PLASTICS OBTURATOR FOR 105MM COMBUSTIBLE CARTRIDGE CASE.

Abstract

An obturator has been designed for the 105mm Combustible Cartridge Case for the T252 Gun. The obturator, injection molded of linear polyethylene, has performed satisfactorily in gun firing tests at all required temperatures and chamber pressure extremes. A method of molding the obturator has been developed which reduces considerably the number of rejects, the occurrence of stress cracks, and the tedency of the obturator to warp. A quality control procedure in which the molding parameters (pressures, temperatures, and times) are continually monitored is described. (Author)

Document Details

Document Type
Technical Report
Publication Date
Jul 22, 1965
Accession Number
AD0472321

Entities

People

  • Stanley P. Prosen
  • Walter T. Johnson

Organizations

  • Naval Ordnance Laboratory

Tags

DTIC Thesaurus Topics

  • Ammunition
  • Ammunition Components
  • Cartridge Cases
  • Combustible Cartridge Cases
  • Dielectric Polymers
  • Macromolecules
  • Materials
  • Molecules
  • Munitions
  • Plastics
  • Quality Control

Readers

  • Polymer Science and Engineering.
  • Regression Analysis.
  • ballistics.