A Preliminary Study of Wear in the Solid-Armature Railgun

Abstract

A model previously developed to investigate current and heat transport in solid-armature railguns is extended. The 2-dimensional model involves the numerical solution of coupled Maxwell and heat-transport equations in both the armature and rails of the railgun. The principal extensions include the development of a general transformation which maps an armature of fairly arbitrary shape into a rectangular computational region, and the inclusion of melting within the appropriate governing equations. Two specific applications of the theory are then discussed: analysis of an armature under experimental study at the Army Research Laboratory and preliminary calculations concerning the entrainment of armature material on the surfaces of the rails.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1997
Accession Number
ADA339083

Entities

People

  • A. Zielinski
  • Jessica M. Powell

Organizations

  • University of Texas at Austin

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Boltzmann Equation
  • Current Density
  • Differential Equations
  • Electromagnetic Guns
  • Energy
  • Entrainment
  • Equations
  • Geometry
  • Heat Energy
  • Heat Of Fusion
  • Heat Transfer
  • Isotherms
  • Latent Heat
  • Materials
  • Military Research
  • Three Dimensional
  • Two Dimensional

Readers

  • Combustion and Flow Dynamics.
  • Computational Fluid Dynamics (CFD)
  • ballistics.