EP1249827A1 - Colonne acoustique, et antenne cylindrique pour sonar passif utilisant une telle colonne - Google Patents
Colonne acoustique, et antenne cylindrique pour sonar passif utilisant une telle colonne Download PDFInfo
- Publication number
- EP1249827A1 EP1249827A1 EP02290854A EP02290854A EP1249827A1 EP 1249827 A1 EP1249827 A1 EP 1249827A1 EP 02290854 A EP02290854 A EP 02290854A EP 02290854 A EP02290854 A EP 02290854A EP 1249827 A1 EP1249827 A1 EP 1249827A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- layer
- column
- acoustic
- antenna
- reflective layer
- 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
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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
- G10K11/18—Methods or devices for transmitting, conducting or directing sound
- G10K11/20—Reflecting arrangements
- G10K11/205—Reflecting arrangements for underwater use
-
- 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
- B63G8/39—Arrangements of sonic watch equipment, e.g. low-frequency, sonar
-
- 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 present invention relates to cylindrical antennas which are used as omnidirectional acoustic receivers in passive sonars, placed in particular on the hull of submarines.
- each column has the form of a module elongated parallelepiped with an electrical outlet at one of its ends.
- these modules are fixed so juxtaposed by being pressed against the carrier cylinder which is sometimes called "barrel".
- each receiving column is formed of a set of hydrophones superimposed on the height of the column and drowned in a set of layers superimposed on the thickness of the column. These layers have acoustic characteristics intended to improve the functioning of the antenna.
- Each column is wrapped in a layer of neoprene which provides sealing against seawater.
- Figure 1 a longitudinal section of a example of such a column according to known art.
- first layer 101 of polyurethane with a hardness greater than 70 Shores A which helps resist external aggressions.
- a steel plate 103 which constitutes a hard reflector for waves acoustic.
- a thick absorbent layer 104 consisting for example of a syntactic material such as polyurethane loaded with microballoons filled with air, or with a rubber-cork, forms a masking screen for the assembly.
- the two varieties of polyurethane constituting layers 101 and 102 present a product ⁇ C close to that of sea water.
- a 100 neoprene skin wraps the back of the set, waterproofing on the front face consisting of the first layer 101, which is welded on its periphery to this skin (or envelope) of neoprene.
- each column on the barrel, we use for example two supports 105 in the form of rails which hold the column by its ends, without touching the rear face of the envelope in neoprene.
- the invention proposes a acoustic column, especially for cylindrical sonar antenna passive, of the type comprising at least one outer layer of protection, an intermediate layer provided with a set hydrophones, a hard reflective layer, an absorbent layer and a protective envelope, mainly characterized in that that this column is formed of a first part comprising at minus the protective layer and the intermediate layer, and second part comprising at least the absorbent layer; these two parts being joined together by fixing means, allowing them to be assembled and fixed securely to the structure of the antenna, and the surrounding protective envelope only the first part.
- the hard reflective layer is included in the first part.
- the fixing means include at least 2 rods fixed perpendicular to the hard reflective layer to pass through it, and at least two brackets for fixing the first and second together part, and on the other side fix the column on the antenna structure.
- the two brackets are fixed on the rods so as to fold back towards the front of the column to finish with legs protruding outside the column at level of its front face to allow fixing from the front.
- the hard reflective layer is included in the second part and the fixing means include two upper and lower angles fixed on the ends of the hard reflective layer, which surround the layer absorbent and are terminated by legs which allow to fix the column on the antenna structure.
- the hard reflective layer is integrated in the second part and it has edges extending outward from this layer to form a cavity intended to receive the absorbent layer, and this layer hard reflector extends at the top and bottom of the acoustic column beyond the level of the outer protective layer and the intermediate layer; the extensions of this hard reflective layer having holes for inserting rods forming part of means for fixing the column to the structure of the antenna.
- the invention further provides an acoustic antenna cylindrical for passive sonar, mainly characterized in that that it includes a set of acoustic columns such as defined above, and in that it further comprises at least two upper and lower crowns fixed on a barrel by spacers, and shock absorbing pads for fixing the columns on the crowns by means of fixing these columns elastically.
- the invention therefore consists in making each column in two separable parts which can then be assembled to be mounted on two crowns connected to the pedestal of the submarine by means of mechanical decoupling.
- each column is manufactured in two parts, 200 and 201.
- the first part 200 is formed by the three layers 101, 102 and 103, with the hydrophones 110 embedded in the intermediate layer 102. This structure is identical to that comprising the same elements in figure 1.
- the protective neoprene shell 202 is vulcanized on this first part, so as to cover the back of the metal plate 103 instead of the layer compressible 104.
- This neoprene envelope then closes, as in the prior art, at the resistant layer 101.
- the second part of the column is formed by the single absorbent layer 204, of dimensions identical to those of the layer 104, but made of a material capable of being soaked in water without asking for special protection. From materials mentioned above, the one that will be preferred is the foam syntactic in polyurethane.
- the hard metallic reflective layer 103 is provided with rods 105, two in this embodiment, which are fixed, by welding for example, perpendicular to this layer and protruding outward from it.
- the length of these rods is substantially equal to the thickness of layer 204.
- the tightness at the level of the passage of these rods in the neoprene skin 202 is obtained from intrinsically, following the realization of this envelope by vulcanization on the sandwich formed by layers 101 to 103.
- This manufacturing method not only makes it possible to fix solidly the column on the barrel, but still able to replace if necessary layer 204, which is the most fragile part of the device.
- a pillar 310 corresponding to the bole described previously, two crowns are fixed using spacers 301 upper and lower, of which only the upper crown 300 is shown in the figure.
- the squares 210 of the columns 200/201 are then fixed on the crowns 300 by means of studs shock absorbers 320 positioned in the necessary locations, generally equidistant, on crowns 300.
- the fixing the brackets to the studs will preferably be done using screws 302, so as to facilitate the subsequent dismantling of the columns, to repair for example.
- the layer 204 is free to compress under the effect of hydrostatic pressure, without this influences the attachment of the entire column to the pillar 310, and without there being a loss of tightness of the part 200 comprising sensitive organs likely to be affected by infiltration of water.
- a first variant represented in FIG. 5, consists in replace the squares 210 by squares 510, returned by compared to the realization of Figure 2 to come to extend, not towards the rear of the device but towards the front of it, and fold back the outside of the column, at the outside of the layer 101, in the form of two legs 60 which allow a fixing of the column from the front for specific assemblies.
- the first part 500 is formed only of layers 101 and 102 comprising hydrophones 110, and neoprene skin, which then comes to bear on the rear face of the layer 102.
- the second part is formed by the metal plate 103 on which the absorbent layer 104 is fixed, for example by bonding, using a relatively weak adhesive which allows just the maintenance of this layer, which is not subjected to special efforts, and authorizes a possible disassembly for repair by simple traction on this layer.
- the dimensions of the plate 103 are slightly larger than those of the first part 500, so that overflowing at the top and bottom of it. We can thus spare in the ends of this plate, which protrude from part 500, holes through which 700 rods will be passed to fix the column on the epontille. These rods will for example be threaded with so as to facilitate fixing with nuts.
- the invention is not limited to the preceding description, which does not includes layers 101 to 204. Without departing from the scope of the invention, the number of these layers could be increased, by particular by using adaptation layers at the first part comprising the hydrophones, and layers additional depreciation at the level of the second part.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Radar, Positioning & Navigation (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transducers For Ultrasonic Waves (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
Description
- la figure 1, la coupe longitudinale d'une colonne acoustique selon l'art antérieur ;
- la figure 2, une coupe longitudinale d'une colonne selon une réalisation préférée de l'invention ;
- la figure 3, une vue en perspective cavalière des moyens de fixation d'une colonne telle que celle de la figure 3, sur un fût support ;
- la figure 4, un détail des moyens de fixation de la figure 3 ; et
- les figures 5 à 7, des vues en coupe de trois variantes de réalisation de l'invention.
Claims (7)
- Colonne acoustique, notamment pour antenne cylindrique de sonar passif, du type comportant au moins une couche extérieure de protection (101), une couche intermédiaire (102) munie d'un ensemble d'hydrophones (110), une couche réflectrice dure (103), une couche absorbante (204) et une enveloppe de protection (202), caractérisée en ce que cette colonne est formée d'une première partie (200) comportant au moins la couche de protection et la couche intermédiaire, et d'une seconde partie (201) comportant au moins la couche absorbante (204); ces deux parties étant réunies ensemble par des moyens de fixation (205, 210) permettant de les assembler et de les fixer de manière solide sur la structure de l'antenne, et l'enveloppe de protection (202) entourant seulement la première partie.
- Colonne acoustique selon la revendication 1, caractérisée en ce que la couche réflectrice dure (103) est incluse dans la première partie (200).
- Colonne acoustique selon la revendication 2, caractérisée en ce que les moyens de fixation comprennent au moins 2 tiges (205) fixées perpendiculairement à la couche réflectrice dure (103) pour traverser celle-ci, et au moins deux équerres (210) pour d'un côté fixer ensemble la première et la deuxième partie, et de l'autre côté fixer la colonne sur la structure de l'antenne.
- Colonne acoustique selon la revendication 3, caractérisée en ce que les deux équerres (510) sont fixées sur les tiges (205) de manière à se replier vers l'avant de la colonne pour se terminer par des pattes (60) faisant saillie à l'extérieur de la colonne au niveau de sa face avant afin de permettre une fixation par l'avant.
- Colonne acoustique selon la revendication 1, caractérisée en ce que la couche réflectrice dure (103) est incluse dans la deuxième partie (201) et que les moyens de fixation comprennent deux cornières haute et basse (50) fixées sur les extrémités de la couche réflectrice dure (103), qui viennent enserrer la couche absorbante (204) et sont terminées par des pattes (52) qui permettent de fixer la colonne sur la structure de l'antenne.
- Colonne acoustique selon la revendication 1, caractérisée en ce que la couche réflectrice dure (103) est intégrée dans la deuxième partie (201), qu'elle est munie de rebords (701) s'étendant vers l'extérieur de cette couche pour former une cavité destinée à recevoir la couche absorbante (204), et en ce que cette couche réflectrice dure s'étend en haut et en bas de la colonne acoustique au-delà du niveau de la couche extérieure de protection (101) et de la couche intermédiaire (102); les extensions de cette couche réflectrice dure comportant des trous (702) permettant d'insérer des tiges (700) faisant partie des moyens de fixation de la colonne sur la structure de l'antenne.
- Antenne acoustique cylindrique pour sonar passif, caractérisée en ce qu'elle comprend un ensemble de colonnes acoustiques selon l'une quelconque des revendications 1 à 6, et en ce qu'elle comprend en outre au moins deux couronnes supérieure et inférieure (300) fixées sur un fût (310) par des entretoises (301), et des plots amortisseurs (320) permettant de fixer les colonnes sur les couronnes par l'intermédiaire des moyens de fixation (210) de ces colonnes de manière élastique.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0105045A FR2823571B1 (fr) | 2001-04-12 | 2001-04-12 | Colonne acoustique et antenne cylindrique pour sonar passif utilisant une telle colonne |
FR0105045 | 2001-04-12 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1249827A1 true EP1249827A1 (fr) | 2002-10-16 |
EP1249827B1 EP1249827B1 (fr) | 2005-11-30 |
Family
ID=8862286
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20020290854 Expired - Lifetime EP1249827B1 (fr) | 2001-04-12 | 2002-04-05 | Colonne acoustique, et antenne cylindrique pour sonar passif utilisant une telle colonne |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1249827B1 (fr) |
DE (1) | DE60207628T2 (fr) |
FR (1) | FR2823571B1 (fr) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006015646A1 (fr) * | 2004-08-05 | 2006-02-16 | Atlas Elektronik Gmbh | Dispositif convertisseur electroacoustique pour antennes immergees |
WO2010046301A1 (fr) | 2008-10-20 | 2010-04-29 | Atlas Elektronik Gmbh | Antenne sous-marine |
WO2010046300A1 (fr) * | 2008-10-20 | 2010-04-29 | Atlas Elektronik Gmbh | Dispositif de fixation d'une antenne sous-marine |
US20120002508A1 (en) * | 2008-10-20 | 2012-01-05 | Atlas Elektronik Gmbh | Underwater antenna |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102015105430A1 (de) * | 2015-04-09 | 2016-10-13 | Atlas Elektronik Gmbh | Wandlereinrichtung, Wandlervorrichtung, Sonar und Wasserfahrzeug |
DE102020202776A1 (de) | 2020-03-04 | 2021-09-09 | Atlas Elektronik Gmbh | Reflektor für Wasserschallwandler |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2906993A (en) * | 1946-05-22 | 1959-09-29 | Raymond L Steinberger | Transducer for underwater sound |
US5499219A (en) * | 1993-11-23 | 1996-03-12 | Stn Atlas Elektronik Gmbh | Electro-acoustical transducer arrangement |
US5600609A (en) * | 1994-05-31 | 1997-02-04 | Thomson-Csf | Absorbent passive acoustic antenna |
-
2001
- 2001-04-12 FR FR0105045A patent/FR2823571B1/fr not_active Expired - Lifetime
-
2002
- 2002-04-05 EP EP20020290854 patent/EP1249827B1/fr not_active Expired - Lifetime
- 2002-04-05 DE DE2002607628 patent/DE60207628T2/de not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2906993A (en) * | 1946-05-22 | 1959-09-29 | Raymond L Steinberger | Transducer for underwater sound |
US5499219A (en) * | 1993-11-23 | 1996-03-12 | Stn Atlas Elektronik Gmbh | Electro-acoustical transducer arrangement |
US5600609A (en) * | 1994-05-31 | 1997-02-04 | Thomson-Csf | Absorbent passive acoustic antenna |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006015646A1 (fr) * | 2004-08-05 | 2006-02-16 | Atlas Elektronik Gmbh | Dispositif convertisseur electroacoustique pour antennes immergees |
US7542378B2 (en) | 2004-08-05 | 2009-06-02 | Atlas Elektronik Gmbh | Electroacoustic transducer arrangement for underwater antennas |
WO2010046301A1 (fr) | 2008-10-20 | 2010-04-29 | Atlas Elektronik Gmbh | Antenne sous-marine |
WO2010046300A1 (fr) * | 2008-10-20 | 2010-04-29 | Atlas Elektronik Gmbh | Dispositif de fixation d'une antenne sous-marine |
US20120002508A1 (en) * | 2008-10-20 | 2012-01-05 | Atlas Elektronik Gmbh | Underwater antenna |
Also Published As
Publication number | Publication date |
---|---|
FR2823571B1 (fr) | 2003-10-17 |
DE60207628T2 (de) | 2006-07-06 |
FR2823571A1 (fr) | 2002-10-18 |
DE60207628D1 (de) | 2006-01-05 |
EP1249827B1 (fr) | 2005-11-30 |
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