• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a submarine structure (1) comprising a thick inner shell (2) and a thin outer shell (3), with sonar receiving antenna means being placed on the sides of said structure. The structure is characterised in that the sonar receiving antenna means comprise receiver means (4) secured to the outer surface of the thin shell (3) and sound baffle means (5) secured to the inner surface of the thin shell (3) opposite the receiver means (4).
    公开号:AU2013220310A1
    申请号:U2013220310
    申请日:2013-02-15
    公开日:2014-09-04
    发明作者:Christian Audoly；Francois Reynard
    申请人:DCNS SA；
    IPC主号:B63G8-39
    专利说明:
    1 Submarine structure comprising a sound baffle, for the integration of a sonar receiving antenna on a thin shell 5 The present invention relates to a submarine structure comprising a sound baffle, for the integration of a sonar receiving antenna on a thin shell. More particularly, the invention relates to a submarine structure that includes a thick inner shell, called "strong" shell, and a thin outer shell, with sonar receiving antenna means being placed on the sides thereof. 10 Submarine structures equipped with this type of antenna are already known from the state of the art. Thus, reference may for example be made to document FR 2,720,590, in particular to figure 1 of that document, which describes an acoustic side antenna for submarines. The acoustic antenna is placed on the thick shell of a submarine and comes into 15 contact with the water by means of openings formed in the thin shell of that submarine. The sensors of the antenna are fastened to the surface of a metal plate forming a hard reflector, and become flush with the thin shell. Absorbing reflectors of the soft type are fastened on the inner surface of the metal plate, and absorbing reflectors made from flexible tubes embedded in a soft matrix are fastened on the outer surface of the thick shell. 20 The heterogeneity and thickness of such a structure make it complicated to implement, which causes a high manufacturing cost. Furthermore, the acoustic antenna described in this document is designed to be incorporated on a thick shell, and cannot be incorporated on a thin shell due to its complexity and its thickness. 25 The aim of the invention is to resolve these drawbacks and to propose a submarine structure comprising a sound baffle, for the integration of a sonar receiving antenna on a thin shell that has a simple design and is inexpensive to implement. To that end, the invention relates to a submarine structure including a thick inner shell and a thin outer shell, with sonar receiving antenna means being placed on the sides of said 30 structure, characterized in that the sonar receiving antenna means comprise receiver means secured to the outer surface of the thin shell and sound baffle means secured to the inner surface of the thin shell facing the receiver means. According to other features of the invention, considered alone or in combination: - the sound baffle means include a composite structure comprising at least one 35 plate forming a hard reflector and a sound barrier forming a soft reflector; 2 - stiffeners are positioned on the inner surface of the thin shell, and the sound barrier means are distributed in modules positioned between the stiffeners of the thin shell; - the hard reflector plate is a metal plate; 5 - the hard reflector plate comprises a layer of viscoelastic metal; - the hard reflector plate is fastened on the inner surface of the thin shell and the sound barrier forming the soft reflector is fastened on said plate; - the hard reflector plate has a thickness comprised between 5 and 50 mm; - the soft reflector sound barrier has a thickness comprised between 20 and 100 10 mm; - the sound baffle means are fastened on the thin outer shell using means for gripping against the latter; - the sound baffle means are fastened on the thin outer shell using gluing means. The invention will be better understood using the following description, provided 15 solely as an example and done in reference to the appended drawing showing a cross sectional view of a submarine structural part incorporating a sonar receiving antenna according to the invention. This figure shows a submarine structural part designated by general reference 1. Traditionally, this submarine structure 1 comprises a thick inner shell designated by 20 general reference 2 and a thin outer shell designated by general reference 3. According to the invention, the outer surface of the thin outer shell 3 is provided with sonar receiving antenna means. These sonar receiving antenna means comprise receiver means designated by general reference 4. In the illustrated example, the receiver means 4 include antenna modules distributed 25 along the outer surface of the thin shell 3 on the sides of the submarine structure, and in which sound sensors are for example placed traditionally. As also illustrated, the sonar receiving antenna means include, on the inner surface of the thin shell 3, sound baffle means designated by general reference 5, positioned across from the receiver means 4. 30 These sound baffle means 5 include a composite structure comprising at least one plate forming a hard reflector, designated by general reference 6, and a sound barrier forming a soft reflector, designated by general reference 7. Stiffeners, designated by general reference 8, can also be positioned on the inner surface of the thin shell 3.
    3 In the illustrated example, the stiffeners 8 are regularly distributed on said inner surface of the thin shell 3, and the sound barrier means 5 are distributed in modules positioned between the stiffeners 8 of the thin shell 3. Advantageously, the hard reflector plate 6 is a metal plate. 5 Preferably, the plate 6 is made from the same material as that making up the thin shell 3. Generally, any material with a density significantly higher than that of water is suitable to form the plate 6. The plate 6 may, for example, comprise a layer of viscoelastic metal. This type of 10 structure makes it possible to increase the structural damping of the device, and therefore to reduce the disruptive noise that may limit the performance of the sound baffle means 5. In the example illustrated in the appended figure, the hard reflector plate 6 is fastened on the inner surface of the thin shell 3, and the sound barrier 7 forming the soft reflector is fastened on the plate 6. 15 It will be noted that the hard reflector plate 6 has a thickness comprised between 5 and 50 mm. It will also be noted that the soft reflector sound barrier 7 has a thickness comprised between 20 and 100 mm. Generally, the thicknesses of the hard reflector plate 6 and the soft reflector sound 20 barrier 7 are determined based on the frequency range for which the performance of the sound baffle means 5 is optimized. The soft reflector sound barrier 7 is for example made from a material having an acoustic impedance much lower than that of water. In general, the soft reflector sound barrier 7 is made from a material having a strong impedance break with water. 25 Lastly, the sound baffle means 5 are fastened on the thin outer shell 3 using means for gripping against the latter. Alternatively, the sound baffle means 5 are fastened on the thin outer shell 3 using gluing means. One can then see that such a structure makes it possible to resolve the various 30 aforementioned issues. Indeed, the participation of the thin shell in the thickness of the sound baffle means 5 makes it possible to limit the excess mass to what is strictly necessary relative to the solutions described in the aforementioned prior art. Furthermore, this structure does not create any external protuberance that could 35 disrupt the hydrodynamics of the submarine.
    4 Lastly, the presence of the sound baffle means 5 makes it possible to provide a correct sound response by the receiver means 4. Still other embodiments may of course also be considered. Thus, such a structure could be assembled during the construction of a new 5 submarine or incorporated into a submarine being refurbished, using means for example with screws or other means for gripping it against the thin shell, or using gluing means.
    权利要求:
    Claims (10)
    [1] 1. A submarine structure (1) including a thick inner shell (2) and a thin outer shell (3), with sonar receiving antenna means being placed on the sides of said structure, 5 characterized in that the sonar receiving antenna means comprise receiver means (4) secured to the outer surface of the thin shell (3) and sound baffle means (5) secured to the inner surface of the thin shell (3) facing the receiver means (4).
    [2] 2. The structure (1) according to claim 1, characterized in that the sound baffle 10 means (5) include a composite structure comprising at least one plate (6) forming a hard reflector and a sound barrier (7) forming a soft reflector.
    [3] 3. The structure (1) according to claim 1 or 2, characterized in that stiffeners (8) are positioned on the inner surface of the thin shell (3), and in that the sound barrier 15 means (5) are distributed in modules positioned between the stiffeners (8) of the thin shell (3).
    [4] 4. The structure (1) according to claim 2 or 3, characterized in that the hard reflector plate (6) is a metal plate. 20
    [5] 5. The structure (1) according to any one of claims 2 to 4, characterized in that the hard reflector plate (6) comprises a layer of viscoelastic metal.
    [6] 6. The structure (1) according to any one of claims 2 to 5, characterized in that the 25 hard reflector plate (6) is fastened on the inner surface of the thin shell (3) and in that the sound barrier (7) forming the soft reflector is fastened on said plate (6).
    [7] 7. The structure (1) according to any one of claims 2 to 6, characterized in that the hard reflector plate (6) has a thickness comprised between 5 and 50 mm. 30
    [8] 8. The structure (1) according to any one of claims 2 to 7, characterized in that the soft reflector sound barrier (7) has a thickness comprised between 20 and 100 mm. 6
    [9] 9. The structure (1) according to any one of the preceding claims, characterized in that the sound baffle means (5) are fastened on the thin outer shell (3) using means for gripping against the latter. 5
    [10] 10. The structure (1) according to any one of claims 1 to 8, characterized in that the sound baffle means (5) are fastened on the thin outer shell (3) using gluing means.
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    同族专利:
    公开号 | 公开日
    EP2814723A1|2014-12-24|
    ES2581289T3|2016-09-05|
    MY167419A|2018-08-27|
    CA2864412A1|2013-08-22|
    FR2987028B1|2014-04-04|
    AU2013220310B2|2016-09-29|
    FR2987028A1|2013-08-23|
    IN2014DN06560A|2015-05-22|
    CA2864412C|2020-03-24|
    EP2814723B1|2016-04-20|
    WO2013121007A1|2013-08-22|
    PL2814723T3|2016-10-31|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US5420825A|1982-08-31|1995-05-30|The United States Of America As Represented By The Secretary Of The Navy|Noise control composite|
    FR2691596B1|1992-05-22|1995-04-28|Thomson Csf|Acoustic underwater antenna with area sensor.|
    FR2720590B1|1994-05-31|1996-06-28|Thomson Csf|Absorbent passive acoustic antenna.|
    法律状态:
    2017-02-02| FGA| Letters patent sealed or granted (standard patent)|
    优先权:
    申请号 | 申请日 | 专利标题
    FR1251494||2012-02-17||
    FR1251494A|FR2987028B1|2012-02-17|2012-02-17|SUBMARINE STRUCTURE COMPRISING AN ACOUSTIC BAFFLE FOR THE INTEGRATION OF A SONAR RECEPTION ANTENNA ON A THIN HULL|
    PCT/EP2013/053095|WO2013121007A1|2012-02-17|2013-02-15|Submarine structure comprising a sound baffle, for the integration of a sonar receiving antenna on a thin shell|
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