EP0942865B1 - Dispositif de leurrage a l'encontre des torpilles a remontee de sillage - Google Patents
Dispositif de leurrage a l'encontre des torpilles a remontee de sillage Download PDFInfo
- Publication number
- EP0942865B1 EP0942865B1 EP98947619A EP98947619A EP0942865B1 EP 0942865 B1 EP0942865 B1 EP 0942865B1 EP 98947619 A EP98947619 A EP 98947619A EP 98947619 A EP98947619 A EP 98947619A EP 0942865 B1 EP0942865 B1 EP 0942865B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- effervescent material
- wake
- sea water
- effervescent
- mixture
- 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 - Lifetime
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
- F41H11/00—Defence installations; Defence devices
- F41H11/02—Anti-aircraft or anti-guided missile or anti-torpedo defence installations or systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63G—OFFENSIVE OR DEFENSIVE ARRANGEMENTS ON VESSELS; MINE-LAYING; MINE-SWEEPING; SUBMARINES; AIRCRAFT CARRIERS
- B63G9/00—Other offensive or defensive arrangements on vessels against submarines, torpedoes, or mines
- B63G9/02—Means for protecting vessels against torpedo attack
Definitions
- the present invention relates to a decoy device for wake-up torpedoes.
- lures of torpedoes which are devices that emit acoustic signals resembling those of a ship.
- the invention proposes, for its part, a torpedo decoy device for followed by a wake comprising a body made of a reacting effervescent material with seawater to generate a cloud of bubbles simulating a false wake, characterized in that it has an envelope made of a material soluble in sea water which delays the reaction of the effervescent material with the water of sea.
- the thickness of the envelope is advantageously calibrated so that, when said device is immersed, the effervescent material does not begins to react with seawater only after a period of fall predetermined for said device.
- Such an envelope improves the effectiveness of the device.
- this thickness is calibrated so that the effervescent material does not start to react with sea water only when it is about 10 m deep.
- the invention also provides a method of decoying torpedoes, characterized in that devices at sea are dispersed by air aforementioned type.
- the effervescent body of a decoy device conforming to the invention is preferably a tablet made of a non-polluting material and compressible.
- This material must be of a density greater than 1, so that allow the tablet to drop freely to a depth of 10 m, the falling speed conditioning the delay time that the envelope must allow coating said tablet.
- This material is for example a stoichiometric mixture of acid tartaric (density 1.7598) and sodium hydrogen carbonate (density 2, 159).
- Tartaric acid is preferred, however, since it is less hygroscopic and that it avoids any self-priming reaction of effervescence.
- This hardness can be further improved by adding a binder, for example example of cellulosic type.
- binders tend to inhibit the effervescent action of tablets, as well as bringing them to the surface.
- a small lubricant can also be added to the mixture.
- amount (less than 5%), for example 2% magnesium stearate, for avoid seizure on compression of the mixture.
- the bubbles generated by the effervescent tablet at 10 meters deep, i.e. under a pressure of 2 bars, must have dimensions between 30 and 50 ⁇ m (which corresponds to the surface of the water, with bubble sizes between 38 and 63.4 ⁇ m).
- the size bubbles is mainly a function of the granulometry of the materials raw: the finer the raw materials, the more bubbles there are small sizes.
- the particle diameter can for example be less than 100 ⁇ m, be between 100 and 200 ⁇ m or even be included between 200 and 315 ⁇ m.
- the envelope which performs the delay function is made of a material organic.
- It is for example constituted by a coating carried out by spraying or depositing on the tablet a polymer solution. She can also be carried out by capsules in which the bodies are enclosed Effervescent.
- the tablet is as hemispherical as possible or a cylindrical shape.
- the device advantageously further comprises ballast means, intended to allow it to fall faster.
- the distribution is advantageously carried out on both sides of the axis of the axis of the wake S of the ship, with possibly a certain dispersion so as to constitute false wake FS which are attached to the wake S and which can be interpreted by the torpedo as a change of direction from the latter.
- step II The devices projected at sea are immersed (step II in Figure 1), then after a while, once the envelope has melted, begin to generate bubbles (step III) by quickly reaching the steady state bubble generation (step IV).
- This decoy is advantageously completed by arranging the intersections between the wake S and the false wake FS of the decaracterization, as well as jamming and saturation of detectors acoustic torpedoes.
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- General Engineering & Computer Science (AREA)
- Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
- Medicinal Preparation (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Paints Or Removers (AREA)
- Fodder In General (AREA)
- Feed For Specific Animals (AREA)
Description
- la figure 1 illustre une séquence de mise en oeuvre d'un dispositif conforme à un mode de réalisation de l'invention ;
- la figure 2 illustre une configuration de répartition possible pour les faux sillages générés avec les dispositifs proposés par l'invention.
- hydroxypropyméthyl cellulose et dérivés (éthyl, butyl, etc.) ;
- gommes végétales (de type guar, agar, pectine, etc.) ;
- gommes d'origine animale (de type xanthanes, gélatine, albumine, etc.);
- alcool polyvinylique (PVAL) ;
- poly (N-vinylpyrrolidone) (PVP) ;
- poly (oxyde d'éthylène) (PEOX).
| Nature du comprimé | en mm | Hauteur en mm | Masse en g | densité | vitesse de chute en m/s |
| A.tarhique 50% NaHCO3 50% | 6 | 0,53 | 0,2566 | 1,71 | 0.2 |
| A.tarhique 50% NaHCO3 50% | 6 | 0,49 | 0,2288 | 1,65 | 0,21 |
| NaHCO3 50% | 12 | 0,33 | 0,6731 | 1,80 | 0.15 |
| A.tarhique 50% Stéarate 0.08% | 12 | 0,33 | 0,6428 | 1,72 | 0.14 |
| Coupes 100.200 | 6 | 0,43 | 0,1771 | 1,45 | 0,2 |
| NaHCO3 50% A.tarhique 50% | 6 | 0,4 | 0,1565 | 1.38 | - |
| Coupes<100µm | 12 | 0,17 | 0,2810 | 1,46 | 0.1 |
| A.tarhique 50% NaHCO3 50% Stéarate 0,2% | 12 | 0,15 | 0,2820 | 1,66 | 0.1 |
Claims (14)
- Dispositif de leurrage de torpille à suivi de sillage comportant un corps en un matériau effervescent réagissant avec l'eau de mer pour générer un nuage de bulles simulant un faux sillage, caractérisé en ce qu'il présente une enveloppe en un matériau soluble dans l'eau de mer qui retarde la réaction du matériau effervescent avec l'eau de mer.
- Dispositif selon la revendication 1, caractérisé en ce que 'enveloppe est en un matériau organique.
- Dispositif selon la revendication 2, caractérisé en ce que l'épaisseur de l'enveloppe est calibrée pour que, lorsque ledit dispositif est immergé, le matériau effervescent ne commence à réagir avec l'eau de mer qu'après une durée de chute prédéterminée pour ledit dispositif.
- Dispositif selon la revendication 3, caractérisé en ce que cette épaisseur est calibrée pour que le matériau effervescent ne commence à réagir avec l'eau de mer que lorsqu'il se trouve à environ 10 m de profondeur.
- Dispositif selon l'une des revendications 1 à 4, caractérisé en ce que l'enveloppe est en un matériau qui est de l'hydroxypropyméthyl cellulose ou un dérivé, une gomme végétale ou d'origine animale, un alcool polyvinylique, un poly (N-vinylpyrrolidone), un poly (oxyde d'éthylène) ou un mélange de ces composés.
- Dispositif selon l'une des revendications précédentes, caractérisé en ce que le matériau effervescent comprend un mélange d'acide tartrique et d'hydrogénocarbonate de sodium.
- Dispositif selon l'une des revendications 1 à 5, caractérisé en ce que le matériau effervescent comprend un mélange d'acide citrique et d'hydrogénocarbonate de sodium.
- Dispositif selon l'une des revendications 6 et 7 , caractérisé en ce que ce mélange est sensiblement stoechiométrique.
- Dispositif selon l'une des revendications 5 à 8, caractérisé en ce que le matériau effervescent comprend un agent lubrifiant, par exemple du stéarate de magnésium.
- Dispositif selon l'une des revendications 5 à 9, caractérisé en ce que le matériau effervescent présente une coupe granulométrique inférieure à 100 µm.
- Dispositif selon l'une des revendications précédentes, caractérisé en ce que le matériau effervescent est tel que les bulles qu'il génère à 10-m de profondeur sont de dimensions comprises entre 30 et 50 µm.
- Dispositif selon l'une des revendications précédentes, caractérisé en ce qu'il comporte en outre des moyens formant lest, destinés à lui permettre de chuter plus vite.
- Procédé de leurrage de torpilles, caractérisé en ce qu'on disperse en mer, par voie aérienne, des dispositifs selon l'une des revendications précédentes.
- Procédé selon la revendication 13, caractérisé en ce que les dispositifs sont dispersés de part et d'autre de l'axe de l'axe du sillage (S) du navire, de façon à constituer des faux sillages (FS) qui se rattachent au sillage (S) du navire.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9712632A FR2769580B1 (fr) | 1997-10-09 | 1997-10-09 | Dispositif de leurrage a l'encontre des torpilles a remontee de sillage |
| FR9712632 | 1997-10-09 | ||
| PCT/FR1998/002141 WO1999019207A1 (fr) | 1997-10-09 | 1998-10-07 | Dispositif de leurrage a l'encontre des torpilles a remontee de sillage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0942865A1 EP0942865A1 (fr) | 1999-09-22 |
| EP0942865B1 true EP0942865B1 (fr) | 2002-01-02 |
Family
ID=9512036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98947619A Expired - Lifetime EP0942865B1 (fr) | 1997-10-09 | 1998-10-07 | Dispositif de leurrage a l'encontre des torpilles a remontee de sillage |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US6889590B2 (fr) |
| EP (1) | EP0942865B1 (fr) |
| JP (1) | JP2001505992A (fr) |
| AU (1) | AU9447198A (fr) |
| CA (1) | CA2274933C (fr) |
| DE (1) | DE69803358T2 (fr) |
| FR (1) | FR2769580B1 (fr) |
| WO (1) | WO1999019207A1 (fr) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101060153B1 (ko) * | 2008-09-19 | 2011-08-29 | 한국해양연구원 | 함정 피격성 향상을 위한 위협세력 기만선박 |
| DE102010035432A1 (de) * | 2010-08-26 | 2012-03-01 | Inficon Gmbh | Verfahren zur Dichtheitsprüfung |
| KR101142699B1 (ko) * | 2011-03-15 | 2015-04-20 | 한국해양과학기술원 | 선박 안전성 향상을 위하여 모듈형으로 레이더반사면적 신호와 적외선 신호를 생성하는 장치 및 이를 이용한 함정 피격성 향상을 위한 위협세력 기만 방법 |
| KR102149664B1 (ko) * | 2020-05-27 | 2020-09-01 | 국방과학연구소 | 코어-쉘 타입 미세기포 발생 물질 |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2637536A (en) * | 1947-10-30 | 1953-05-05 | Atomic Energy Commission | Method of dispersing materials in water |
| US3841219A (en) * | 1964-08-12 | 1974-10-15 | Gen Dynamics Corp | Decoy rounds for counter measures system |
| US3808940A (en) * | 1964-12-24 | 1974-05-07 | Gen Dynamics Corp | Portable decoy launcher system and rounds therefor |
| US4286498A (en) * | 1965-12-21 | 1981-09-01 | General Dynamics, Pomona Division | Decoy rounds and their method of fabrication |
| US3483132A (en) * | 1966-06-01 | 1969-12-09 | Gen Electric | Bubble dissolution control by film formation |
| US3506086A (en) * | 1968-10-16 | 1970-04-14 | Us Navy | Submarine target simulator |
| US3947566A (en) | 1970-08-03 | 1976-03-30 | Phoenix Research Inc. | Effervescent medicaments |
| US3947568A (en) | 1970-08-03 | 1976-03-30 | Phoenix Research Inc. | Effervescent cosmetic compositions |
| DK8603837A (fr) | 1985-08-13 | 1987-02-14 | ||
| US5211957A (en) | 1988-03-25 | 1993-05-18 | Ciba-Geigy Corporation | Solid rapidly disintegrating dosage form |
| FR2660907B1 (fr) | 1990-04-13 | 1995-07-21 | Thomson Csf | Procede de lutte contre les torpilles. |
| US5127945A (en) * | 1990-09-28 | 1992-07-07 | The United States Of America As Represented By The Secretary Of The Navy | Effervescent cationic film forming corrosion inhibitor material for use in torpedo launcher tubes |
| US5144587A (en) * | 1991-06-27 | 1992-09-01 | The United States Of America As Represented By The Secretary Of The Navy | Expendable moving echo radiator |
| DE4322837C2 (de) * | 1993-07-08 | 1996-02-22 | Buck Chem Tech Werke | Zeolithmaterial für ein Verfahren zum Erzeugen von Gasblasen in Wasser |
| US5721711A (en) * | 1996-04-01 | 1998-02-24 | Fine; Matthew J. | Apparatus and method for producing inverse bubbles |
-
1997
- 1997-10-09 FR FR9712632A patent/FR2769580B1/fr not_active Expired - Lifetime
-
1998
- 1998-10-07 EP EP98947619A patent/EP0942865B1/fr not_active Expired - Lifetime
- 1998-10-07 JP JP52115599A patent/JP2001505992A/ja not_active Ceased
- 1998-10-07 CA CA002274933A patent/CA2274933C/fr not_active Expired - Fee Related
- 1998-10-07 WO PCT/FR1998/002141 patent/WO1999019207A1/fr not_active Ceased
- 1998-10-07 AU AU94471/98A patent/AU9447198A/en not_active Abandoned
- 1998-10-07 DE DE69803358T patent/DE69803358T2/de not_active Expired - Lifetime
-
2001
- 2001-12-11 US US10/020,736 patent/US6889590B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| US6889590B2 (en) | 2005-05-10 |
| JP2001505992A (ja) | 2001-05-08 |
| DE69803358D1 (de) | 2002-02-28 |
| AU9447198A (en) | 1999-05-03 |
| WO1999019207A1 (fr) | 1999-04-22 |
| US20020185048A1 (en) | 2002-12-12 |
| FR2769580B1 (fr) | 1999-12-31 |
| CA2274933A1 (fr) | 1999-04-22 |
| CA2274933C (fr) | 2007-08-07 |
| EP0942865A1 (fr) | 1999-09-22 |
| FR2769580A1 (fr) | 1999-04-16 |
| DE69803358T2 (de) | 2002-08-29 |
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