EP1253666A2 - Antenne sous-marine - Google Patents

Antenne sous-marine Download PDF

Info

Publication number
EP1253666A2
EP1253666A2 EP02001535A EP02001535A EP1253666A2 EP 1253666 A2 EP1253666 A2 EP 1253666A2 EP 02001535 A EP02001535 A EP 02001535A EP 02001535 A EP02001535 A EP 02001535A EP 1253666 A2 EP1253666 A2 EP 1253666A2
Authority
EP
European Patent Office
Prior art keywords
underwater antenna
antenna according
components
housing
underwater
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
Application number
EP02001535A
Other languages
German (de)
English (en)
Other versions
EP1253666B1 (fr
EP1253666A3 (fr
Inventor
Rainer Dr. Busch
Walter Dr. Sachs
Christoph Hoffmann
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.)
Atlas Elektronik GmbH
Original Assignee
Atlas Elektronik GmbH
STN Atlas Elektronik GmbH
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 Atlas Elektronik GmbH, STN Atlas Elektronik GmbH filed Critical Atlas Elektronik GmbH
Publication of EP1253666A2 publication Critical patent/EP1253666A2/fr
Publication of EP1253666A3 publication Critical patent/EP1253666A3/fr
Application granted granted Critical
Publication of EP1253666B1 publication Critical patent/EP1253666B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/04—Adaptation for subterranean or subaqueous use
    • 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
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/004—Mounting transducers, e.g. provided with mechanical moving or orienting device
    • G10K11/006—Transducer mounting in underwater equipment, e.g. sonobuoys

Definitions

  • the invention relates to an underwater antenna in Preamble of claim 1 defined genus.
  • Such underwater antennas are for certain applications, e.g. in conjunction with a mine detection or protection sonar or a sediment sonar for seismic surveys in the Seabed, considerable shock loads from pressure waves exposed to detonations.
  • housings of such underwater antennas are next to the electroacoustic transducers for sound reception or for Sound transmissions contain other components and assemblies, so e.g. Electronic components, such as preamplifiers, Transmission transformers, chokes, etc. These components are in a receiving space formed in the housing housed and attached to a holder, which in turn is fixed in the housing.
  • the invention has for its object in a Underwater antenna of the type described above Forces caused by explosions in the water triggered pressure waves on the housing of the Attack underwater antenna on the components to reduce.
  • the underwater antenna according to the invention has the advantage that by filling the recording room with water impedance-matched filler on the underwater antenna impacting pressure wave not at the boundary layer to the hollow Recording room is reflected, but the entire housing the underwater antenna without significant reflections passes. Since there is no reflection wave, which is the incoming pressure wave superimposed, the components through the pressure wave accelerates far less than one only air-filled recording space, by about half. In addition, the filling exercises a mechanical one Support function for the components and prevents on the other hand, by completely enclosing the components, that they resonate and there is another Increase the oscillating attack on the components Force, the so-called resonance exaggeration, comes again Doubling the acceleration value would cause. Overall, this is due to the filling of the recording space the components have lower forces, which is lower Requirements for the shock resistance of the components and lower demands on the bearing forces for the Fastening the components. Both leaves the Manufacturing costs of the underwater antenna decrease.
  • the filler is a liquid or a gel.
  • a Liquid filling facilitates the exchange or the Repair of components. This also applies to fillings with a gel if the gel has the property at Warming to become fluid.
  • the in Fig. 1 in longitudinal section and only schematically and in Fig. 2 shown as a constructive embodiment Underwater antenna is preferably used for mine detection and is an essential sensor of a mine avoidance system.
  • the Antenna has a rigid closed with a cover 11 Housing 10, which is attached to the free end of a carrier 12 is.
  • the carrier 12 is in the hull of a watercraft, especially a submarine, axially displaceable, so that the antenna in and through an opening in the fuselage floor can be extended. Possibly. the carrier 12 is also about his Longitudinal axis rotatable.
  • the underwater antenna has a so-called Transducer arrangement 13 which forms a surface array and consists of a large number from individual, from each other horizontally and vertically spaced transducers 131, which are in a casting 14 made of plastic, e.g. Polyurethane, are embedded.
  • the Converter arrangement 13 is in the front area of housing 10 recorded and transversely on one in the housing 10 extending mounting plate 15 attached.
  • On the of the Transducer assembly 13 facing away from the back of the mounting plate 15 is a housing space 16 for further components in the housing 10 17 provided the antenna. These components are 17 for example preamplifiers, transformer transformers, Chokes or other electronic components.
  • Fig. 1 Components 17 shown are in a constructive Execution can be seen in Fig. 2. They each have one double-layer circuit board 19 on which the Electronic components attached and electrical to each other are connected. Each circuit board 19 is already on the mentioned fastening pins 18 on the mounting plate 15th established. Connectors attached to the mounting plate 15 20 make the electrical connection between the Electronic components and the converters 131 of the Converter arrangement 13 ago.
  • ⁇ is the mass density
  • c the speed of sound
  • ⁇ the 1 / e width
  • the 1 / e width is the time period in which the pressure amplitude p (t) of the pressure wave normalized to the pressure amplitude p 0 has decayed to the value 1 / e.
  • a 1 / e width of ⁇ 1 • 10 -3 sec
  • a speed of sound c 1500m / sec
  • the pressure wave would be reflected at the interface between the encapsulation 14 and the receiving space 16 and the reflection wave would overlap the pressure wave.
  • the pressure amplitude acting on the mounting plate 15 would double, so that twice as high bearing forces would be required to prevent the components 17 from detaching from the mounting plate 15.
  • a liquid e.g. oil or uses a gel that becomes fluid when heated. With such a filler 21, the receiving space 16 emptied for repair or replacement of components 17 become.
  • a liquid can also be used as filler 21 Potting material, e.g. Polyurethane can be used cures.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Transducers For Ultrasonic Waves (AREA)
  • Details Of Aerials (AREA)
  • Support Of Aerials (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
EP02001535A 2001-04-24 2002-01-23 Antenne sous-marine Expired - Lifetime EP1253666B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10119867A DE10119867B4 (de) 2001-04-24 2001-04-24 Unterwasserantenne
DE10119867 2001-04-24

Publications (3)

Publication Number Publication Date
EP1253666A2 true EP1253666A2 (fr) 2002-10-30
EP1253666A3 EP1253666A3 (fr) 2008-06-18
EP1253666B1 EP1253666B1 (fr) 2012-03-07

Family

ID=7682413

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02001535A Expired - Lifetime EP1253666B1 (fr) 2001-04-24 2002-01-23 Antenne sous-marine

Country Status (4)

Country Link
EP (1) EP1253666B1 (fr)
AT (1) ATE548780T1 (fr)
AU (1) AU783946B2 (fr)
DE (1) DE10119867B4 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7542378B2 (en) * 2004-08-05 2009-06-02 Atlas Elektronik Gmbh Electroacoustic transducer arrangement for underwater antennas

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005053644B3 (de) * 2005-11-10 2007-05-31 Atlas Elektronik Gmbh Antennenmodul
DE102006051921B3 (de) 2006-11-03 2008-02-21 Atlas Elektronik Gmbh Akustische Unterwasserantenne
US8752699B2 (en) 2010-09-30 2014-06-17 Ethicon Endo-Surgery, Inc. Implantable fastener cartridge comprising bioabsorbable layers

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3739185A1 (de) 1987-11-19 1989-06-01 Krupp Atlas Elektronik Gmbh Wandlerelement
DE19518461C1 (de) 1995-05-19 1996-06-13 Stn Atlas Elektronik Gmbh Unterwasser-Schleppantenne
EP0944127A2 (fr) 1998-03-16 1999-09-22 STN ATLAS Elektronik GmbH Antenne remorquée

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3332754A1 (de) * 1983-09-10 1985-03-28 Fried. Krupp Gmbh, 4300 Essen Unterwasserschiff
DE3642747A1 (de) * 1986-12-15 1988-06-16 Krupp Atlas Elektronik Gmbh Huellkoerper fuer eine hydrophonanordnung
US4907208A (en) * 1988-12-02 1990-03-06 Lowrance Electronics, Inc. Sonar transducer assembly for fishing boats
WO1991006192A1 (fr) * 1989-10-17 1991-05-02 Ulrich Pakker Systeme de suspension pour sonar mou

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3739185A1 (de) 1987-11-19 1989-06-01 Krupp Atlas Elektronik Gmbh Wandlerelement
DE19518461C1 (de) 1995-05-19 1996-06-13 Stn Atlas Elektronik Gmbh Unterwasser-Schleppantenne
EP0944127A2 (fr) 1998-03-16 1999-09-22 STN ATLAS Elektronik GmbH Antenne remorquée

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7542378B2 (en) * 2004-08-05 2009-06-02 Atlas Elektronik Gmbh Electroacoustic transducer arrangement for underwater antennas

Also Published As

Publication number Publication date
DE10119867A1 (de) 2002-10-31
DE10119867B4 (de) 2005-10-13
AU3558102A (en) 2002-12-12
EP1253666B1 (fr) 2012-03-07
AU783946B2 (en) 2006-01-05
ATE548780T1 (de) 2012-03-15
EP1253666A3 (fr) 2008-06-18

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