Improved Maneuvering Forces and Autopilot Modelling for the ShipMo3D Ship Motion Library

Abstract

ShipMo3D is an object-oriented library with associated user applications for predicting ship motions in calm water and in waves. Motion predictions are available in both the frequency domain and the time domain. For predictions in the frequency domain, a ship is assumed to travel with quasi-steady speed and heading in waves. For predictions in the time domain, the ship can be freely maneuvering in either calm water or in waves. This report describes improvements to evaluation of hull maneuvering forces and rudder forces. There port also describes the implementation of a proportional-integral-derivative (PID) autopilot within ShipMo3D.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 2008
Accession Number
AD1005171

Entities

People

  • Kevin Mataggart

Tags

DTIC Thesaurus Topics

  • Abstracts
  • Angular Motion
  • Automatic Pilots
  • Bilge Keels
  • Classification
  • Coordinate Systems
  • Equations
  • Equations Of Motion
  • Frequency
  • Frequency Domain
  • Hard Copy
  • Integrals
  • Military Research
  • Naval Architecture
  • Security
  • Ship Motion
  • Time Domain

Readers

  • Marine Hydrodynamics
  • Parallel and Distributed Computing.
  • Robotics and Automation.