The Influence of Muzzle Gasdynamics upon the Trajectory of Fin- Stabilized Projectiles

Abstract

An analysis of flow encountered by fin-stabilized projectiles during launch is presented. Loading exerted by propellant gases upon fin surfaces both in-bore and during transit of the muzzle jet are considered. The in-bore flow is modeled as a one-dimensional, unsteady expansion fan, while the muzzle jet flow is calculated using the method of characteristics. Fin loadings in these flows are approximated by two-dimensional, thin airfoil theory. The present analysis is shown to provide a better representation of loadings near the muzzle than can be obtained from previous analyses.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1975
Accession Number
ADB005379

Entities

People

  • Edward M. Schmidt
  • Kevin S. Fansler

Organizations

  • Ballistic Research Laboratory

Tags

DTIC Thesaurus Topics

  • Blast
  • Coordinate Systems
  • Flow
  • Flow Fields
  • Geometry
  • Jet Flow
  • Jet Propulsion
  • Mach Number
  • Mathematical Analysis
  • Method Of Characteristics
  • Military Research
  • Physical Properties
  • Projectiles
  • Propellants
  • Steady State
  • Test And Evaluation
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Fluid Mechanics and Fluid Dynamics.
  • ballistics.