Numerical analysis of projectile-launch tube wall friction effects on projectile acceleration in single-stage gun

Hiroaki Miura, Akiko Matsuo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The effects of the friction between the projectile and launch-tube wall in a single-stage gun are examined by the interior ballistics simulations. The solid/gas two-phase flow code for two-dimensional axisymmetric calculation is used in the simulations. In this study, one-dimensional quasi-steady-state elastic relations are applied to the projectile in the estimation of the friction force. The calculation method is validated by the comparison of the simulated results with the experimental data such as the histories of the breech pressure and the projectile acceleration. The simulated results reveal that the impact of the shock waves to the base increases the friction force acting on the projectile. The large friction force in the tight fit case decelerates the projectile, consequently intensifying the chamber pressure. The muzzle velocity decreases with the increase of the projectile diameter, and this appears strongly in the low chamber pressure case.

Original languageEnglish
Title of host publicationExplosion, Shock Wave and Hypervelocity Phenomena in Materials II - Selected, peer reviewed papers from the 2nd International Symposium on Explosion, Shock Wave and Hypervelocity Phenomena (ESHP-2)
PublisherTrans Tech Publications Ltd
Pages71-76
Number of pages6
ISBN (Print)0878494650, 9780878494651
Publication statusPublished - 2008 Jan 1
Event2nd International Symposium on Explosion, Shock Wave and Hypervelocity Phenomena, ESHP-2 - Kumamoto, Japan
Duration: 2007 Mar 62007 Mar 9

Publication series

NameMaterials Science Forum
Volume566
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Conference

Conference2nd International Symposium on Explosion, Shock Wave and Hypervelocity Phenomena, ESHP-2
CountryJapan
CityKumamoto
Period07/3/607/3/9

Keywords

  • Interior ballistics
  • Solid propellant
  • Two-phase flow

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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