Thermal Analysis for a 37-MM Gun Chamber With Ceramic Nozzles

Abstract

The 37-mm interior ballistics chamber is primarily a test bed to evaluate new propellant properties and their effects on gun systems. Experiments were conducted examining the properties of various ceramics under realistic interior ballistic loadings. The thermal response during the launch will cause stresses due to the large temperature gradient and coefficient of thermal expansion mismatch between the ceramic nozzle and steel gun chamber. In the first step of the investigation, it is essential to determine the thermal stress created. This report details the finite-element model used to predict the thermal response of the chamber and selected ceramic nozzle samples to better understand the sources or modes of failure observed in chamber firings. These results are essential in guiding the selection of nozzle materials and research into the use of ceramics in a gun chamber.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 2005
Accession Number
ADA444069

Entities

People

  • James Garner
  • Paul Conroy
  • Xiaogang Huang

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Ceramic Materials
  • Coefficients
  • Failure Mode And Effect Analysis
  • Finite Element Analysis
  • Gun Chambers
  • Heat Capacity
  • Heat Transfer
  • Materials
  • Propellants
  • Stresses
  • Temperature Gradients
  • Test Beds
  • Thermal Analysis
  • Thermal Conductivity
  • Thermal Expansion
  • Thermal Stresses
  • Three Dimensional

Fields of Study

  • Physics

Readers

  • Rocket Propulsion.
  • Thermal Physics or Thermal Science.