EP2104934A2 - Unterwasserantenne - Google Patents
UnterwasserantenneInfo
- Publication number
- EP2104934A2 EP2104934A2 EP07819860A EP07819860A EP2104934A2 EP 2104934 A2 EP2104934 A2 EP 2104934A2 EP 07819860 A EP07819860 A EP 07819860A EP 07819860 A EP07819860 A EP 07819860A EP 2104934 A2 EP2104934 A2 EP 2104934A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- reflector
- plate
- underwater antenna
- antenna according
- reflector plate
- 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
- 230000007423 decrease Effects 0.000 claims description 15
- 238000005452 bending Methods 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 230000000295 complement effect Effects 0.000 claims description 5
- 229920005830 Polyurethane Foam Polymers 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 238000013016 damping Methods 0.000 claims description 3
- 239000011496 polyurethane foam Substances 0.000 claims description 3
- 239000006260 foam Substances 0.000 claims description 2
- 230000003247 decreasing effect Effects 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 description 5
- 239000007779 soft material Substances 0.000 description 4
- 238000005538 encapsulation Methods 0.000 description 3
- 230000001788 irregular Effects 0.000 description 3
- 239000004814 polyurethane Substances 0.000 description 3
- 229920002635 polyurethane Polymers 0.000 description 3
- 230000001902 propagating effect Effects 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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
-
- 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
- G10K11/002—Devices for damping, suppressing, obstructing or conducting sound in acoustic devices
-
- 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
- G10K11/008—Arrays of transducers
-
- 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
-
- 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
- G10K11/26—Sound-focusing or directing, e.g. scanning
- G10K11/28—Sound-focusing or directing, e.g. scanning using reflection, e.g. parabolic reflectors
Definitions
- the invention relates to an underwater antenna according to the preamble of claim 1.
- a series of electroacoustic transducers in the direction of sound incidence is arranged in front of a reflector which has two cuboid metal plates made of aluminum and an intermediate layer as foil.
- the intermediate layer is glued to the two metal plates.
- the intermediate layer has a layer structure, as it is known as a constrained lining and is described by way of example in DE 36 21 318 A1.
- the intermediate layer serves for the effective damping of bending vibrations propagating in the antenna carrier, for example in the wall of a submarine.
- the bending vibrations are radiated and received as noise from the electro-acoustic transducers of the transducer assembly, whereby the positioning accuracy of targets is significantly reduced.
- Such bending oscillations in the antenna carrier are caused by vibrations of, for example, submarine-mounted drive units and devices.
- the reflector is designed as a spring-mass system and has, in addition to the composite of metal plates and intermediate layer acting as a spring, soft sound plate, such as an elastic foam plate, preferably from Polyurethane foam, on, on the in
- the designed as hydrophones electro-acoustic transducers are glued to spacers, which are in turn inserted into the front metal plate of the reflector positionally accurate.
- spacers By means of a hard encapsulation made of polyurethane, a rod-shaped body, a so-called. Stave obtained, which is attached to the antenna carrier.
- the underwater antenna has a multiplicity of staves arranged next to one another on the antenna carrier and, depending on the design of the antenna carrier (hollow cylinder or plate), is a so-called cylinder base or a so-called flank array.
- the invention has for its object to suppress by design measures the formation of modes in the reflector of the underwater antenna.
- the underwater antenna according to the invention has the advantage that due to the uneven shape of the reflector no sufficiently long path lengths with constant geometry for the mode formation are present in the longitudinal direction of the reflector and thus prevents the formation of modes in the working frequency range of the underwater antenna becomes.
- the transfer function of the inventively designed reflector has a constant frequency over the frequency in the working frequency range. The characteristic of modes of transfer function with maxima and minima is shifted to a higher frequency range, which is above the operating frequency of the converter.
- the remote from the transducers rear wall of the reflector plate is designed so that the distance of the rear wall of the transducer facing, planar front wall of the reflector plate linearly increases or decreases.
- the reflector plate thereby has a wedge shape.
- the reflector is designed as a spring-mass system and additionally has a sound-absorbing plate, which bears against the rear wall of the reflector plate facing away from the transducers.
- the sound-proof plate is shaped so that their seen in sound incidence direction thickness or height varies over the length of the reflector, for example so that the sound-soft plate also has wedge shape .
- FIG. 1 shows a longitudinal section of an underwater antenna with a series of transducers of a plurality of electro-acoustic transducers and a reflector associated row of the reflector
- Fig. 2 is a longitudinal section of the reflector of
- Fig. 3 is a detail of a longitudinal section of the
- FIG. 4 is a detail of a similar representation, as in Fig. 1 of another embodiment of the underwater antenna,
- Fig. 5 a detail of a perspective
- the schematically sketched in longitudinal section in Figure 1 underwater antenna has a greater number of leaf depths juxtaposed, spaced transducer rows 11, each transducer row 11 of a plurality, in the embodiment six, lined up from one behind the other and preferably constant distance from each other arranged electro-acoustic transducers 12 exists.
- a reflector 13 is arranged in the direction of sound incidence behind each row of transducers 11.
- the sound incidence direction is symbolized by arrow 10 in FIG.
- the transducer row 11 and the reflector 13 are each embedded in an acoustically transparent hard encapsulation 14 of a processable by casting, essentially tough elastic elastomer.
- polyurethane is used as the elastomer.
- the hard encapsulation 14 creates a rod-shaped body, which is also referred to as a so-called. Stave.
- a plurality of such staves are arranged side by side on an antenna carrier 15 so that the transducer rows 11 are vertically aligned.
- the antenna carrier 15 may be, for example, the side wall of a submarine or a GRP cylinder.
- the electroacoustic transducers 12 are designed as hydrophones, which are small ball ceramics and are provided for producing an electrical connection with connecting lines, not shown here. As also not shown here, lead the leads to connecting cables of an electro-acoustic receiving device.
- the reflector 13 has two reflector plates 16, 17 and a bending wave damping intermediate layer 18.
- the first reflector plate 16 is arranged in the direction of sound incidence 10 immediately behind the transducers 12 and receives the transducers 12 on a flat front wall 161.
- the transducers 12 are adhesively bonded to small spacers 19, which in turn are fixed in exact position on the front wall 161, for example by small depressions in the front wall 161.
- the second reflector plate 17 is arranged behind the first reflector plate 16 in the sound incidence direction 10, so that the front wall 172 of the second reflector plate 17 of the rear wall 162 of the first wall facing away from the transducers 12 Reflector plate 16 is facing.
- the intermediate layer 18 is sandwiched between the rear wall 162 of the first reflector plate 16 and the front wall 171 of the second reflector plate 17.
- the two reflector plates 16, 17 are metal plates and preferably made of aluminum.
- the intermediate layer 18 is preferably designed as a film and glued to the two reflector plates 16, 17, that is to say with the rear wall 162 of the first reflector plate 16 and the front wall 171 of the second reflector plate 17.
- the intermediate layer 18 serves to reduce the noise reaching the electroacoustic transducers 12, which is radiated by the antenna carrier 15 as a result of bending waves propagating therein.
- the bending waves are caused by vibrations in submarines or other vessels drive units and / or equipment.
- An exemplary embodiment of the construction of the intermediate layer 18 is described in DE 36 21 318 A1.
- the reflector plates 16, 17 on the along the Wandl ' row 11 seen length of the reflector 13 an irregular or non-uniform geometry.
- the rear wall 162 of the first reflector plate 16 is configured such that the distance a of the rear wall 162 from the front wall 161 varies along the length of the reflector 13. In the embodiment of FIG. 1, the distance a increases or decreases over the length of the reflector 13, so that the first reflector plate 16 has a wedge shape.
- the second reflector plate 17 has a complementary shape to the first reflector plate 16, ie the distance b between the front wall 171 and rear wall 172 of the second reflector plate 17 takes over the length of the reflector 13 in opposite directions to the distance a between the front and Rear wall 161, 162 of the first reflector plate 16 from or to, so that the two reflector plates 16, 17 supplement with the interposed intermediate layer 18 to a cuboid mass body 20.
- the course of the rear wall 162 of the first reflector plate 16 can be designed differently, wherein the increase or decrease of the distance a over the length can be continuous or discontinuous.
- the distance a of the rear wall 162 from the front wall 161 increases or decreases similarly to an e-function.
- the distance b from the front and rear walls 171, 172 decreases from one another to the same degree.
- An exponential course of the distance measure a is also possible.
- the rear wall 162 of the first reflector plate 16 is designed so that the distance a between the front and rear walls 161, 162 in stages increases or decreases and corresponding to the distance b between the front and rear walls 171, 172 of second reflector plate 17 decreases in steps or increases.
- the reflector 13 is formed as a spring-mass system and has, in addition to the formed from the two reflector plates 16, 17 with constrained intermediate layer 18 mass body 20 a soft-sound plate 21, which in the Hartumguss 14 is involved.
- the sound-absorbing plate 21 is arranged in the direction of sound incidence 10 behind the second reflector plate 17 at the rear wall 172 thereof. It is realized by an elastic soft material plate, wherein preferably a sheet of polyurethane foam is used as a soft material plate. To the less significant training of fashions in the soundproof plate 21, the soundproof plate 21 may also have an irregular geometry. in the
- Embodiment of FIG. 2 is the sound-soft plate 21 designed as a wedge, seen in the direction of sound incidence 10 thickness or height decreases over the reflector length.
- the wedge shape may also be chosen so that the thickness of the wedge increases over the length of the reflector 13. Another change in thickness of the plate 21 over the length of the reflector 13 is also possible.
- the schematically sketched in Fig. 4 underwater antenna is modified compared to the schematically sketched in Fig. 1 underwater antenna insofar as the second reflector plate 17 and the intermediate layer 18 are omitted and in turn executed as a mass-spring system reflector 13 only on its front wall 161, the transducer 12 supporting reflector plate 16 and the voltage applied to the rear wall 162 of the reflector plate 16, soft sound plate 21 in the form of a soft material plate z.
- B. of PU foam comprises.
- Transducer 12 and reflector 13 are in turn enclosed by the hard casing 14 made of polyurethane.
- the rear wall 162 of the reflector plate 16 is in turn formed so that the distance a between the flat front wall 161 and the rear wall 162 constantly changes over the length of the reflector 13.
- the rear wall 162 is provided with a row of teeth into which engages a complementary tooth row formed on the soft-sound plate 21.
- the rear wall 162 may also be designed differently. It is only essential that the distance a over the length of the reflector 13 varies continuously or discontinuously, for example, as shown in Fig. 4 is increased and reduced in stages over relatively short distances.
- Fig. 5 shows a detail of a schematic perspective view of the assembled from the plurality of transducer rows 11, planar underwater antenna, a so-called. Area array.
- the transducer rows 11 are vertically aligned and arranged horizontally next to each other and spaced apart. Each transducer row 11 is associated with a reflector 13 designed as described above with reference to FIG.
- each reflector 13 therefore has two reflector plates 16, 17 arranged one behind the other in the sound incidence direction 10, with intermediate layer 18 arranged therebetween.
- the geometry of the reflector plates 16, 17 is in turn uneven, in the embodiment for this purpose again a wedge shape of the two reflector plates 16, 17 is selected so that the distance a of the rear wall 162 of the front wall 161 of the first reflector plates 16 steadily increases or decreases and the Distance b of the rear wall 172 of the front wall 171 of the second reflector plate 17 complementary decreases or increases.
- the course of the rear wall 162 in adjacent reflectors 13 is designed in opposite directions. As shown in FIG. 4, in the foremost first reflector 13, the distance a of the rear wall 162 from the front wall 161 of the first reflector plate 16 decreases linearly from top to bottom in the vertical direction. In the adjacent reflector 13, which is shown pulled out for the purpose of illustration from the underwater antenna, the distance a of the rear wall 162 from the front wall 161 of the first reflector plate 16 in the vertical direction from top to bottom increases linearly.
- the course of the rear wall 162 of the first reflector plate 16 is again as in FIG first reflector 13, ie the distance a of the rear wall 162 from the front wall 161 of the first reflector plate 16 decreases in the vertical direction from top to bottom again.
- the distance b between the front and rear walls 171, 172 of the second reflector plate 17 changes. This also avoids larger path lengths with constant geometry in the horizontal direction and thus suppresses the formation of modes.
- sound-soft plates 21 may be integrally connected to each other, so be realized by means of a one-piece, continuous soft material plate.
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
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102006060795A DE102006060795B3 (de) | 2006-12-21 | 2006-12-21 | Unterwasserantenne |
| PCT/EP2007/009977 WO2008080451A2 (de) | 2006-12-21 | 2007-11-19 | Unterwasserantenne |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2104934A2 true EP2104934A2 (de) | 2009-09-30 |
| EP2104934B1 EP2104934B1 (de) | 2012-10-31 |
Family
ID=38664041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP07819860A Not-in-force EP2104934B1 (de) | 2006-12-21 | 2007-11-19 | Unterwasserantenne |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2104934B1 (de) |
| KR (1) | KR101221737B1 (de) |
| DE (1) | DE102006060795B3 (de) |
| WO (1) | WO2008080451A2 (de) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007053801B3 (de) * | 2007-11-12 | 2008-12-11 | Atlas Elektronik Gmbh | Unterwasserantenne |
| DE102008053606A1 (de) | 2008-10-20 | 2010-05-06 | Monika Sarkar | Gerät und Verfahren zum Suchen und Detektieren |
| DE102018222040A1 (de) * | 2018-12-18 | 2020-06-18 | Atlas Elektronik Gmbh | Unterwasserantenne mit einer netzartigen Schicht auf einem Schallempfänger-Körper |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2415832A (en) * | 1942-12-31 | 1947-02-18 | Bell Telephone Labor Inc | Radiation absorber |
| DE3621318A1 (de) * | 1986-06-26 | 1988-01-07 | Krupp Gmbh | Daempfungsschicht |
| FR2691596B1 (fr) * | 1992-05-22 | 1995-04-28 | Thomson Csf | Antenne acoustique sous-marine à capteur surfacique. |
| DE4339798A1 (de) * | 1993-11-23 | 1995-05-24 | Stn Atlas Elektronik Gmbh | Elektroakustische Wandleranordnung |
| DE102004038032A1 (de) | 2004-08-05 | 2006-02-23 | Atlas Elektronik Gmbh | Elektroakustische Wandleranordnung für Unterwasserantennen |
-
2006
- 2006-12-21 DE DE102006060795A patent/DE102006060795B3/de not_active Expired - Fee Related
-
2007
- 2007-11-19 KR KR1020097012370A patent/KR101221737B1/ko not_active Expired - Fee Related
- 2007-11-19 EP EP07819860A patent/EP2104934B1/de not_active Not-in-force
- 2007-11-19 WO PCT/EP2007/009977 patent/WO2008080451A2/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2008080451A2 * |
Also Published As
| Publication number | Publication date |
|---|---|
| KR101221737B1 (ko) | 2013-01-11 |
| DE102006060795B3 (de) | 2007-12-13 |
| WO2008080451A4 (de) | 2009-01-08 |
| WO2008080451A2 (de) | 2008-07-10 |
| EP2104934B1 (de) | 2012-10-31 |
| KR20090101179A (ko) | 2009-09-24 |
| WO2008080451A3 (de) | 2008-11-20 |
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