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

Hiroaki Miura, Akiko Matsuo

Research output: Contribution to journalArticle

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
Pages (from-to)71-76
Number of pages6
JournalMaterials Science Forum
Volume566
Publication statusPublished - 2008

Fingerprint

Projectiles
numerical analysis
Numerical analysis
projectiles
friction
Friction
tubes
interior ballistics
pressure chambers
quasi-steady states
two phase flow
vacuum chambers
Ballistics
Two phase flow
Shock waves
shock waves
simulation
Gases
histories
gases

Keywords

  • Interior ballistics
  • Solid propellant
  • Two-phase flow

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Numerical analysis of projectile-launch tube wall friction effects on projectile acceleration in single-stage gun. / Miura, Hiroaki; Matsuo, Akiko.

In: Materials Science Forum, Vol. 566, 2008, p. 71-76.

Research output: Contribution to journalArticle

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