Cooldown and Motor Firing Thermostructural Analysis of a 7.0 Inch Diameter Pyrolytic Graphite Insert

Abstract

A detailed thermochemical and thermostructural analysis was performed on a seven inch diameter nozzle throat insert composed of a pyrolytic graphite coating on an AGSR substrate. The analysis considered an environment produced by a solid rocket propellant at a chamber pressure of 1000 psia for a duration of sixty seconds. The analysis showed the effect on the thermostructural predictions, including plasticity effects, of including grooves in the substrate, and of the sensitivity of the stresses on the backside constraint. In addition, the predictions were made for both the cooldown during the manufacturing process and for various times during the solid rocket motor firing.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1973
Accession Number
AD0771781

Entities

People

  • Duane L. Baker
  • Joe E. Davis
  • William S. Bonnett

Tags

Communities of Interest

  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Ablative Materials
  • Boundary Layer
  • Computer Programs
  • Geometry
  • Heat Transfer
  • Isotherms
  • Material Degradation Processes
  • Measurement
  • Mechanical Working
  • Modulus Of Elasticity
  • Plastic Properties
  • Pressure Distribution
  • Shear Modulus
  • Shear Stresses
  • Stress Analysis
  • Stress Strain Relations
  • Tensile Strength

Readers

  • Rocket Propulsion.
  • Structural Dynamics.