The underwater towed cable-array system has great practical importance in naval oceanographic and geophysical applications. In naval application the cable-array system is used for acoustic detection of a submerged target, wherein a series of hydrophones housed in a flexible cylindrical tube (referred to as an array) is connected at one end of the electromechanical or fibre-optic cable. The other end of this cable is wound on a winch drum, installed onboard a surface ship to tow the array. This paper reports on laboratory experiments conducted for the loop manoeuvre of underwater towed models of a cable-array system. The purpose of the experiment is to record the cable-array configuration in the vertical and azimuthal planes, and measure the tow-point tension while the tow-ship model is performing a full 360 Grad loop manoeuvre at different radii and speeds, in the calm waters of the wave-basin test facility. The test setup utilises an underwater video camera, TV, VCR and a ring-type strain-gauge load cell. The X, Y, Z coordinates of the cable-array system are obtained by measuring frozen displays of the experimental configuration. The coordinate and tension results obtained from experiments are compared with computed values.
Experimental investigations on loop manoeuvre of underwater towed cable-array system
Ocean Engineering ; 25 , 1 ; 85-102
1998
18 Seiten, 18 Bilder, 7 Tabellen, 6 Quellen
Aufsatz (Zeitschrift)
Englisch
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