A Lumped-Parameter Interior Ballistic Computer Code Using the TTCP (The Technical Cooperation Program) Model

Abstract

IBRGA is a simple FORTRAN code for making computer simulations of the interior ballistic performance of guns. It can be run on computers as small as an IBM PC. It is based on the lumped-parameter mathematical model of interior ballistics recently adopted by the The Technical Cooperation Program (TTCP), and therefore it permits validation of that model. While the TTCP model is limited to a Lagrange pressure gradient equation, IBRGA also permits using a gradient equation which takes into account the chambrage of the gun. Calculations with IBRGA agree with the results of gun firings, which show higher muzzle velocities for guns with chambrage than for guns with chambers of constant diameter. IBRGA is used to show gun optimizations performed with Lagrange gradients for guns without chambrage lead to nearly-optimal propellant grain dimensions for use in guns with chambrage. Interior ballistics, Modeling, Guns, Gradient equation.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1988
Accession Number
ADA203295

Entities

People

  • Frederick W. Robbins
  • Timothy S. Raab

Organizations

  • Ballistic Research Laboratory

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Resistance
  • Burning Rate
  • Combustion
  • Engineering
  • Equations
  • Heat Capacity
  • Heat Energy
  • Heat Transfer
  • Heat Transfer Coefficients
  • Interior Ballistics
  • Jet Propulsion
  • Military Research
  • Munitions
  • Muzzle Velocity
  • Pressure Gradients
  • Projectiles
  • Propellant Grains

Fields of Study

  • Physics

Readers

  • Computational Modeling and Simulation
  • Operations Research
  • ballistics.