CRYOGENIC STRETCH-FORMING OF SOLID PROPELLANT ROCKET CASES.

Abstract

The effect of closer die tolerances and additional overpressure on the out-of-roundness of the Pershing subscale cases was examined and determined to significantly reduce the tolerances on the vessel. The effect of the addition of skirts and end rings to stretched Pershing subscale vessels on the room temperature strength level was determined. No significant decrease in yield strength of the vessel was noted. Some problems in the spinning of the components for the full scale preform were encountered and overcome. Design analysis of the stresses encountered during the stretching of both the subscale and projected full scale cases indicated marginal stresses in the vicinity of the juncture of the aft cone and the aft cylinder of the preform. Design of a preform for a very high strength subscale case was started. (Author)

Document Details

Document Type
Technical Report
Publication Date
May 31, 1964
Accession Number
AD0602774

Entities

People

  • R. H. Alper

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Energetic Materials
  • Materials
  • Materials Processing
  • Mechanical Properties
  • Mechanical Working
  • Overpressure
  • Propellants
  • Rocket Engine Cases
  • Rockets
  • Solid Propellants
  • Stretch Forming
  • Yield Strength

Readers

  • Aerodynamics/Aeronautics.
  • Metallurgy
  • Structural Dynamics.