Accession Number:

AD1004971

Title:

The Interaction Dynamics of a Semi-Submersible Towing a Large Towfish

Descriptive Note:

Conference Paper

Corporate Author:

Defence Research Establishment Atlantic Dartmouth, Nova Scotia Canada

Personal Author(s):

Report Date:

1998-05-29

Pagination or Media Count:

10.0

Abstract:

The interactions between a semi-submersible drone and its large towfl.sh, where the tension in the tow cable joining them is about 20 of the weight of the drone, are investigated. Since standard cable dynamics modelling computer programs do not model tow-vehicletow-body interactions, an iterative approach to calculating these interactions. is developed. Drone motions are modeled with a non-linear, six degree-of-freedom, underwater vehicle simulation incorporating pre-defined, three component, time dependent tow cable tensions applied at the tow point. Cable dynamics are modelled with the non-linear, finite segment, cabletowfish dynamic simulator DYNTOCABS, which accepts pre-defined tow-point accelerations as time varying boundary conditions. The interactions are calculated by iterating between these two programs. The method is applied to simple turning maneuvers important to mine hunting operations.

Subject Categories:

  • Acoustic Detection and Detectors

Distribution Statement:

APPROVED FOR PUBLIC RELEASE