Dynamic Stability of Positively Buoyant Submersibles: Vertical Plane Solutions

Abstract

This thesis analyzes the dynamic stability of positively buoyant submersibles. Six degree-of-freedom equations of motion are used to compute steady state behavior with motion restricted to the vertical plane. Steady state solutions are analyzed for various conditions of buoyancy including changes in (1) the amount of excess buoyancy, (2) the location of the center of buoyancy, (3) the location of the center of gravity, as well as (4) the deflection of bow and stern planes. The equations of motion are then linearized around these steady state solutions to predict dynamic response in the vertical plane. The stability of each solution is then determined by eigen value analysis. The study then expands the analysis to include all six degrees of freedom (i.e., include stability analysis in the horizontal plane). Finally, numerical integration methods are used to verify the results.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1991
Accession Number
ADA245605

Entities

People

  • Brian D. Mckinley

Organizations

  • Naval Postgraduate School

Tags

DTIC Thesaurus Topics

  • Center Of Gravity
  • Classification
  • Computer Programs
  • Deflection
  • Dynamic Response
  • Equations Of Motion
  • Euler Angles
  • Gravity
  • Mechanical Engineering
  • Numerical Integration
  • Security
  • Simulations
  • Steady State
  • Submersibles
  • Underwater Vehicles
  • United States
  • Vehicles

Fields of Study

  • Engineering

Readers

  • Control Systems Engineering.
  • Fluid Dynamics.