A hydrodynamic model of a two-part underwater manoeuvrable towed system is proposed in which a depressor is equipped with active horizontal and vertical control surfaces, and a towed vehicle is attached to the lower end of a primary cable. In such a system the towed vehicle can bei manoeured in both vertical and horizontal planes when it is towed at a certain velocity and the coupling effect of excitations at the upper end of the primary cable and disturbances of control manipulations to the towed vehicle can be reduced. In the model the hydrodynamic behaviour of an underwater vehicle is described by the six-degrees-of-freedom equations of motion for submarine simulations. The added masses of an underwater vehicle are obtained from the three-dimensional potential theory. The control suraface forces of the vehicle are determined by the wing theory. The results indicate that with relative simple control measures a two-part underwater manoeurable towed system enables the towed vehicle to travel in a wider range with a stable attidude. The method in this model gives an effective numerical approach for determining hydrodynamic characteristics of an underwater vehicle especially when little or no experimental data are available or when cost prohibit doing experiments for determining the data.


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    Title :

    Investigation on a two-part underwater manoeuvrable towed system


    Additional title:

    Untersuchungen an einem zweiteiligen manövrierbaren geschleppten Unterwassersystem


    Contributors:
    Wu, J. (author) / Chwang, A.T. (author)

    Published in:

    Ocean Engineering ; 28 , 8 ; 1079-1096


    Publication date :

    2001


    Size :

    18 Seiten, 11 Bilder, 12 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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