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Depth Enhancement of an Underwater Towed System using Hydrodynamic Depressor
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Depth Enhancement of an Underwater Towed System using Hydrodynamic Depressor
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Journal Article
Depth Enhancement of an Underwater Towed System using Hydrodynamic Depressor
2016
Overview
The underwater towed system described here consists of tow cables, a towed body, an acoustic module and tail rope towed behind a surface ship. The required depth at a particular speed of the towing ship is obtained by paying out specified length of cable from the winch. However the excessive drag forces on the various components of the towed system results in impractically large values of cable length, especially at higher speeds. A hydrodynamic depressor is designed to improve the depth performance. The design is evolved based on numerical analysis and towing tank tests. Estimation of depth attained is carried out based on steady state theory of tow cables. Validation of the numerical analysis results is carried out through field evaluation of depressor performance during sea trial of the towed system.
Publisher
Defence Scientific Information & Documentation Centre
Subject
