Calculated Gun Interior Ballistic Effects of In-Depth Burning of VHBR (Very High Burning Rate) Propellant

Abstract

Very High Burning Rate (VHBR) propellants exhibit sufficiently high burning rates to motivate consideration of a charge consisting of single- perforated monolithic grain. If the outside surfaces, including the ends, of such a grain were inhibited, the result would be a highly progressive grain whose performance could be quite attractive. The VHBR picture is complicated, however, by the fact that some of these propellants seem to burn not only on the surface but also at some depth into the surface, so that they have an extended reaction zone. This paper details the development of a lumped parameter interior ballistic code which permits an examination of the ballistic effects of in-depth propellant combustion. It is concluded that if in-depth burning occurs in a reproducible manner, and if the grain is properly designed so that it is fully burned at the time of shot ejection, then the performance improvement over that expected from a conventional charge for the same gun is significant. Monolithic charge, In-depth burning.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1989
Accession Number
ADA214359

Entities

People

  • David L. Kruczynski
  • Frederick W. Robbins

Organizations

  • Ballistic Research Laboratory

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Resistance
  • Ammunition
  • Artillery
  • Burning Rate
  • Combustion
  • Engineering
  • Equations
  • Heat Loss
  • Heat Transfer
  • Heat Transfer Coefficients
  • Jet Propulsion
  • Military Research
  • Munitions
  • Pressure Gradients
  • Propellant Grains
  • Propellants
  • Specific Heat

Readers

  • Explosive Engineering.
  • Rocket Propulsion.
  • Systems Analysis and Design