The Modeling of Boattail Intrusion in a Lumped Parameter Interior Ballistic Code

Abstract

This report extends both the traditional Lagrange gradient equation, and the chambrage gradient equation, to account for boattail intrusion. It compares the analytic pressure gradient with that predicted by XKTC and assesses the extent to which the effects of boattail intrusion account for the differences in boattail predictions. The gradient equation, with boattail addition, captures qualitatively, if not quantitatively, the effects for normal c/m's, although some questions remain about the physics of the gradient model.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1993
Accession Number
ADA270702

Entities

People

  • Frederick W. Robbins
  • Robert T. Puhalla
  • Taquan S. Stewart

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Resistance
  • Artillery
  • Ballistics
  • Base Pressure
  • Burning Rate
  • Combustion
  • Energetic Materials
  • Equations
  • Heat Transfer
  • Interior Ballistics
  • Military Research
  • Muzzle Velocity
  • Pressure Distribution
  • Pressure Gradients
  • Propellant Grains
  • Propellants
  • Specific Heat

Readers

  • Computational Modeling and Simulation
  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • ballistics.