EP0289692A1 - Minenräumvorrichtung - Google Patents

Minenräumvorrichtung Download PDF

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Publication number
EP0289692A1
EP0289692A1 EP87870060A EP87870060A EP0289692A1 EP 0289692 A1 EP0289692 A1 EP 0289692A1 EP 87870060 A EP87870060 A EP 87870060A EP 87870060 A EP87870060 A EP 87870060A EP 0289692 A1 EP0289692 A1 EP 0289692A1
Authority
EP
European Patent Office
Prior art keywords
magnetic
acoustic
turns
cable
dredging device
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Withdrawn
Application number
EP87870060A
Other languages
English (en)
French (fr)
Inventor
Philippe Gillain
Auguste Cuvelier
Louis Boutriau
Alain Debroux
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Umicore NV SA
Original Assignee
ACEC SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ACEC SA filed Critical ACEC SA
Priority to EP87870060A priority Critical patent/EP0289692A1/de
Priority to AU15380/88A priority patent/AU1538088A/en
Priority to NO881929A priority patent/NO881929L/no
Publication of EP0289692A1 publication Critical patent/EP0289692A1/de
Withdrawn legal-status Critical Current

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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 present invention relates to a dredging device which makes it possible to simulate the passage of a ship by generation of magnetic and / or acoustic signals, with a view to detonating marine mines with influence deposited by an enemy.
  • a dredging device which consists of a cable formed in a loop and towed by a ship. Said cable is traversed by a direct or pulsed current which thus generates a magnetic field intended to trigger the detonation of the submerged mine.
  • An acoustic generator towed by said vessel can also be associated with this magnetic dredging device. This set is difficult to handle and does not allow the geographic concentration of magnetic and acoustic effects to be achieved.
  • these known systems characterized by a vertical magnetic moment generate magnetic fields of which the horizontal component is insufficient, more particularly at shallow depth. Consequently, these systems no longer meet the current requirements of the navies due to a lack of sufficiently representative simulation of real ships.
  • a dredging device which consists of a self-propelled and remote-controlled boat comprising a solenoid of horizontal axis with a length of about 15 m and a diameter of about 4 m, made using a steel tube around which are looped cable loops traversed by a direct current of low intensity. This is intended to magnetize the iron in order to generate a magnetic field.
  • this other known system being characterized by a horizontal magnetic moment, generates magnetic fields of which the vertical component is insufficient, more particularly at shallow depth.
  • this device allows the production of a single magnetic field configuration corresponding to a single magnetic signature of a ship, while certain mines are set to explode upon detection of a precise magnetic signature. In other words, this known system only allows the simulation of ships having a certain type of magnetic signature and moving at a speed identical to that of the dredging system.
  • the magnetic field produced having a small amplitude, the dredging distance is quite short.
  • dredgers are also known using permanent magnets, possibly with variable magnetic moment, which are towed by a boat intended for this purpose.
  • the object of the present invention is to provide a dredging device which does not have the drawbacks of the devices known in the prior art and which has superior performance relative to the simulation of ships.
  • Another object consists in providing a magnetic dredging device which makes it possible to produce variable magnetic fields in order to obtain different configurations of magnetic fields and thus to simulate different types of magnetic signatures of ships and different speeds of passage thereof.
  • Another object of the present invention is to provide a dredging device which generates magnetic fields having a good balance between the horizontal component and the vertical component, at all times. depths.
  • Another aim is to allow the geographic concentration of magnetic and acoustic effects by the combination of an acoustic dredging device and a magnetic dredging device.
  • Another object of the invention is to obtain an easy handling device, usable in any sea state and achievable in several variant embodiments.
  • the dredging device essentially consists of a mandrel made of non-magnetic material on which are wound several turns of cable traversed by a constant of high intensity.
  • this system is self-floating thanks to the use, for the constitution of the mandrel, of composite materials such as, for example, layers of glass fibers, impregnated with polyester resin and covering a foam structure. low density.
  • This mandrel has a great stiffness and is practically non-deformable.
  • the high intensity current flowing through the turns of the cable consists of a pulsed current.
  • a pulsed current it is possible to generate magnetic fields having the desired configuration and therefore simulate a desired type of magnetic signature of a ship.
  • Another advantage is that it is thus possible to simulate a speed of passage of a ship, independently of the speed of passage of the dredge over the mine.
  • the axis of the cable turns is advantageously inclined relative to the horizontal, preferably by an angle of around 50 °. It also follows that the horizontal and vertical components of the magnetic field are more constant as a function of the depth.
  • the turns are wound in an inclined manner on an essentially horizontal mandrel which preferably has a section which generally affects an elliptical shape.
  • This arrangement makes it possible to house the mandrel horizontally, the turns being wound in an inclined manner, while preserving the optimal circular section of the turns in the plane of these turns perpendicular to the direction of the magnetic moment.
  • the mandrel is made of a non-magnetic composite material and offers many advantages.
  • the first advantage of the mandrel made of non-magnetic material is that it allows the current to be pulsed through the turns of the cable.
  • the present invention is therefore particularly suitable for simulating any type of boat and different speeds of passage of a boat, independently of the towing or self-propelling speed.
  • a second advantage is that of being self-floating and being able to be launched as is to be either towed or self-propelled.
  • a final advantage consists in being able to use, in an alternative embodiment, the self-floating mandrel as the central part of a hull to which it suffices to add a stern and a bow, also made of non-magnetic material to obtain a conventional craft.
  • the magnetic dredging device described above may include a generator of acoustic noises of the hydraulic or electro-dynamic type, possibly combined with a piezoelectric generator, in order to cover the wide range of frequencies generated by real ships.
  • the system acoustic dredging is automatically launched and automatically recovered from the magnetic dredging system.
  • Figure 1 shows a magnetic dredging device 1 according to the present invention which is towed by a ship 3 known per se and suitable for this purpose.
  • an acoustic dredging device 5 is towed by said magnetic dredging device.
  • the magnetic dredging device 1 can be equipped with a propulsion system which may be remotely controlled.
  • said dredging device consists of a hollow cylindrical mandrel 11 made of a non-magnetic material, such as, for example, layers 8 and 9 of glass fibers impregnated with polyester resin covering a structure 10 of low density.
  • Coils 13 are wound around the mandrel 11 in an inclined manner, so that their axis is inclined relative to the horizontal, preferably at an angle of the order of 50 °. These turns 13 are traversed by a pulsed or continuous current of high intensity and thus generate a magnetic moment inclined relative to the horizontal.
  • the mandrel is arranged essentially horizontally and has a section affecting the shape of an ellipse.
  • the dimensions of the ellipse are chosen from in such a way that the surface of an inclined turn is essentially circular in order to produce, for a given current, a maximum magnetic moment.
  • the dredging device according to the invention is at least partially submerged as can be seen in FIG. 2 on which the sea level is represented 15.
  • the various propulsion and control members are provided.
  • a control member such as a rudder for example.
  • the dredging device according to the present invention can also be combined with a conventional acoustic dredging device 5.
  • This can include a hydraulic or electrodynamic noise generator possibly associated with a piezoelectric generator in order to cover the wide range of frequencies generated by the actual ships.
  • the towing cable 7 is arranged so as to be able to transmit the control orders of the control members if there are any, such as a rudder or the control members of the launching of the acoustic dredging device or other auxiliaries, as well as the power supply of the magnetic dredging device and of the acoustic dredging device.
  • the dredging device according to the present invention is particularly easy to handle and can be used in any sea state. Furthermore, it has great rigidity and is not very sensitive to shocks due to the explosion of mines. Considering the incline born of the turns, this device generates magnetic fields with a good balance between the horizontal and vertical components at all depths, which allows a good simulation of ships. In addition, the magnetic field produced remains essentially constant as a function of the depth. Thanks to the use of pulsed currents, there is great flexibility in the simulation of different magnetic signatures of boats and various speeds of passage.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Earth Drilling (AREA)
EP87870060A 1987-05-04 1987-05-04 Minenräumvorrichtung Withdrawn EP0289692A1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP87870060A EP0289692A1 (de) 1987-05-04 1987-05-04 Minenräumvorrichtung
AU15380/88A AU1538088A (en) 1987-05-04 1988-05-02 Magnetic towed device
NO881929A NO881929L (no) 1987-05-04 1988-05-03 Sveiper, saerlig for influensminer.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP87870060A EP0289692A1 (de) 1987-05-04 1987-05-04 Minenräumvorrichtung

Publications (1)

Publication Number Publication Date
EP0289692A1 true EP0289692A1 (de) 1988-11-09

Family

ID=8198500

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87870060A Withdrawn EP0289692A1 (de) 1987-05-04 1987-05-04 Minenräumvorrichtung

Country Status (3)

Country Link
EP (1) EP0289692A1 (de)
AU (1) AU1538088A (de)
NO (1) NO881929L (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5361675A (en) * 1992-06-18 1994-11-08 Israel Aircraft Industries Ltd Magnetic mine detonation apparatus
WO2017148642A1 (de) * 2016-03-01 2017-09-08 Siemens Aktiengesellschaft Drohne zur auslösung von seeminen

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983003849A1 (en) * 1982-04-28 1983-11-10 Gould Inc. Method and means for generating electrical and magnetic fields in salt water environments

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983003849A1 (en) * 1982-04-28 1983-11-10 Gould Inc. Method and means for generating electrical and magnetic fields in salt water environments

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5361675A (en) * 1992-06-18 1994-11-08 Israel Aircraft Industries Ltd Magnetic mine detonation apparatus
WO2017148642A1 (de) * 2016-03-01 2017-09-08 Siemens Aktiengesellschaft Drohne zur auslösung von seeminen
US10978932B2 (en) 2016-03-01 2021-04-13 Siemens Aktiengesellschaft Drone for triggering sea mines

Also Published As

Publication number Publication date
NO881929L (no) 1988-11-07
AU1538088A (en) 1988-11-10
NO881929D0 (no) 1988-05-03

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Inventor name: GILLAIN, PHILIPPE

Inventor name: DEBROUX, ALAIN

Inventor name: BOUTRIAU, LOUIS

Inventor name: CUVELIER, AUGUSTE