The Effect of Processing Variables on the 'Internal Slip Flow' of a Triple Base Gun Propellant Dough

Abstract

The rheological behaviour of triple base gun propellant doughs of N and NQ types was measured with an extrusion rheometer at temperatures of 20C, 30C and 45C, using slit and capillary dies. The propellant doughs were made from two grades of nitrocellulose, and from picrite obtained from two sources. Acetone/water mixtures and acetone/ethanol mixtures were used as processing solvents. Most of the processing variables had little effect on flow behaviour. It as found that a type of internal slip occurred in the dough at a shear stress of about 60 kPa. and this had a significant effect on flow behaviour. Australia.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1988
Accession Number
ADA205892

Entities

People

  • A. T. Starks
  • R. C. Warren

Tags

DTIC Thesaurus Topics

  • Extrusion
  • Gun Propellants
  • Materials
  • Materials Laboratories
  • Materials Processing
  • Materials Science
  • Measurement
  • Mechanical Properties
  • Microvessels
  • Munitions
  • Propellants
  • Shear Stresses
  • Standards
  • Stresses
  • Triple Base Propellants
  • Viscosity
  • Weapons

Readers

  • Fluid Dynamics.
  • Mechanical Engineering/Mechanics of Materials.
  • Rocket Propulsion.