EP0475834A1 - Magnetic minesweeping device - Google Patents
Magnetic minesweeping device Download PDFInfo
- Publication number
- EP0475834A1 EP0475834A1 EP91402405A EP91402405A EP0475834A1 EP 0475834 A1 EP0475834 A1 EP 0475834A1 EP 91402405 A EP91402405 A EP 91402405A EP 91402405 A EP91402405 A EP 91402405A EP 0475834 A1 EP0475834 A1 EP 0475834A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- magnetic
- dredging system
- vehicles
- vehicle
- induction coil
- 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.)
- Granted
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Classifications
-
- 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
- B63G7/00—Mine-sweeping; Vessels characterised thereby
- B63G7/02—Mine-sweeping means, Means for destroying mines
- B63G7/06—Mine-sweeping means, Means for destroying mines of electromagnetic type
Definitions
- the field of the invention is that of magnetic dredging systems which make it possible to destroy underwater mines, the triggering of which is activated by variations in the magnetic field due to a sinking ship.
- the invention relates to a magnetic dredging system comprising a dredger towing a device for simulating the magnetic field of a ship with determined characteristics.
- a magnetic dredging system is already known for which the extent of dredging (INTERCEPT) is preferred.
- the magnetic dredging system comprises a dredger towing by a rope a device for simulating the magnetic field of a ship of determined characteristics, the minesweeper being studied to bring a minimum of magnetic disturbances.
- the simulation device comprises several vehicles distributed in parallel in the direction of advance of the dredger over the extent of the dredging. Each vehicle includes a solenoid and a flat horizontal coil to simulate the passage of a ship. The simulation of the magnetic field of the ship is facilitated by the fact that the solenoid and the coil are supplied by variable currents.
- the object of the invention is to overcome this drawback and in particular an essential objective of the invention is to allow the simulation with very high precision of the magnetic field of most ships regardless of their dimensions and in particular their length.
- the magnetic dredging system is characterized in that the simulation device comprises a set of vehicles for each providing orthogonal magnetic fields, the vehicles being arranged in line in the direction of advance of the dredger and supplied separately by electric currents, the intensities of which are determined automatically by a control means essentially on the basis of parameters representative of the characteristics of the aforementioned ship to be simulated.
- a certain number of vehicles are deployed distributed along a line each simulating a portion of the magnetic field of the ship.
- the magnetic dredging system comprises two induction coils arranged orthogonally.
- the simulation device according to the invention takes into account not only the length of the ship but also its height.
- the magnetic dredging system comprises a minesweeping vessel 100 towing at the end of a rope 110 a set of magnetic vehicles 110 arranged in line in the direction of advancement of the dredging vessel .
- Magnetic vehicles are interconnected by cables with regular spacings between each of them.
- the number of magnetic vehicles 110 connected in series depends, as has been specified previously, on the ship whose magnetic field or magnetic signature is to be simulated, this magnetic signature being a function of the length, speed and height of water of the last.
- the length defined by the chain of magnetic vehicles is marked by buoyancy buoys 135 placed at the two ends of the chain of magnetic vehicles. The buoys 135 also make it possible to adjust the level of immersion of the magnetic vehicles 110.
- the length of the rope connecting all of the magnetic vehicles 110 to the dredging vessel 100 is approximately 200 meters in order to avoid any confusion between the residual magnetic field of the dredger and that of vehicles and to prevent the dredger from being hit by the explosion mines when they are triggered by magnetic vehicles.
- the magnetic vehicles 110 are supplied separately by electric currents, supplied by a power unit 126 supplied by a current supply 121 located on board the dredger 100, to each supply orthogonal magnetic fields.
- the control electronics 120 determine, for each magnetic vehicle 110 considered, the intensity of the electric current to be applied thereto from a calibration made beforehand taking into account the speed of use of the simulation device and the distance between the magnetic vehicles 110. Also shown in this figure is a winch system 122 connected to the power supply 121 making it possible to electrically adjust the length of the rope 130.
- a magnetic vehicle 110 comprises two induction coils 140, 150 arranged orthogonally supplied with current by the power unit 126 via the cord 130 and the cables.
- the first vertical induction coil 140 is placed inside a circular ferrule 145 whose axis, in the position of use of the simulation device, is substantially parallel to the direction of advance of the dredger ship 100.
- the circular ferrule 145 surrounds the second induction coil 150 whose shape is substantially rectangular.
- the second induction coil 150 is placed in a fairing 155 so as to provide the magnetic vehicle 110 with a relatively low coefficient of penetration into water, for example less than 0.3.
- the circular ferrule 145 is connected to the fairing 155 by radial fins and comprises a keel 160, disposed under the lower plane of the fairing 155, to stabilize the magnetic vehicle 110 by roll.
- the magnetic vehicle 110 has, during its use as shown in FIG. 1, zero buoyancy obtained by the balancing of balloons 170 arranged inside the fairing 155. Provision is advantageously made on each magnetic vehicle 110 for generating means. underwater pulses called "PINGER" 180 to easily locate it in case it detaches from the rope 130.
- the induction coils 140, 150 are formed from a wound conductor, for example an aluminum conductor and are placed in sealed containers filled with dielectric oil.
- a wound conductor for example an aluminum conductor and are placed in sealed containers filled with dielectric oil.
- the use of aluminum makes it possible to reduce the mass of the vehicle without appreciable reduction in the magnetic moment thereof.
- the electrical signals establishing the intensities of the currents to be passed through the induction coils 140, 150 of each magnetic vehicle 110 are automatically supplied by the control electronics 120.
- the control electronics 120 has in memory the values of the intensities for a certain number of ships whose magnetic signature is sought to simulate. These intensity values are obtained by varying all of these parameters until a good reproduction of the signature of the ship to be simulated is obtained by knowing the magnetic signature of each magnetic vehicle 110 and the magnetic signature of the ship considered.
- the operator of the magnetic dredging system provides via a data entry terminal connected to the control electronics 120 shown in FIG. 2: target parameters, dredging speed, water height.
- the target parameters are: its number from a given list, its speed, its magnetic state (demagnetized or non-demagnetized).
- control electronics 120 automatically supply the minimum number of vehicles necessary and deliver the electrical control signals to the power unit 126.
- each vehicle in a simulation device comprising six magnetic vehicles 110 25 meters apart, this example being non-limiting, are given below:
- Second induction coil 150
Abstract
Description
Le domaine de l'invention est celui des systèmes de dragage magnétique qui permettent de détruire les mines sous-marines dont le déclenchement est activé par les variations du champ magnétique dues à un navire à couler.The field of the invention is that of magnetic dredging systems which make it possible to destroy underwater mines, the triggering of which is activated by variations in the magnetic field due to a sinking ship.
Plus particulièrement l'invention concerne un système de dragage magnétique comportant un dragueur remorquant un dispositif de simulation du champ magnétique d'un navire de caractéristiques déterminées.More particularly, the invention relates to a magnetic dredging system comprising a dredger towing a device for simulating the magnetic field of a ship with determined characteristics.
L'efficacité d'un système de dragage magnétique est essentiellement liée à la complexité des mines sous-marines. Les mines sous-marines offensives sont généralement complexes du fait qu'elles sont mouillées en faible quantité et que leur petit nombre est compensé par leur grande efficacité. Ainsi, il existe des mines sous-marines capables de détecter la présence du dragage et de mettre la mise à feu en veille.The efficiency of a magnetic dredging system is essentially linked to the complexity of underwater mines. Offensive underwater mines are generally complex in that they are wet in small quantities and their small number is compensated by their high efficiency. Thus, there are underwater mines capable of detecting the presence of dredging and putting the ignition on standby.
Par conséquent, il est essentiel, pour combattre de telles mines sous-marines, que le champ magnétique du navire susceptible d'être coulé par celles-ci soit simulé avec la plus grande précision possible.Consequently, in order to combat such underwater mines, it is essential that the magnetic field of the ship liable to be sunk by them be simulated with the greatest possible accuracy.
On connaît déjà un système de dragage magnétique pour lequel l'étendue du dragage (INTERCEPT) est privilégiée. Le système de dragage magnétique comprend un dragueur remorquant par un filin un dispositif de simulation du champ magnétique d'un navire de caractéristiques déterminées, le dragueur de mines étant étudié pour apporter un minimum de perturbations magnétiques. Le dispositif de simulation comporte quant à lui, plusieurs véhicules répartis parallèlement dans la direction d'avancement du dragueur sur l'étendue du dragage. Chaque véhicule comprend un solénoïde et une bobine plate horizontale pour simuler le passage d'un navire. La simulation du champ magnétique du navire se trouve facilitée par le fait que le solénoïde et la bobine sont alimentés par des courants variables.A magnetic dredging system is already known for which the extent of dredging (INTERCEPT) is preferred. The magnetic dredging system comprises a dredger towing by a rope a device for simulating the magnetic field of a ship of determined characteristics, the minesweeper being studied to bring a minimum of magnetic disturbances. The simulation device comprises several vehicles distributed in parallel in the direction of advance of the dredger over the extent of the dredging. Each vehicle includes a solenoid and a flat horizontal coil to simulate the passage of a ship. The simulation of the magnetic field of the ship is facilitated by the fact that the solenoid and the coil are supplied by variable currents.
Toutefois, la longueur de chaque véhicule étant limitée, par exemple à environ 4 mètres, cette simulation reste très imparfaite dès que le navire dont on cherche à simuler le champ magnétique a une longueur nettement supérieure à celle du véhicule.However, the length of each vehicle being limited, for example to around 4 meters, this simulation remains very imperfect as soon as the ship whose magnetic field is sought to be simulated has a length significantly greater than that of the vehicle.
L'objet de l'invention est de pallier cet inconvénient et notamment un objectif essentiel de l'invention est de permettre la simulation avec une très grande précision du champ magnétique de la majeure partie des navires indépendamment de leurs dimensions et notamment de leur longueur.The object of the invention is to overcome this drawback and in particular an essential objective of the invention is to allow the simulation with very high precision of the magnetic field of most ships regardless of their dimensions and in particular their length.
Selon l'invention, le système de dragage magnétique est caractérisé en ce que le dispositif de simulation comprend un ensemble de véhicules pour fournir chacun des champs magnétiques orthogonaux, les véhicules étant disposés en ligne dans la direction d'avancement du dragueur et alimentés séparément par des courants électriques dont les intensités sont déterminées automatiquement par un moyen de commande essentiellement à partir de paramètres représentatifs des caractéristiques du navire précité à simuler.According to the invention, the magnetic dredging system is characterized in that the simulation device comprises a set of vehicles for each providing orthogonal magnetic fields, the vehicles being arranged in line in the direction of advance of the dredger and supplied separately by electric currents, the intensities of which are determined automatically by a control means essentially on the basis of parameters representative of the characteristics of the aforementioned ship to be simulated.
Ainsi, suivant les dimensions du navire et en particulier sa longueur, on déploie un certain nombre de véhicules répartis selon une ligne simulant chacun une portion du champ magnétique du navire.Thus, depending on the dimensions of the ship and in particular its length, a certain number of vehicles are deployed distributed along a line each simulating a portion of the magnetic field of the ship.
Selon une autre caractéristique de l'invention, le système de dragage magnétique comporte deux bobines d'induction disposées orthogonalement.According to another characteristic of the invention, the magnetic dredging system comprises two induction coils arranged orthogonally.
De cette manière, le dispositif de simulation selon l'invention prend en compte non seulement la longueur du navire mais aussi sa hauteur.In this way, the simulation device according to the invention takes into account not only the length of the ship but also its height.
D'autres caractéristiques et avantages de l'invention apparaîtront encore mieux à la lecture de la description qui va suivre accompagnée des dessins annexés dans lesquels :
- la figure 1 représente de façon schématique le système de dragage magnétique selon l'invention,
- la figure 2 représente de façon schématique plus particulièrement le dispositif électronique de commande et d'alimentation en courant des véhicules du dispositif de simulation selon l'invention.
- la figure 3 est une représentation en détail d'un véhicule du dispositif de simulation d'un champ magnétique d'un navire selon l'invention.
- FIG. 1 schematically represents the magnetic dredging system according to the invention,
- FIG. 2 schematically represents more particularly the electronic device for controlling and supplying current to vehicles of the simulation device according to the invention.
- FIG. 3 is a detailed representation of a vehicle of the device for simulating a magnetic field of a ship according to the invention.
En se reportant à la figure 1, le système de dragage magnétique selon l'invention comporte un navire dragueur de mines 100 remorquant au bout d'un filin 110 un ensemble de véhicules 110 magnétiques disposés en ligne dans la direction d'avancement du navire dragueur. Les véhicules magnétiques sont reliés entre eux par des câbles avec des espacements réguliers entre chacun d'eux. Le nombre de véhicules magnétiques 110 reliés en série dépend, comme cela a été précisé précédemment, du navire dont on veut simuler le champ magnétique ou signature magnétique, cette signature magnétique étant fonction de la longueur, de la vitesse et de la hauteur d'eau de ce dernier. Comme représenté sur cette figure, la longueur définie par la chaîne des véhicules magnétiques est repérée par des bouées de flottaison 135 disposées aux deux extrémités de la chaîne des véhicules magnétiques. Les bouées de flottaison 135 permettent par ailleurs de régler le niveau d'immersion des véhicules magnétiques 110. Dans l'exemple représenté sur cette figure, la longueur du filin reliant l'ensemble des véhicules magnétiques 110 au navire dragueur 100 est d'environ 200 mètres afin d'éviter toute confusion entre le champ magnétique résiduel du dragueur et celui des véhicules et d'empêcher le dragueur d'être atteint par l'explosion des mines lorsqu'elles se déclenchent sous l'action des véhicules magnétiques.Referring to FIG. 1, the magnetic dredging system according to the invention comprises a
En se reportant maintenant à la figure 2, les véhicules magnétiques 110 sont alimentés séparément par des courants électriques, fournis par une unité de puissance 126 alimentée par une alimentation en courant 121 situées à bord du dragueur 100, pour fournir chacun des champs magnétiques orthogonaux. L'électronique de commande 120 détermine, pour chaque véhicule magnétique 110 considéré, l'intensité du courant électrique à appliquer à celui-ci à partir d'un étalonnage fait préalablement en tenant compte de la vitesse d'utilisation du dispositif de simulation et de la distance entre les véhicules magnétiques 110. On a représenté aussi sur cette figure un système de treuil 122 relié à l'alimentation en courant 121 permettant de régler électriquement la longueur du filin 130.Referring now to FIG. 2, the
En se reportant maintenant à la figure 3, un véhicule magnétique 110 comporte deux bobines d'induction 140, 150 disposées orthogonalement alimentées en courant par l'unité de puissance 126 par l'intermédiaire du filin 130 et des câbles. La première bobine d'induction 140 verticale est placée à l'intérieur d'une virole circulaire 145 dont l'axe, en position d'utilisation du dispositif de simulation, est sensiblement parallèle à la direction d'avancement du navire dragueur 100. La virole circulaire 145 entoure la seconde bobine d'induction 150 dont la forme est sensiblement rectangulaire. La seconde bobine d'induction 150 est placée dans un carénage 155 de manière à fournir au véhicule magnétique 110 un coefficient de pénétration dans l'eau relativement faible, par exemple inférieur à 0,3. Comme visible sur cette figure, la virole circulaire 145 est reliée au carénage 155 par des ailettes radiales et comporte une quille 160, disposée sous le plan inférieur du carénage 155, pour stabiliser le véhicule magnétique 110 en roulis. Le véhicule magnétique 110 a, pendant son utilisation comme représenté en figure 1, une flottabilité nulle obtenue par l'équilibrage de ballons 170 disposés à l'intérieur du carénage 155. On prévoit avantageusement, sur chaque véhicule magnétique 110, un moyen générateur d'impulsions sous-marines dit "PINGER" 180 pour localiser facilement celui-ci au cas où il se détacherait du filin 130.Referring now to FIG. 3, a
De façon préférentielle, les bobines d'induction 140, 150 sont formées à partir d'un conducteur enroulé, par exemple un conducteur en aluminium et sont placées dans des conteneurs étanches remplis d'huile diélectrique. L'utilisation de l'aluminium permet de réduire la masse du véhicule sans diminution sensible du moment magnétique de celui-ci.Preferably, the
Nous allons maintenant décrire en détail le fonctionnement du dispositif de simulation du champ magnétique d'un navire selon la présente invention. Les signaux électriques établissant les intensités des courants à faire passer dans les bobines d'induction 140, 150 de chaque véhicule magnétique 110 (ces intensités de courant étant variables par véhicule) sont automatiquement fournis par l'électronique de commande 120. Pour ce faire, l'électronique de commande 120 comporte en mémoire les valeurs des intensités pour un certain nombre de navires dont on cherche à simuler la signature magnétique. Ces valeurs des intensités sont obtenues en faisant varier l'ensemble de ces paramètres jusqu'à obtenir une bonne reproduction de la signature du navire à simuler en connaissant la signature magnétique de chaque véhicule magnétique 110 et la signature magnétique du navire considéré.We will now describe in detail the operation of the device for simulating the magnetic field of a ship according to the present invention. The electrical signals establishing the intensities of the currents to be passed through the
L'opérateur du système de dragage magnétique selon l'invention fournit par l'intermédiaire d'un terminal de saisie de données relié à l'électronique de commande 120 représenté sur la figure 2 : les paramètres de la cible, la vitesse de dragage, la hauteur d'eau.The operator of the magnetic dredging system according to the invention provides via a data entry terminal connected to the
Les paramètres de la cible sont : son numéro parmi une liste donnée, sa vitesse, son état magnétique (démagnétisé ou non démagnétisé).The target parameters are: its number from a given list, its speed, its magnetic state (demagnetized or non-demagnetized).
En réponse à ces différents paramètres, l'électronique de commande 120 fournit automatiquement le nombre minimum de véhicules nécessaires et délivre les signaux électriques de commande à l'unité de puissance 126.In response to these various parameters, the
A titre d'exemple, les caractéristiques magnétiques de chaque véhicule dans un dispositif de simulation comportant six véhicules magnétiques 110 distants de 25 mètres, cet exemple étant non limitatif, sont données ci-dessous :By way of example, the magnetic characteristics of each vehicle in a simulation device comprising six
- diamètre 1,8 m,diameter 1.8 m,
- largeur 0,5 m,width 0.5 m,
- épaisseur <= 0,075 m.thickness <= 0.075 m.
- nombre de spires du conducteur enroulé : 5250number of turns of the coiled conductor: 5250
- section du conducteur : 4 mm²conductor cross section: 4 mm²
- tension de pointe : 7,5 Apeak voltage: 7.5 A
- moment magnétique : 100.000 A.m²magnetic moment: 100,000 A.m²
- puissance maximum : 15 kWattsmaximum power: 15 kWatts
- longueur : 2,7 mlength: 2.7 m
- largeur : 1,2 mwidth: 1.2 m
- hauteur : 0,21 mheight: 0.21 m
- nombre de spires du conducteur enroulé : 4370number of turns of the coiled conductor: 4370
- section du conducteur : 4 mm²conductor cross section: 4 mm²
- tension de pointe : 7,5 Apeak voltage: 7.5 A
- moment magnétique : 100.000 A.m²magnetic moment: 100,000 A.m²
- puissance maximum : 15 kWatts.maximum power: 15 kWatts.
Claims (9)
la première (140) bobine d'induction a un diamètre de 1.8m, une largeur de 0.5m et une épaisseur inférieure ou égale à 0.075m;
la seconde (150) bobine d'induction a une longueur de 2.7m, une largeur de 1.2m et une épaisseur de 0.21 m;
les deux bobines d'induction sont formées à partir d'un conducteur enroulé dont la section est de 4 mm² et présentent chacune un moment magnétique sensiblement égal à 100000 A.m ;The magnetic dredging system of claim 3, wherein
the first (140) induction coil has a diameter of 1.8m, a width of 0.5m and a thickness less than or equal to 0.075m;
the second (150) induction coil has a length of 2.7m, a width of 1.2m and a thickness of 0.21m;
the two induction coils are formed from a wound conductor whose section is 4 mm² and each have a magnetic moment substantially equal to 100,000 Am;
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9011203A FR2666559B1 (en) | 1990-09-11 | 1990-09-11 | MAGNETIC DREDGING SYSTEM. |
| FR9011203 | 1990-09-11 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0475834A1 true EP0475834A1 (en) | 1992-03-18 |
| EP0475834B1 EP0475834B1 (en) | 1994-12-21 |
Family
ID=9400220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19910402405 Expired - Lifetime EP0475834B1 (en) | 1990-09-11 | 1991-09-10 | Magnetic minesweeping device |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0475834B1 (en) |
| JP (1) | JPH0624381A (en) |
| DE (1) | DE69106090T2 (en) |
| FR (1) | FR2666559B1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7658149B2 (en) | 2002-12-18 | 2010-02-09 | Commonwealth Of Australia | Minesweeping device |
| WO2014060185A1 (en) * | 2012-10-18 | 2014-04-24 | Thales | Device for winding and unwinding a cable around a drum |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07297735A (en) * | 1994-04-27 | 1995-11-10 | Pioneer Electron Corp | Multiplex broadcasting reception method and receiver |
| JPH09172705A (en) | 1995-12-15 | 1997-06-30 | Denso Corp | Driver for vehicle |
| JP5597421B2 (en) * | 2010-03-23 | 2014-10-01 | 東芝三菱電機産業システム株式会社 | Magnetic control apparatus and method |
| GB2550376B (en) * | 2016-05-17 | 2018-07-11 | Thales Holdings Uk Plc | Magnetic phase transition exploitation for enhancement of electromagnets |
| DE102018217211A1 (en) * | 2018-10-09 | 2020-04-09 | Siemens Aktiengesellschaft | Drone for triggering sea mines with an electric drive |
| DE102019212105A1 (en) * | 2019-08-13 | 2021-02-18 | Siemens Aktiengesellschaft | Operating procedures for a mine clearance system and a mine clearance system for triggering sea mines |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3266833A (en) * | 1960-11-30 | 1966-08-16 | Harold J Mack | Release mechanism |
| WO1985000335A1 (en) * | 1983-07-04 | 1985-01-31 | The Secretary Of State For Defence In Her Britanni | Improvements in or relating to magnetic assemblies |
| EP0338901A1 (en) * | 1988-04-19 | 1989-10-25 | Thomson-Csf | Magnetic minesweeping system |
| US4917946A (en) * | 1987-02-27 | 1990-04-17 | Her Majesty the Queen as represented by the Minister of National Defence in Her Majesty's Canadian Governmenmt | Low magnetic signature products and method |
| EP0364126A1 (en) * | 1988-10-13 | 1990-04-18 | The Marconi Company Limited | Magnetic signature simulation apparatus |
| EP0366522A1 (en) * | 1988-10-24 | 1990-05-02 | Thomson-Csf | Magnetic mine-sweeping system |
-
1990
- 1990-09-11 FR FR9011203A patent/FR2666559B1/en not_active Expired - Fee Related
-
1991
- 1991-09-10 DE DE1991606090 patent/DE69106090T2/en not_active Expired - Fee Related
- 1991-09-10 EP EP19910402405 patent/EP0475834B1/en not_active Expired - Lifetime
- 1991-09-11 JP JP25958391A patent/JPH0624381A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3266833A (en) * | 1960-11-30 | 1966-08-16 | Harold J Mack | Release mechanism |
| WO1985000335A1 (en) * | 1983-07-04 | 1985-01-31 | The Secretary Of State For Defence In Her Britanni | Improvements in or relating to magnetic assemblies |
| US4917946A (en) * | 1987-02-27 | 1990-04-17 | Her Majesty the Queen as represented by the Minister of National Defence in Her Majesty's Canadian Governmenmt | Low magnetic signature products and method |
| EP0338901A1 (en) * | 1988-04-19 | 1989-10-25 | Thomson-Csf | Magnetic minesweeping system |
| EP0364126A1 (en) * | 1988-10-13 | 1990-04-18 | The Marconi Company Limited | Magnetic signature simulation apparatus |
| EP0366522A1 (en) * | 1988-10-24 | 1990-05-02 | Thomson-Csf | Magnetic mine-sweeping system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7658149B2 (en) | 2002-12-18 | 2010-02-09 | Commonwealth Of Australia | Minesweeping device |
| US8006620B2 (en) | 2002-12-18 | 2011-08-30 | The Commonwealth Of Australia | Minesweeping device |
| WO2014060185A1 (en) * | 2012-10-18 | 2014-04-24 | Thales | Device for winding and unwinding a cable around a drum |
| FR2997063A1 (en) * | 2012-10-18 | 2014-04-25 | Thales Sa | DEVICE FOR WINDING AND DEROUTING A CABLE AROUND A DRUM |
| US10023280B2 (en) | 2012-10-18 | 2018-07-17 | Thales | Device for winding and unwinding a cable around a drum |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0624381A (en) | 1994-02-01 |
| FR2666559B1 (en) | 1995-07-21 |
| FR2666559A1 (en) | 1992-03-13 |
| EP0475834B1 (en) | 1994-12-21 |
| DE69106090T2 (en) | 1995-05-04 |
| DE69106090D1 (en) | 1995-02-02 |
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