CA2150449A1 - Antenne acoustique passive absorbante - Google Patents

Antenne acoustique passive absorbante

Info

Publication number
CA2150449A1
CA2150449A1 CA002150449A CA2150449A CA2150449A1 CA 2150449 A1 CA2150449 A1 CA 2150449A1 CA 002150449 A CA002150449 A CA 002150449A CA 2150449 A CA2150449 A CA 2150449A CA 2150449 A1 CA2150449 A1 CA 2150449A1
Authority
CA
Canada
Prior art keywords
antennas
passive acoustic
acoustic antenna
antenna
absorbing
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
CA002150449A
Other languages
English (en)
Other versions
CA2150449C (fr
Inventor
Patrick Vacher
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.)
Thales SA
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2150449A1 publication Critical patent/CA2150449A1/fr
Application granted granted Critical
Publication of CA2150449C publication Critical patent/CA2150449C/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • G10K11/02—Mechanical acoustic impedances; Impedance matching, e.g. by horns; Acoustic resonators

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Transducers For Ultrasonic Waves (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Details Of Aerials (AREA)

Abstract

L'invention concerne les antennes acoustiques passives absorbantes destinées à être rapportées sur la coque des bateaux. Elles consiste à réaliser cette antenne sous la forme d'un empilement de couches (204-209) en polyuréthanne de différentes compositions pour obtenir des caractéristiques absorbantes et/ou réflectrices de manière à minimiser les signaux parasites reçus par les hydrophones (207) et à absorber au maximum les signaux provenant des sonars actifs extérieurs au bâtiment sur lequel sont placées ces antennes. Elle permet de réaliser des antennes conformes de faible épaisseur et de faible coût.
CA002150449A 1994-05-31 1995-05-29 Antenne acoustique passive absorbante Expired - Lifetime CA2150449C (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9406601A FR2720590B1 (fr) 1994-05-31 1994-05-31 Antenne acoustique passive absorbante.
FR9406601 1994-05-31

Publications (2)

Publication Number Publication Date
CA2150449A1 true CA2150449A1 (fr) 1995-12-01
CA2150449C CA2150449C (fr) 2005-02-08

Family

ID=9463686

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002150449A Expired - Lifetime CA2150449C (fr) 1994-05-31 1995-05-29 Antenne acoustique passive absorbante

Country Status (4)

Country Link
US (1) US5600609A (fr)
CA (1) CA2150449C (fr)
FR (1) FR2720590B1 (fr)
GB (1) GB2290002B (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2823571B1 (fr) * 2001-04-12 2003-10-17 Thomson Marconi Sonar Sas Colonne acoustique et antenne cylindrique pour sonar passif utilisant une telle colonne
JP2004133963A (ja) * 2002-10-08 2004-04-30 Pioneer Electronic Corp ピックアップ装置
US7456245B2 (en) * 2004-11-24 2008-11-25 Battelle Memorial Institute Energy-absorbent material and method of making
FR2987028B1 (fr) * 2012-02-17 2014-04-04 Dcns Structure de sous-marin comportant un baffle acoustique pour l'integration d'une antenne de reception sonar sur une coque mince

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB749930A (en) * 1953-03-31 1956-06-06 Bendix Aviat Corp Improvements in or relating to transducers
DE1811998A1 (de) * 1968-11-30 1970-06-11 Gruenzweig & Hartmann Absorptionsschicht fuer die Schallwellen in Fluessigkeiten
US3894169A (en) * 1972-02-18 1975-07-08 Rockwell International Corp Acoustical damping structure and method of preparation
DE3024457A1 (de) * 1979-08-27 1981-04-16 Kretztechnik GmbH, Frankenburg Ultraschallpruefkopf
US4390976A (en) * 1981-01-27 1983-06-28 The United States Of America As Represented By The Secretary Of The Navy Acoustic signal conditioning device
US5420825A (en) * 1982-08-31 1995-05-30 The United States Of America As Represented By The Secretary Of The Navy Noise control composite
FR2539541B1 (fr) * 1983-01-19 1986-09-19 Thomson Csf Dispositif a interface reflectrice d'ondes acoustiques
US4571520A (en) * 1983-06-07 1986-02-18 Matsushita Electric Industrial Co. Ltd. Ultrasonic probe having a backing member of microballoons in urethane rubber or thermosetting resin
JPS61194999A (ja) * 1985-02-23 1986-08-29 Terumo Corp 超音波探触子
US4628490A (en) * 1985-12-24 1986-12-09 The United States Of America As Represented By The Secretary Of The Navy Wideband sonar energy absorber
US5212671A (en) * 1989-06-22 1993-05-18 Terumo Kabushiki Kaisha Ultrasonic probe having backing material layer of uneven thickness
US4982385A (en) * 1989-11-17 1991-01-01 Westinghouse Electric Corp. Acoustic decoupler for a sonar array
FR2691596B1 (fr) * 1992-05-22 1995-04-28 Thomson Csf Antenne acoustique sous-marine à capteur surfacique.

Also Published As

Publication number Publication date
GB9510577D0 (en) 1995-07-19
GB2290002A (en) 1995-12-06
FR2720590A1 (fr) 1995-12-01
FR2720590B1 (fr) 1996-06-28
GB2290002B (en) 1998-01-28
CA2150449C (fr) 2005-02-08
US5600609A (en) 1997-02-04

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Legal Events

Date Code Title Description
EEER Examination request
MKEX Expiry

Effective date: 20150529