Linear Theory of a Dual-Spin Projectile in Atmospheric Flight

Abstract

The equations of motion for a dual-spin projectile in atmospheric flight are developed and subsequently utilized to solve for angle of attack and swerving dynamics. A combination hydrodynamic and roller bearing couples forward and aft body roll motions. Using a modified projectile linear theory developed for this configuration, it is shown that the dynamic stability factor, S(g), and the gyroscopic stability factor, S(g) are altered compared to a similar rigid projectile, due to new epicyclic fast and slow arm equations. Swerving dynamics including aerodynamic jump are studied using the linear theory.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 2000
Accession Number
ADA375201

Entities

People

  • Allen A. Peterson
  • Mark F. Costello

Organizations

  • Oregon State University

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Aerodynamic Forces
  • Angular Motion
  • Bearings
  • Computational Science
  • Differential Equations
  • Dynamics
  • Equations
  • Equations Of Motion
  • Mechanical Engineering
  • Military Research
  • Munitions
  • Projectile Cases
  • Projectiles
  • Roller Bearings
  • Standards
  • Two Dimensional
  • Weapons

Fields of Study

  • Physics

Readers

  • Control Systems Engineering.
  • Explosive Engineering.