RESEARCH ON THE RESPONSE OF REINFORCED SOLID PROPELLANTS.

Abstract

Research on the structural behavior of wire-reinforced propellants is reported. Values for certain orthotropic material constants which should be useful in grain design have been determined experimentally. The effects of winding angle and wire modulus on the material response were investigated. A problem in delamination of thick-wall wire-reinforced grains was encountered during another Navy program. Various means were therefore investigated in the course of this program to eliminate delamination. Use of an ambient-cure matrix to eliminate thermal stress during the cure cycle and two approaches to adding radial wire reinforcing were explored briefly. The most promising approach appeared to be through use of the new ambient-cure matrix which would be specifically tailored to reinforced propellants. The structural response of an aluminum wire-reinforced grain that was designed to demonstrate deep submergence rocket launch applications was obtained. This grain which embodied a new concept in burning rate control, a perforated inner core, withstood 1920-psi external pressure before complete collapse in the buckling mode. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Nov 30, 1967
Accession Number
AD0385673

Entities

People

  • A. A. Caputo
  • B. H. Minnich
  • E. L. Alexander

Organizations

  • Rocketdyne

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Composite Materials
  • Composite Propellants
  • Fabrication
  • Instrumentation
  • Materials
  • Materials Processing
  • Materials Testing
  • Measurement
  • Mechanical Properties
  • Mechanical Working
  • Mechanics
  • Propellants
  • Solid Propellants
  • Stresses
  • Synthetic Rubber
  • Thick Walls
  • Thin Walls

Readers

  • Mechanical Engineering/Mechanics of Materials.
  • Rocket Propulsion.
  • Systems Analysis and Design