Sound column and cylindrical antenna for a passive sonar device, which is used, such a sound column

摘要

The invention relates to antennas cylindrical for passive sonar. It consists in making the columns of the acoustic antenna of this type in two parts. The first part comprises the outer protective layer (101) and the intermediate layer (102) provided with reception hydrophones (110). The second part (201) comprises the absorbent layer (204). The reflecting layer of hard (103) is in the case may be included in the first or second part. The fixing means (205, 210) make it possible to connect these two parts and fixed on the structure of the antenna. It makes it possible to increase the mechanical strength of the columns of the acoustic, while facilitating their manufacture, without requiring the presence of a drum on the sea -