EQUATIONS OF MOTION FOR A TOWED BODY MOVING IN A VERTICAL PLANE

Abstract

Equations of motion are developed for a towed body moving in a plane defined by gravity and the fore-and-aft axis of the ship. Solution of the cross-coupled equations enables predictions to be made of towed body heave, surge, and pitch motions. The towline is approximated as a spring with one third of its mass added to the body at the towpoint. A discussion of computational techniques to compute masses, damping constants, and spring constants is also presented. Because of the number of terms in the equations for heave, surge, and pitch, the solutions have been programmed in FORTRAN IV.

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Document Details

Document Type
Technical Report
Publication Date
Jun 15, 1966
Accession Number
AD0635214

Entities

People

  • Jeffrey W. Schram
  • Kirk T. Patton

Organizations

  • Navy Underwater Sound Laboratory

Tags

Communities of Interest

  • Air Platforms
  • Counter WMD
  • Engineered Resilient Systems
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Abstracts
  • Bodies
  • Books
  • Center Of Gravity
  • Classification
  • Computations
  • Computer Programs
  • Computers
  • Contractors
  • Contracts
  • Equations
  • Equations Of Motion
  • Frequency
  • Resonant Frequency
  • Rhode Island
  • Towed Bodies
  • Water Masses

Fields of Study

  • Physics

Readers

  • Control Systems Engineering.
  • Marine Hydrodynamics