Machinery and underwater noise control: research and consultancy by TNO Institute of Applied Physics, Delft
article
Underwater noise plays an ever increasing role in naval operational activities. The threat of modern weapons, such as the acoustic mines and torpedoes, but above all the performance of sophisticated passive and active sonar systems, irrefutably lead to stringent staff requirements with respect to ship generated underwater noise. Specifications describing maximum acceptable levels both for underwater radiated noise and for self-noise nowadays belong to the category of important operational requirements for modern naval ships. As a consequence this has its impact on naval design and building. It is the major task of the acoustic consultant to provide the relevant expertise and packages of data as a basis for the decisions to obtain a well balanced result with respect to underwater noise. Major decisions may have a vital impact on the ship structure, the machinery selection and/or on the general arrangement. The selection in the design stage of effective, 'value-for-money' and reliable solutions is of utmost importance. This requires among other things the use of prediction schemes, capable of producing accurate and reliable results already in the design stage of the ship. The Ship Acoustics Department of the TNO lnstitute of Applied Physics (TPD Technisch Physische Dienst) in Delft is active in many aspects of research and consultancy on ship noise control with extensive experience over more than 30 years now. Some of the activities in one of the key fields, namely the machinery noise control, are described in general in the following paper.
TNO Identifier
246401
Source
Maritime Defence, the Netherlands naval defence industry, 14(10), pp. 333-335.
Collation
3 p.
Pages
333-335
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