EP0417225A1 - Verfahren und vorrichtung zur verminderung der schallemission getauchter unterseeboote. - Google Patents
Verfahren und vorrichtung zur verminderung der schallemission getauchter unterseeboote.Info
- Publication number
- EP0417225A1 EP0417225A1 EP90904233A EP90904233A EP0417225A1 EP 0417225 A1 EP0417225 A1 EP 0417225A1 EP 90904233 A EP90904233 A EP 90904233A EP 90904233 A EP90904233 A EP 90904233A EP 0417225 A1 EP0417225 A1 EP 0417225A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- outer shell
- submarine
- detector
- translator
- sound
- 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
Links
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
- B63G8/00—Underwater vessels, e.g. submarines; Equipment specially adapted therefor
- B63G8/28—Arrangement of offensive or defensive equipment
- B63G8/34—Camouflage
-
- 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
- B63G13/00—Other offensive or defensive arrangements on vessels; Vessels characterised thereby
- B63G13/02—Camouflage
- B63G2013/022—Camouflage using means for reducing noise emission into air or water
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/10—Applications
- G10K2210/127—Underwater acoustics, e.g. for submarine
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/10—Applications
- G10K2210/128—Vehicles
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/30—Means
- G10K2210/301—Computational
- G10K2210/3045—Multiple acoustic inputs, single acoustic output
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/30—Means
- G10K2210/321—Physical
- G10K2210/3212—Actuator details, e.g. composition or microstructure
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/30—Means
- G10K2210/321—Physical
- G10K2210/3216—Cancellation means disposed in the vicinity of the source
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S181/00—Acoustics
- Y10S181/40—Wave coupling
- Y10S181/402—Liquid
Definitions
- the invention relates to a method for reducing the sound emission of submarines submerged, in which mechanical elements moving in the interior emit vibrations to an outer shell on a transmission path and the vibrations are damped on the transmission path.
- the invention further relates to a device for reducing the noise emission of submarines submerged, in which damping means are arranged between a mechanical element moved in the interior of the submarine and an outer shell.
- the invention is intended in particular to camouflage the submarines.
- both active and passive systems are used to locate the submarines.
- a search signal generally a sound signal in the sound or infrasound range, is emitted from a searching vehicle, for example a frigate. These sound signals are reflected on the surface of the submarine and reach receivers on board the searching vehicle, so that the position of the submarine can be determined from these received signals by means of suitable evaluation methods.
- Passive location methods take advantage of physical phenomena that are caused by the submarine itself. For example, it is known to take advantage of the fact that the metallic parts of the submarine disrupt the earth's magnetic field when locating submarines. Positioning probes are therefore known which are based on the principle of nuclear magnetic resonance and are towed by ships or aircraft on a long line over the areas of the sea to be searched in order to detect faults in the earth's magnetic field.
- Another passive location method is based on the measurement of sound signals which are emitted by the submarine.
- a submarine in fact radiates sound to the surrounding sea water in the same way as moving parts in the submarine transmit vibrations to the outer skin.
- Measurable sound signals are primarily generated by moving propulsion elements of the submarine, i.e. by the rotating parts of the propulsion engine and by the shaft, but the rotating screw and the cavitation caused by the screw must also be taken into account as sound sources.
- sound signals are generated when the elevator and depth rudder are actuated, when deflating air and when shifting trimming masses, which can be detected on board modern frigates using correspondingly sensitive passive location systems.
- nuclear reactors such as those used on board submarines
- the control rods are moved in the reactor vessel at a predetermined frequency, the immersion depth of the control rods being adjustable so that the power emitted by the nuclear reactor can be adjusted in this way.
- a relatively intense sound signal also arises which can be used to locate such submarines driven by nuclear technology.
- a method is known from DE-OS 34 06 343 with which sound signals from submarines, the intensity of which is only slightly above that of the ambient noise, can be recognized from the ambient noise. Numerous measures are known for preventing submarines from being recognized by the passive sound location systems described above.
- the essential measure is, of course, to reduce the overall sound emission of the submarine if possible.
- particularly low-noise machine parts for example bearings, are used in the drive area of the submarine, so that the total sound energy generated is kept as low as possible.
- An electrical system for submarines is known from DE-OS 36 00 258, which has means for camouflaging the submarine.
- the known system takes into account the fact that an alternating current network of the submarine operates in the frequency range between 60 Hz and 400 Hz and that it is inevitable that frequencies in this frequency range plus their harmonics are emitted to the surrounding water via the hull.
- a frequency of, for example, 30 kHz is therefore provided for the alternating current network of the submarine, which frequency is far above the reception frequency range of other location systems.
- this known electrical system has the disadvantage that it can only camouflage the submarine submerged as long as the frequency ranges of enemy passive location systems do not also operate in the range of 30 kHz, for example.
- the enemy can locate the submarines by checking the new frequency range by adapting their passive location systems.
- a device for disrupting the location of submarines in which a body can be ejected from a submarine that emits sound. is equipped. This body is used to mislead a sonar system, ie an active acoustic location system on board an enemy vehicle.
- a device for disturbing and deceiving waterborne sound locating systems is known.
- a support body of the known device is provided with pyrotechnic charges, the combustion of which leads to the pulsed release of gas bubbles, which e.g. cause low-frequency structure-borne noise and high-frequency oscillating outer cavitation layers on a housing, from which they also emerge to form a bubble curtain.
- the known device is intended to distract from an object to be protected and to simulate a reflecting target object due to the slowly floating bubbles.
- the invention is therefore based on the object of developing a method and a submarine of the type mentioned at the outset in such a way that the location is made considerably more difficult, if not impossible, by passive sound location systems, in that the amplitude of the signals received by the passive sound location systems get into the area of natural noise and go under.
- this object is achieved according to the invention in that the vibrations are actively damped in that the movement of the mechanical elements relative to the outer shell is detected and that the movement is superimposed on an opposite movement.
- the object on which the invention is based is achieved in that the damping means have a detector for detecting and a translator for adjusting the relative position of the element to the outer shell, and in that a controller is located between an output of the detector and a Input of the translator is switched such that when the relative position changes, the translator adjusts the relative position in the opposite direction.
- the submarine is ideally at rest when viewed from the outside, so that the vibrations emitted to the surrounding sea water are suppressed, at least but can be significantly reduced in their sound power.
- the sound signals emitted by the submarine are reduced so much that they are lost in the noise generated by the natural ambient sound in a passive location system of an enemy vehicle.
- the detector and the translator are arranged in series in a transmission path between the element and the outer shell.
- the detector is a sensor for detecting the force which is exerted on the outer shell by the seismic mass of the element as a result of the acceleration causing the movement.
- This measure has the advantage that even the slightest deflections, such as those that occur during the sound propagation in the components of a submarine, can be reliably detected, which is only possible with considerable effort with other position sensors.
- both the detector and the translator have a piezo element.
- This measure has the advantage that, on the one hand, the forces corresponding to the disruptive oscillating movement are converted into an electrical signal and, on the other hand, a counter-movement can be generated in the translator from an electrical control signal.
- a counter-movement can be generated in the translator from an electrical control signal.
- an embodiment of a device according to the invention is particularly preferred, in which the outer casing is connected to an inner casing receiving the moving elements via at least three supports and the supports each have at least one detector and one translator.
- This measure has the advantage that all vibration-generating elements, namely the moving mechanical elements, are arranged in the closed interior, which is enclosed by the inner shell. All sound events that can propagate to the outer shell must therefore make their way through the inner shell and can essentially only be transmitted to the outer shell via the supports. However, since the previously described active damping measures are provided in the supports, the outer shell is effectively shielded from all kinds of sound events that are triggered by the moving mechanical elements.
- FIG. 1 shows a schematic view of a combat situation in which a frigate tries to locate a submersible submarine by means of a passive sound locating system
- Figure 2 is an extremely schematic longitudinal section through a submarine at the level of a nuclear drive on board the same.
- FIG. 3 shows a greatly enlarged detail from FIG. 2 to explain an actively damped support used according to the invention
- FIG. 4 shows a diagram illustrating a frequency response of the active damping of the support according to FIG. 3;
- Fig. 5 shows another embodiment of an actively damping support.
- 10 denotes a sea on which a frigate 11 is located in search of submarines.
- the frigate 11 is provided with a passive sound location system 13, which has an opening cone 14, for example.
- the frigate 11 in turn generates sound waves 15, in particular by driving the frigate 11.
- 24, 25 and 26 sound waves are referred to, which are emitted from the submarine 20.
- 25 is intended to symbolize the proportion of sound waves that are generated by the drive elements of submarine 20, in particular by the rotating shaft, the rotating motor elements and the like.
- 26 is intended to symbolize the portion of the sound waves that is generated by the rotation of the screw 23, in particular by the cavitations caused by the screw 23.
- the submarine 20 is also equipped with a passive sound location system 27 which sweeps over a cone 28.
- FIG. 2 shows a radial section through the submarine 20 according to FIG. 1, namely at the level of the nuclear drive 21.
- the submarine 20 is provided with an outer shell 30 which surrounds an inner shell 31 on all sides.
- the inner shell 31 is supported in the outer shell 30 by means of four actively damped supports 32 to 35 distributed over the circumference of the inner shell 31.
- the supports 32 to 35 can be arranged discretely over the length of the submarine 20.
- the supports 32 to 35 can also be arranged obliquely to a radius instead of in the radial direction, as shown in FIG. 2, and it is also conceivable that instead of four, each 90 ° over the circumference of the inner shell 31 offset supports 32 to 35, three such supports or more than four supports can also be used without going beyond the scope of the present invention.
- a nuclear reactor 37 is arranged on a base 36 in the inner shell 31.
- the nuclear reactor 37 is of a conventional type and has control rods 38 which can be moved into and out of a reactor vessel by means of a control rod drive 39 in the direction of an arrow 40.
- control rods 38 In nuclear reactors 37 of the type of interest here, as are used on board submarines 20, the usual procedure is to immerse the control rods 38 in the reactor vessel in a periodic movement, the power emitted by the nuclear reactor 37 being determined by amplitude modulation, i.e. is adjusted by varying the immersion depth of the control rods 38.
- the supports 32 to 35 are designed as active damping elements.
- a detector 50 and a translator 51 are arranged in series in each of the supports 32 to 35, the detector 50 being located in each case on the outer shell 30.
- Detector is to be understood here to mean any element which is able to determine a relative movement of a moving mechanical element, in the present case thus the inner shell 31, relative to the outer shell 30.
- pressure sensors but also displacement sensors, e.g. Interferometer or the like can be used.
- Translator is to be understood to mean any device which allows a specific actuating movement to be generated as a function of an actuating signal.
- the detector 50 and the translator 51 can again be seen and it can clearly be seen that both the detector 50 and the translator 51 each have a piezoelectric element 52 and 53, respectively.
- the piezo detector element 52 is connected to an input 54 of a control amplifier 55, the output 56 of which is connected to the piezo transformer element 53. If the inner shell 31 is now deflected by some mechanical movement in its interior, as was explained above with the aid of arrows 40 to 42, the inner shell 31 experiences a deflection in the axial direction of the support 34, which in FIG. 3 has the complex size x "is marked.
- FIG. 4 shows the frequency response of the transmission, ie the ratio of the amounts of ⁇ z and " x over the frequency f for a specific configuration of the elements involved.
- the formula for the transmission is also given, with m_ already as the mass of the inner shell 31 and the components of the submarine 20 arranged therein.
- the quotient (i P / O1) D denotes the stiffness of the detector 50
- the quotient ( ⁇ P / oil) ⁇ denotes the stiffness of the translator 57
- the quotient ⁇ 1 / U) denotes the sensitivity of the translator 51
- the quotient (b Q / P) denotes the sensitivity of the detector 50
- 2 is the internal resistance of the detector 50
- Z2 is the capacitance of the detector 50
- the complex variable G finally represents the complex amplification of the control amplifier 55.
- the curve 60 drawn in FIG. 4 results, which shows an amount 1 of transmission for very low frequencies, but then drops steeply with an intermediate stage, so that above a cut-off frequency fi, a continuously increasing attenuation of " x " takes place opposite saufindetT.
- a curve 61 is drawn in dashed lines in FIG. 4, in which the same arrangement was calculated with passive damping.
- Passive damping is to be understood to mean suspensions and the like. It can clearly be seen that the amount of transmission in the case of curve 61 assumes the amount 1 for several orders of magnitude of the logarithmically plotted frequency f, then initially changes into the natural resonance characteristic of passively damped systems and only then drops to amounts less than 1 in order to assume the same damping behavior as the active damping system only at very high frequencies of more than 6 orders of magnitude above the cut-off frequency fi.
- the area 62 coincides with the frequency range of conventional moving units on board a submarine, above all with the speeds the drive elements of the submarine and heavy auxiliary units.
- 70 denotes a first oscillation of larger amplitude, e.g. the vibration of the inner shell 31.
- This vibration is transmitted via a first rod symbolized by 71 to a cylinder 72 in which a piston 73 runs.
- a pressure chamber 74 is then located between the piston 73 and the cylinder 72.
- the piston 73 is in turn connected to a second rod 75 which transmits a second vibration 76 of significantly reduced amplitude or even amplitude compensated to zero, e.g. to the outer shell 30.
- a pressure line 77 is connected to the pressure chamber 74 and leads to an adjustable pressure source 78.
- a pressure sensor 79 is also arranged in the pressure chamber 74 and reproduces a signal to a controller 80 corresponding to the pressure prevailing in the pressure chamber 74.
- the controller 80 in turn controls the pressure source 78, for example a pump.
- a formula for the transmission can be determined using equivalent circuit diagrams, which corresponds to the formula shown in FIG. 4 for the case of active damping with piezo elements, and also the frequency response of the arrangement according to FIG. 5 corresponds to that of FIG. 4.
- Method for influencing a sound source in particular a submerged submarine and submarine
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
- Vibration Prevention Devices (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3908577 | 1989-03-16 | ||
DE3908577A DE3908577A1 (de) | 1989-03-16 | 1989-03-16 | Verfahren und vorrichtung zur verminderung der schallemission getauchter unterseeboote |
PCT/DE1990/000192 WO1990010926A1 (de) | 1989-03-16 | 1990-03-16 | Verfahren und vorrichtung zur verminderung der schallemission getauchter unterseeboote |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0417225A1 true EP0417225A1 (de) | 1991-03-20 |
EP0417225B1 EP0417225B1 (de) | 1995-02-22 |
Family
ID=6376465
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90904233A Expired - Lifetime EP0417225B1 (de) | 1989-03-16 | 1990-03-16 | Verfahren und vorrichtung zur verminderung der schallemission getauchter unterseeboote |
Country Status (5)
Country | Link |
---|---|
US (1) | US5130948A (de) |
EP (1) | EP0417225B1 (de) |
JP (1) | JPH03505129A (de) |
DE (2) | DE3908577A1 (de) |
WO (1) | WO1990010926A1 (de) |
Families Citing this family (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2703553B1 (fr) * | 1993-04-02 | 1995-05-12 | Gec Alsthom Transport Sa | Procédé de contrôle actif du bruit produit par un appareil et dispositif de mise en Óoeuvre du procédé. |
US5473214A (en) * | 1993-05-07 | 1995-12-05 | Noise Cancellation Technologies, Inc. | Low voltage bender piezo-actuators |
US6011345A (en) * | 1996-02-08 | 2000-01-04 | Emf Industries, Inc. | Device and method for controlling transductive systems |
FR2772472B1 (fr) * | 1997-12-17 | 2000-02-04 | France Etat | Procede et dispositif de detection acoustique en presence de source de bruit parasite a faible rapport signal sur bruit |
DE10223965A1 (de) * | 2002-05-29 | 2003-12-11 | Siemens Ag | Schwingungsdämpfungsvorrichtung für Antriebsaggregate von Schiffsantriebsanlagen von Über- und Unterwasserschiffen |
EP2182240B1 (de) * | 2002-09-24 | 2014-08-06 | Bell Helicopter Textron Inc. | Ein Verfahren zur Regelung der akustischen Strahlung eines Schiffs |
DE10305777A1 (de) * | 2003-02-12 | 2004-08-26 | Howaldtswerke-Deutsche Werft Ag | Unterseeboot |
US20040240318A1 (en) * | 2003-05-16 | 2004-12-02 | Exxonmobil Upstream Research Company | Method for improved bubble curtains for seismic multiple suppression |
US8162606B2 (en) | 2004-08-30 | 2012-04-24 | Lord Corporation | Helicopter hub mounted vibration control and circular force generation systems for canceling vibrations |
US7206258B1 (en) | 2005-04-13 | 2007-04-17 | United States Of America As Represented By The Secretary Of The Navy | Dual response acoustical sensor system |
DE102007001656B3 (de) | 2007-01-11 | 2008-07-24 | Howaldtswerke-Deutsche Werft Gmbh | Unterseeboot mit einem Schaltschrank |
US8170225B2 (en) * | 2007-02-14 | 2012-05-01 | Integrated Dynamics Engineering Gmbh | Method for adapting a vibration isolation system |
DE102008000816A1 (de) * | 2008-03-26 | 2009-10-01 | Robert Bosch Gmbh | Vorrichtung und Verfahren zur Anregung und/oder Dämpfung und/oder Erfassung struktureller Schwingungen einer plattenförmigen Einrichtung mittels einer piezoelektrischen Streifeneinrichtung |
DE102008025812A1 (de) * | 2008-05-29 | 2009-12-10 | Howaldtswerke-Deutsche Werft Gmbh | Unterseeboot |
CA2746048C (en) | 2008-12-18 | 2014-07-08 | Bell Helicopter Textron Inc. | Method and apparatus for improved vibration isolation |
CA2754205C (en) | 2009-03-12 | 2015-05-19 | Bell Helicopter Textron Inc. | Method and apparatus for improved vibration isolation |
US8882091B2 (en) | 2011-11-11 | 2014-11-11 | Textron Innovations Inc. | Vibration isolation system |
RU2556867C1 (ru) * | 2013-12-30 | 2015-07-20 | Закрытое акционерное общество Научно-производственное внедренческое предприятие "Турбокон" | Активная виброизолирующая система трубопроводов аварийной системы расхолаживания ядерного реактора подводной лодки |
DE102014221323B4 (de) * | 2014-10-21 | 2017-11-23 | Thyssenkrupp Marine Systems Gmbh | Unterseeboot |
DE102014221327A1 (de) * | 2014-10-21 | 2016-04-21 | Thyssenkrupp Ag | Wasserfahrzeug |
RU2630780C1 (ru) * | 2016-09-19 | 2017-09-13 | Олег Савельевич Кочетов | Система виброизоляции ядерного реактора подводной лодки |
RU2645468C1 (ru) * | 2016-12-09 | 2018-02-21 | Олег Савельевич Кочетов | Система виброизоляции ядерного реактора подводной лодки |
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 |
JP6997596B2 (ja) | 2017-11-09 | 2022-01-17 | 三菱重工コンプレッサ株式会社 | 防音制御システム、防音制御装置、防音制御方法、プログラム |
CN110865379B (zh) * | 2019-11-26 | 2022-06-21 | 哈尔滨工程大学 | 一种悬浮型核能供电声呐点阵单元 |
CN111442061A (zh) * | 2020-04-27 | 2020-07-24 | 中国舰船研究设计中心 | 一种共形阵声纳接收阵隔振装置 |
CN113002746B (zh) * | 2021-02-02 | 2022-03-08 | 中国船舶重工集团公司第七一九研究所 | 消声式冷却器和船舶冷却系统 |
Family Cites Families (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE315237C (de) * | ||||
DE315238C (de) * | ||||
DE2318305A1 (de) * | 1973-04-12 | 1974-10-31 | Bundesrep Deutschland | Bremsvorrichtung fuer eine aus einer geschosshuelle auf der flugbahn ausstossbare nutzlast |
DE2318304C1 (de) * | 1973-04-12 | 1978-02-09 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Verfahren und Vorrichtung zur Herabsetzung des Eigenstörpegels von Unterwassergeräten |
US4083433A (en) * | 1976-11-16 | 1978-04-11 | Westinghouse Electric Corporation | Active vibration damper with electrodynamic sensor and drive units |
JPS601699B2 (ja) * | 1977-04-12 | 1985-01-17 | 三菱電機株式会社 | Pcm記録再生装置 |
FR2504275A1 (fr) * | 1981-04-15 | 1982-10-22 | Thomson Csf | Systeme de telemetrie passive |
WO1983003700A1 (en) * | 1982-04-19 | 1983-10-27 | Chaplin, George, Brian, Barrie | Method of and apparatus for active vibration isolation |
GB2122052B (en) * | 1982-06-09 | 1986-01-29 | Plessey Co Plc | Reducing noise or vibration |
DE3300067A1 (de) * | 1983-01-04 | 1984-07-05 | Hans Dr.rer.nat. 2000 Hamburg Gienapp | Vorrichtung zum stoeren der ortung von u-booten |
SE455890B (sv) * | 1983-02-24 | 1988-08-15 | Philips Norden Ab | Sett att bestemma leget av en ljudkella inom ett vattenomrade samt anleggning for utforande av settet |
DE3332754A1 (de) * | 1983-09-10 | 1985-03-28 | Fried. Krupp Gmbh, 4300 Essen | Unterwasserschiff |
DE3406343A1 (de) * | 1984-02-22 | 1985-08-29 | Messerschmitt-Bölkow-Blohm GmbH, 2800 Bremen | Verfahren zur ortung von signalquellen mit stoersignalunterdrueckung |
JPS6179038A (ja) * | 1984-09-25 | 1986-04-22 | Mitsubishi Heavy Ind Ltd | 振動消振装置 |
JPS61286634A (ja) * | 1985-06-14 | 1986-12-17 | Meiritsu Seiki Kk | 除振装置 |
DE3531231A1 (de) * | 1985-08-31 | 1987-03-12 | Krupp Gmbh | Verfahren zum peilen von zielen |
DE3600258A1 (de) * | 1986-01-08 | 1987-07-09 | Horst Dipl Phys Gehm | Elektrische anlage fuer untersee-boote |
DE3608809A1 (de) * | 1986-03-15 | 1987-09-17 | Diehl Gmbh & Co | Einrichtung zum stoeren und taeuschen von wasserschall-ortungsanlagen |
JPS63246527A (ja) * | 1987-04-01 | 1988-10-13 | Nec Corp | 艦船の雑音低減装置 |
DD264658A1 (de) * | 1987-10-30 | 1989-02-08 | Thesen Mathias Werft | Vorrichtung zur verminderung der kippschwingungen von schiffsdieselmotoren |
GB8816188D0 (en) * | 1988-07-07 | 1988-11-16 | Marconi Gec Ltd | Mounting for machinery |
DE3827240A1 (de) * | 1988-08-11 | 1990-02-15 | Renk Tacke Gmbh | Daempfungs- und positioniereinrichtung fuer getriebe |
JP3194639B2 (ja) * | 1993-01-30 | 2001-07-30 | ライオン株式会社 | 柔軟剤組成物 |
-
1989
- 1989-03-16 DE DE3908577A patent/DE3908577A1/de active Granted
-
1990
- 1990-03-16 DE DE59008511T patent/DE59008511D1/de not_active Expired - Fee Related
- 1990-03-16 JP JP2504519A patent/JPH03505129A/ja active Pending
- 1990-03-16 WO PCT/DE1990/000192 patent/WO1990010926A1/de active IP Right Grant
- 1990-03-16 US US07/602,310 patent/US5130948A/en not_active Expired - Fee Related
- 1990-03-16 EP EP90904233A patent/EP0417225B1/de not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO9010926A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE59008511D1 (de) | 1995-03-30 |
JPH03505129A (ja) | 1991-11-07 |
DE3908577A1 (de) | 1990-09-20 |
EP0417225B1 (de) | 1995-02-22 |
US5130948A (en) | 1992-07-14 |
DE3908577C2 (de) | 1993-07-15 |
WO1990010926A1 (de) | 1990-09-20 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0417225B1 (de) | Verfahren und vorrichtung zur verminderung der schallemission getauchter unterseeboote | |
DE3153282C2 (de) | ||
DE3908572C2 (de) | ||
DE69113462T3 (de) | Verfahren und vorrichtung zum suchen eines gegenstands. | |
EP0414865B1 (de) | Verfahren zum tarnen der von den schallabstrahlenden mechanischen elementen eines fahrzeuges abgestrahlten schallsignale; insbesondere eines getauchten unterseebootes und unterseeboot | |
EP0742372B1 (de) | Überwachungssystem zur Feststellung einer Kavitationsintensität | |
EP3303120B1 (de) | Unterseeboot mit reduzierter signatur | |
DE2143116C1 (de) | ||
DE68911685T2 (de) | Vorrichtung und verfahren zur entdeckung und vernichtung von unterseeboten aus einem plugzeug. | |
DE2922592C2 (de) | Verfahren zur Abwehr von Flugkörpern | |
DE3442051C2 (de) | ||
DE69102429T2 (de) | Verfahren zum bekämpfen von torpedos. | |
DE3403349A1 (de) | Zuendsignalgeber | |
DE19857760C1 (de) | Verfahren zur passiven akustischen Peilung eines Schall ins Wasser abstrahlenden Ziels | |
DE102011116288B4 (de) | Unterwasserfahrzeug mit einem optischen Strahlenwirksystem | |
EP1376079B1 (de) | Verfahren zum Detektieren von luftverbrachten Unterwasserlaufkörpern | |
DE3346299C1 (de) | Verfahren zur Überwindung eines ein U-Boot angreifenden Torpedos | |
DE102021214962A1 (de) | Wasserfahrzeug mit einer Ausbringvorrichtung | |
DE4132964C1 (en) | Registering acoustic near field of marine vessel - using platform for hydrophones and distance sensors at set spacing to locate dominant sources e.g. engine, generator | |
EP0492546B1 (de) | Unterwasserwaffe mit aktiv ortender akustischen Zielsuchvorrichtung | |
DE102014221323B4 (de) | Unterseeboot | |
DE2731044A1 (de) | Anordnung zur seismischen erforschung des meeresgrundes | |
DD301073A7 (de) | Anordnung zum Messen und Erkennen von Unterwasserschallpegelveränderungen | |
DE3318763A1 (de) | Verfahren zur Abwehr akustisch gelenkter Torpedos | |
DE2636172A1 (de) | Verfahren und vorrichtung zum erzeugen akustischer unterwassersignale |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19901207 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE FR GB IT NL SE |
|
17Q | First examination report despatched |
Effective date: 19930528 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE FR GB IT NL SE |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SE Payment date: 19950223 Year of fee payment: 6 |
|
ET | Fr: translation filed | ||
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 19950221 |
|
REF | Corresponds to: |
Ref document number: 59008511 Country of ref document: DE Date of ref document: 19950330 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 19950331 Year of fee payment: 6 |
|
ITF | It: translation for a ep patent filed |
Owner name: BUGNION S.P.A. |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Effective date: 19960317 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Effective date: 19961001 |
|
NLV4 | Nl: lapsed or anulled due to non-payment of the annual fee |
Effective date: 19961001 |
|
EUG | Se: european patent has lapsed |
Ref document number: 90904233.5 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 19970129 Year of fee payment: 8 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 19970213 Year of fee payment: 8 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 19970508 Year of fee payment: 8 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19980316 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY Effective date: 19980331 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 19980316 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19981201 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20050316 |