STUDY OF MECHANICAL PROPERTIES OF SOLID ROCKET PROPELLANT

Abstract

A program of study was initiated to develop methods for optimum grain design. The first phase, concerned improvements in measurement technique leading to better assessment of the binderoxidizer interaction under the multiaxial conditions expected in motors. The second phase, concerned the classification of behavior into several classes characterized by the degree of localization of dewetting with resultant localization of failure. The third phase, was concerned with the suitability of infinitesimal linear theory in predicting stresses and strains; reasonable agreement is found up to strains of the order of 10% above which significant dewetting and dilatation occur. The fourth phase, was concerned with the variability of failure behavior and a definite ordering of batches from good to bad appears to be effected by low rate tensile tests at different temperatures or by comparing low rate uniaxial elongations at failure with cracking in small tubular, case-bonded grains. The fifth phase, dealt with selection of a basic point of view; the Program Evaluation Research Task (PERT) system of network analysis appears to offer a suitable basis for study.

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Document Details

Document Type
Technical Report
Publication Date
May 30, 1961
Accession Number
AD0258883

Entities

People

  • James H. Wiegand

Organizations

  • Aerojet Rocketdyne Holdings

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Composite Materials
  • Elastic Properties
  • Material Degradation Processes
  • Materials
  • Materials Laboratories
  • Materials Testing
  • Measurement
  • Mechanical Properties
  • Mechanics
  • Modulus Of Elasticity
  • Physical Properties
  • Propellant Grains
  • Solid Propellants
  • Stress Analysis
  • Stress Strain Relations
  • Stresses
  • Test Methods

Readers

  • Rocket Propulsion.
  • Software Engineering
  • Structural Health Monitoring of Composite Structures.