergangsradius zu versehen. Ein Nachteil hierbei ist allerdings, dass sich dadurch auch die thermische Abstrahlfläche verringert, was nachteilige Auswirkung auf die Simulation der thermischen Signatur von Zielflugkörpern hat.to Reduction of the aerodynamic drag of the tow body is it e.g. possible, at given hull diameter the diameter of the flat part of the To reduce blunt nose and the area of the tow body between nose and hull with a transition radius to provide. A disadvantage here, however, is that thereby also the thermal radiating surface reduces, which adverse effect on the simulation of thermal Signature of target missiles Has.
Es ist somit Aufgabe der Erfindung den aerodynamische Widerstand eines Schleppkörpers zu verringern.It Thus, the object of the invention is the aerodynamic resistance of a towed body to reduce.
Diese Aufgabe wird mit der Vorrichtung gemäß Patentanspruch 1 gelöst. Vorteilhafte Ausführungen der Erfindung sind Gegenstand von Unteransprüchen.These The object is achieved with the device according to claim 1. advantageous versions The invention are the subject of subclaims.
Erfindungsgemäß ist die Vorrichtung zur Verringerung des aerodynamischen Widerstandes eines Schleppkörpers eine auf den Schleppkörper aufbringbare Hülse mit einer vorgebbaren Wanddicke, welche stromaufwärts einen Kantenradius aufweist. Dadurch wird zwar der Durchmesser des Schleppkörpers und damit die projizierte Fläche im vorderen Bugsegment vergrößert, durch den Kantenradius allerdings wird der Beiwert des aerodynamischen Widerstandes und damit der aerodynamische Widerstand selbst wesentlich verringert.According to the invention Device for reducing the aerodynamic drag of a towed body on the towed body Applicable sleeve with a predeterminable wall thickness, which upstream one Edge radius has. As a result, although the diameter of the towed body and hence the projected area enlarged in the front bow segment, through the edge radius, however, is the coefficient of aerodynamic Resistance and thus the aerodynamic resistance itself essential reduced.
Die Erfindung sowie weitere vorteilhafte Ausgestaltungen der Erfindung werden im folgenden anhand von Zeichnungen näher erläutert. Es zeigen:The Invention and further advantageous embodiments of the invention are explained in more detail below with reference to drawings. Show it:
Der
Schleppkörper
Die
erfindungsgemäße Hülse
Im
vorderen Bereich (stromaufwärts)
der Hülse
Durch
die Hülse
Im
weiteren Strömungsverlauf
weist die Hülse
Im
weiteren Strömungsverlauf
weist die Hülse
Die
Gesamtlänge
L der Hülse
Auf der Abszisse ist der Anstellwinkel des Schleppkörpers aufgetragen. Ein Anstellwinkel von 0° bedeutet hierbei, dass die Strömung unter einem Winkel von 90° auf die ebene Nase des Schleppkörpers auftrifft.On the abscissa is the angle of attack of the towed body applied. An angle of attack of 0 ° means Here, that the flow at an angle of 90 ° the flat nose of the towed body incident.
Auf der Ordinate ist der cw-Wertes eines Schleppkörpers mit einer erfindungsgemäßen Hülse bezogen auf den cw-Wert eines Schleppkörpers ohne Hülse aufgetragen. Das Diagramm zeigt für den Schleppkörper mit einer erfindungsgemäßen Hülse bei einem Anstellwinkel von 0° einen cw-Wertes von ca. 45% und bei einem Anstellwinkel von +/- 20° einen cw-Wertes von ca. 90% bezogen auf den cw-Wert des Schleppkörpers ohne Hülse an.On the ordinate is the cw value of a towed body with a sleeve according to the invention on the cw value of a towed body without Sleeve applied. The diagram shows for the towed body with a sleeve according to the invention an angle of attack of 0 ° cw value of approx. 45% and with an angle of attack of +/- 20 ° a cw value of about 90% based on the cw value of the towed body without sleeve on.
Claims (9)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004036444A DE102004036444B3 (en) | 2004-07-27 | 2004-07-27 | Aerodynamic resistance reducing device for towing body consists of shell to go on towing body, with preset wall thickness and curved front end |
DE502005010060T DE502005010060D1 (en) | 2004-07-27 | 2005-06-08 | Device for reducing the aerodynamic drag of a towed body |
EP05012308A EP1621845B1 (en) | 2004-07-27 | 2005-06-08 | Device for reducing the aerodynamic resistance of a towed body |
ES05012308T ES2348037T3 (en) | 2004-07-27 | 2005-06-08 | DEVICE TO REDUCE THE AERODYNAMIC RESISTANCE OF A TOWED ARTEFACT. |
AT05012308T ATE477469T1 (en) | 2004-07-27 | 2005-06-08 | DEVICE FOR REDUCING THE AERODYNAMIC RESISTANCE OF A TOWING BODY |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004036444A DE102004036444B3 (en) | 2004-07-27 | 2004-07-27 | Aerodynamic resistance reducing device for towing body consists of shell to go on towing body, with preset wall thickness and curved front end |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102004036444B3 true DE102004036444B3 (en) | 2006-01-19 |
Family
ID=35064580
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102004036444A Expired - Fee Related DE102004036444B3 (en) | 2004-07-27 | 2004-07-27 | Aerodynamic resistance reducing device for towing body consists of shell to go on towing body, with preset wall thickness and curved front end |
DE502005010060T Active DE502005010060D1 (en) | 2004-07-27 | 2005-06-08 | Device for reducing the aerodynamic drag of a towed body |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE502005010060T Active DE502005010060D1 (en) | 2004-07-27 | 2005-06-08 | Device for reducing the aerodynamic drag of a towed body |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1621845B1 (en) |
AT (1) | ATE477469T1 (en) |
DE (2) | DE102004036444B3 (en) |
ES (1) | ES2348037T3 (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE69622490T2 (en) * | 1995-10-13 | 2002-11-07 | Bae Systems Electronics Ltd., Farnborough | Resistance-building aerodynamic device |
EP0911601B1 (en) * | 1997-10-22 | 2004-03-24 | Uwins, Stewart Edward | Aerial target system |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR841452A (en) * | 1938-07-29 | 1939-05-22 | Towing windsock for night aerial fire | |
FR1435960A (en) * | 1965-03-09 | 1966-04-22 | Aerazur Constr Aeronaut | Fabric windsock, fixed or towed, with device increasing its stability in the wind |
US3453958A (en) * | 1968-02-20 | 1969-07-08 | William Lai | Infrared flare having a shroud for enhancing the radiation thereof |
-
2004
- 2004-07-27 DE DE102004036444A patent/DE102004036444B3/en not_active Expired - Fee Related
-
2005
- 2005-06-08 AT AT05012308T patent/ATE477469T1/en active
- 2005-06-08 EP EP05012308A patent/EP1621845B1/en not_active Not-in-force
- 2005-06-08 DE DE502005010060T patent/DE502005010060D1/en active Active
- 2005-06-08 ES ES05012308T patent/ES2348037T3/en active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE69622490T2 (en) * | 1995-10-13 | 2002-11-07 | Bae Systems Electronics Ltd., Farnborough | Resistance-building aerodynamic device |
EP0911601B1 (en) * | 1997-10-22 | 2004-03-24 | Uwins, Stewart Edward | Aerial target system |
Also Published As
Publication number | Publication date |
---|---|
ES2348037T3 (en) | 2010-11-29 |
EP1621845A1 (en) | 2006-02-01 |
ATE477469T1 (en) | 2010-08-15 |
DE502005010060D1 (en) | 2010-09-23 |
EP1621845B1 (en) | 2010-08-11 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8100 | Publication of patent without earlier publication of application | ||
8364 | No opposition during term of opposition | ||
R081 | Change of applicant/patentee |
Owner name: AIRBUS DEFENCE AND SPACE GMBH, DE Free format text: FORMER OWNER: EADS DEUTSCHLAND GMBH, 85521 OTTOBRUNN, DE Effective date: 20140916 |
|
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |