EP0237891B1 - Einrichtung zum Stören und Täuschen von Wasserschall-Ortungsanlagen - Google Patents

Einrichtung zum Stören und Täuschen von Wasserschall-Ortungsanlagen Download PDF

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Publication number
EP0237891B1
EP0237891B1 EP87103269A EP87103269A EP0237891B1 EP 0237891 B1 EP0237891 B1 EP 0237891B1 EP 87103269 A EP87103269 A EP 87103269A EP 87103269 A EP87103269 A EP 87103269A EP 0237891 B1 EP0237891 B1 EP 0237891B1
Authority
EP
European Patent Office
Prior art keywords
charges
mechanism according
water
sound
carrying body
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
Application number
EP87103269A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0237891A2 (de
EP0237891A3 (en
Inventor
Georg Bugiel
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.)
Diehl Verwaltungs Stiftung
Original Assignee
Diehl GmbH and Co
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 Diehl GmbH and Co filed Critical Diehl GmbH and Co
Publication of EP0237891A2 publication Critical patent/EP0237891A2/de
Publication of EP0237891A3 publication Critical patent/EP0237891A3/de
Application granted granted Critical
Publication of EP0237891B1 publication Critical patent/EP0237891B1/de
Expired legal-status Critical Current

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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
    • F41H3/00—Camouflage, i.e. means or methods for concealment or disguise
    • 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
    • B63G8/00—Underwater vessels, e.g. submarines; Equipment specially adapted therefor
    • B63G8/28—Arrangement of offensive or defensive equipment
    • B63G8/34—Camouflage

Definitions

  • the invention relates to a device according to the preamble of claim 1.
  • towed bodies which are submerged as interference and decoy bodies and which, by means of electromechanical excitation (beating against a hollow body wall) or as electrically controlled water sounder, serve to emit noise into the water in order to deflect from an object to be protected; or to release compressed air into the water in a bubble shape in order to simulate a reflective target object due to the sound-reflecting effect of a slowly floating bubble accumulation.
  • the invention is based on the knowledge that the previously known devices of the generic type are only of limited effectiveness, because in particular only a relatively narrow-band and less voluminous sound spectrum can be emitted without considerable technical effort and a mere bubble accumulation as such is relatively easy to identify, especially since they are right quickly evaporated.
  • the object of the invention is to provide a both passive and active interference device with comparatively little technological effort.
  • this object is essentially achieved in that the generic device has the characterizing feature of claim 1.
  • a corresponding staggering of these chains relative to each other and the charges along the chains leads to the formation of virtual sound sources with intensities due to local pressure wave superimpositions in the surrounding water with intensities that can be significantly higher than those at the locations of the individual charges and thus the active interference effect, i.e. the acoustic pollution of the surrounding water against the effect of a waterborne direction finder, significantly increase.
  • reaction gases can also serve as propulsion means for a drive device so that the pyroacoustic interfering body can self-control or remotely control certain distances and not only acoustically contaminate a larger spatial area, but can even more realistically simulate a target object.
  • Conventional propellants can serve as energy suppliers for the release of high-energy, expanding and collapsing gas bubbles into the water and for the function of the drive device; or a very gas-rich, high-performance lithergol fuel system with sodium or potassium boranate and acid as a supplier of very large amounts of high-energy, i.e. strongly expanding reaction gases - as explained in more detail in our own, previously unpublished applications P 34 35 075.6 and P 34 35 076.4 dated September 25, 1984 .
  • the function of the device according to the invention for disturbing and deceiving waterborne sound Location systems are essentially based on radiating pyrotechnic energy into water 1 as sound wave energy.
  • an air or watercraft exposes pyroacoustic interfering bodies 2, which essentially consist of a supporting body 3 for pyrotechnic charges 4 (designed, for example, as a towed body or for buoyancy, floating state or slow sinking in water 1).
  • pyroacoustic interfering bodies 2 which essentially consist of a supporting body 3 for pyrotechnic charges 4 (designed, for example, as a towed body or for buoyancy, floating state or slow sinking in water 1).
  • these can be distributed discretely along detonating cords 5, or, according to FIG. 3, can be designed as a compact or lamellar or granular pressed body.
  • the fuses 5 can be ignited before the interfering bodies 2 are exposed; or the support body 3 are equipped with ignitors 6, which, for example, after a delay time and z. B. initiated by touching the sea water 1, the ignition of the fuses 5, and then one after the other the explosive burning of the individual charges 4, initiate.
  • the pyrotechnic charges 4 are suspended freely from the supporting body 3 in the water 1 along detonating cords 5.
  • the reaction gas bubbles 7 of the individual successively ignited charges 4 expand in a pulsing manner into the surrounding water 1 until the reaction pressure of the displaced water leads to the collapse of the respective gas bubble 7 in the absence of combustion gas, and thereby call local compression waves, i.e. a very high-harmonic sound radiation into the water 1 forth.
  • the expansion gas bubbles 7 act as a dynamic bubble curtain, that is to say as a spatially fluctuating reflector for incident water sound waves, which are emitted by location systems, for example.
  • the superposition of the pressure wave fronts of the individual expanding gas bubbles 7 also results in a number of virtual sound sources in the areas apart from the individual charges 4.
  • the use of the interfering bodies 2 thus leads to a broadband active and passive acoustic contamination of the sound transmission medium water 1, so that the closer surroundings of such an interfering body 2 act on the one hand as a false target for waterborne sound locating systems and on the other hand can hardly be penetrated for the detection of objects hidden behind them.
  • this disturbing body 2 also fakes the presence of a rapid vehicle for a remote location system, although it is merely a quasi-stationary floating or sinking body for the longer-lasting build-up of a quasi-stationary disturbing and deceptive field acts.
  • perturbation elements 2 may also be equipped with a self-propelled to a spatially fanned from the release site forth, so more expansive Stör capable to span, for shielding operations that are taking place behind it.
  • a modified interference body 2 which is also driven by the supplier for the pulsating bubbles 7, is outlined in FIG. 3.
  • the reaction gases of a compact propellant charge are first collected in at least one pressure chamber 13, from which they then, portioned through a pressure relief valve 20, pass into the actual oscillating housing 9 in pulsed fashion via a pulse tube 14.
  • This has the advantage of being able to implement structure-borne noise frequency tuning more easily.
  • it is then also easier to use the pyrotechnic charge 4 at the same time as a fuel for a drive device 15; which, as sketched, can be an exhaust gas recoil system or, more advantageously, the fluid piston water jet drive system explained in more detail in the own, not prepublished, older patent application P 34 35 076.4 dated September 25, 1984.
  • the charge 4 also serves to excite a coordinated sound pressure generator 16, which in the example shown is structurally combined with the drive device 15. It consists of a number of shock wave tubes 14, which are tuned to different basic frequencies due to their length and their diameter between the surrounding water 1 and a periodically opened pressure chamber 13 for the reaction gases of the fuel charge 4.
  • the defined time pressure profiles 17 at the outlet of the shock wave tubes 14 differ from one another in particular by their rising and falling edges, that is to say by very different harmonic contents; as illustrated in FIG. 3 in the direction parallel to the axis 18 of the disturbing body 2 over a radially extending time axis.
  • the small pulsating gas bubbles 7 emerging through the shock wave tubes 14 and the larger drive gas quantities likewise emerging from the drive device 15, which are also compressed and pulsed, combine again in the far field (in the water 1) to form a bubble curtain 12.
  • the pyroacoustic, self-running interference body 2 according to FIG. 3 therefore emits sound waves 19 in different spectral ranges. These can be varied within wide limits by means of constructive measures, since it is a superimposition of low-frequency structure-borne noise effects with high-frequency cavitation effects and the frequency mixture of periodic-pulse-like effects of slow expansion and rapid collapse of a large number of gas bubbles, supplemented by the frequency-staggered effects of vibration excitation of shock wave tubes 14.
  • the simple mechanical structure enables the provision of large quantities of relatively small, thus easily manageable pyroacoustic interference and decoys 2 as inexpensive consumables on board also of merchant ships, in order to quickly counteract an impending threat that can be identified by opposing waterborne sound location systems to be able to prepare behind which evasive or defensive maneuvers.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Pipe Accessories (AREA)
  • Emergency Lowering Means (AREA)
  • Navigation (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
EP87103269A 1986-03-15 1987-03-07 Einrichtung zum Stören und Täuschen von Wasserschall-Ortungsanlagen Expired EP0237891B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863608809 DE3608809A1 (de) 1986-03-15 1986-03-15 Einrichtung zum stoeren und taeuschen von wasserschall-ortungsanlagen
DE3608809 1986-03-15

Publications (3)

Publication Number Publication Date
EP0237891A2 EP0237891A2 (de) 1987-09-23
EP0237891A3 EP0237891A3 (en) 1987-11-19
EP0237891B1 true EP0237891B1 (de) 1989-06-14

Family

ID=6296525

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87103269A Expired EP0237891B1 (de) 1986-03-15 1987-03-07 Einrichtung zum Stören und Täuschen von Wasserschall-Ortungsanlagen

Country Status (5)

Country Link
EP (1) EP0237891B1 (no)
DE (2) DE3608809A1 (no)
DK (1) DK131987A (no)
IL (1) IL81867A (no)
NO (1) NO165064C (no)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3908577A1 (de) * 1989-03-16 1990-09-20 Laukien Guenther Verfahren und vorrichtung zur verminderung der schallemission getauchter unterseeboote
DE4322837A1 (de) * 1993-07-08 1995-04-06 Buck Chem Tech Werke Verfahren zum Erzeugen von Gasblasen in Wasser sowie Zeolithpartikel zu dessen Durchführung

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3908572A1 (de) * 1989-03-16 1990-12-20 Laukien Guenther Verfahren und vorrichtung zur verminderung der schallemission getauchter unterseeboote
DE3908578A1 (de) * 1989-03-16 1990-09-20 Laukien Guenther Verfahren zum beeinflussen einer schallquelle, insbesondere eines getauchten unterseebootes und unterseeboot
GB2369178B (en) * 1990-05-11 2002-09-18 Marconi Co Ltd Acoustic jamming
FR2771805B1 (fr) * 1997-12-02 2000-02-18 Lacroix Soc E Generateur pyroacoustique pour la protection de sous-marins et de batiments de surface
RU2456681C1 (ru) * 2011-04-13 2012-07-20 Федеральное государственное унитарное предприятие Тихоокеанский научно-исследовательский рыбохозяйственный центр ФГУП "ТИНРО-Центр" Способ снижения подводного шума судов и устройство для его осуществления
DE102015010659B4 (de) * 2015-08-14 2017-11-02 Bundesrepublik Deutschland, vertreten durch das Bundesministerium der Verteidigung, vertreten durch das Bundesamt für Ausrüstung, Informationstechnik und Nutzung der Bundeswehr Unterwasser-Täuschkörper
JP6887851B2 (ja) * 2017-03-31 2021-06-16 三菱重工業株式会社 雑音制御装置、船舶、雑音制御方法及びプログラム

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE315238C (no) *
FR497335A (fr) * 1919-03-20 1919-12-03 Emile Henri Rieter Dispositif de protection des navires contre les torpilles et les mines
US2395944A (en) * 1942-03-16 1946-03-05 Peter P Smith System for the protection of vessels against attack of torpedoes
US2968274A (en) * 1944-04-28 1961-01-17 Nelson N Estes Anti-torpedo system
US3316840A (en) * 1944-04-28 1967-05-02 Joseph A Grand Composition and device for creating an underwater cloud
US2971490A (en) * 1944-05-13 1961-02-14 Dickson S Mckinney Explosive streamer
US2967506A (en) * 1945-05-11 1961-01-10 Clifford S Livermore Anti-torpedo system
US3097600A (en) * 1946-04-25 1963-07-16 James C Hopkins Sound generator
US4270479A (en) * 1947-12-24 1981-06-02 The United States Of America As Represented By The Secretary Of The Navy Torpedo guards
GB1046935A (en) * 1963-07-17 1966-10-26 Westland Aircraft Ltd Active sonars for detection of submarines
FR2514319A1 (fr) * 1981-10-09 1983-04-15 Tournay Omer Engin tactique sous-marin repondeur d'echo
DE3300067A1 (de) * 1983-01-04 1984-07-05 Hans Dr.rer.nat. 2000 Hamburg Gienapp Vorrichtung zum stoeren der ortung von u-booten

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3908577A1 (de) * 1989-03-16 1990-09-20 Laukien Guenther Verfahren und vorrichtung zur verminderung der schallemission getauchter unterseeboote
DE4322837A1 (de) * 1993-07-08 1995-04-06 Buck Chem Tech Werke Verfahren zum Erzeugen von Gasblasen in Wasser sowie Zeolithpartikel zu dessen Durchführung

Also Published As

Publication number Publication date
DE3608809A1 (de) 1987-09-17
EP0237891A2 (de) 1987-09-23
NO870869L (no) 1987-09-16
NO165064B (no) 1990-09-10
NO165064C (no) 1990-12-19
DK131987A (da) 1987-09-16
IL81867A (en) 1992-05-25
NO870869D0 (no) 1987-03-03
DE3760240D1 (en) 1989-07-20
DK131987D0 (da) 1987-03-13
EP0237891A3 (en) 1987-11-19

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