Thermal Analysis of a Liquid Propellant Automatic Rifle.

Abstract

This effort was undertaken to determine chamber temperatures as a function of firing schedule for a liquid propellant (L. P. monopropellant NOS- 283) gun. The automatic gun analysed was a 6.0mm designed by the P.S.I. (Pulsepower Systems Incorporated) Company under Contract No. DAA-D05-73-C-0317. Initially, bore heat fluxes were calculated using experimentally measured surface temperatures. Based on an experimental 5-second burst, at a firing rate of 153 rounds per minute, the average calculated heat flux per foot was 6.29 BTU/FT-SEC. Using this heat flux, effective convection coefficients and gas temperature combinations were determined as the required boundary conditions. These boundary data were input into an implicit finite-difference solution to calculate transient chamber temperatures.

Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1974
Accession Number
ADA005587

Entities

People

  • Darrel M. Thomsen

Tags

DTIC Thesaurus Topics

  • Automatic
  • Automatic Guns
  • Automatic Rifles
  • Boundaries
  • Firing Rate
  • Guns
  • Heat Energy
  • Heat Flux
  • Liquid Propellants
  • Monopropellants
  • Propellants
  • Surface Temperature
  • Thermal Analysis

Fields of Study

  • Physics

Readers

  • Computational Fluid Dynamics (CFD)
  • Thermal Physics or Thermal Science.
  • ballistics.