A NEW APPROACH TO PLASTIC-MANDREL FABRICATION

Abstract

The development of an economical process for fabricating plastic mandrels for use in solidpropellant rocket motors is described. Several types of mandrels were produced from plastic materials for new solid-propellant rocket motors. Tests were performed to determine the shrinkage of the plastic mandrels, tensile strength of various formulations of plastic, surface roughness of plastic mandrels as compared to the master mandrels, thermal conductivities of the plastic formulations, and bond strengths of a silicone-elastomer coating as a mold-release agent on plastic mandrels. Satisfactory mandrels for motors up to 24 in. in diameter and 84 in. in length can be made. Where several mandrels are required, producing plastic mandrels is economically feasible. A method for coating plastic and fabricated aluminum mandrels, not involving the use of any materials leaving a residual grease or wax coating, was developed.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1961
Accession Number
AD0262379

Entities

People

  • Henry T. Sampson
  • Ray A. Miller

Organizations

  • Naval Air Weapons Station China Lake

Tags

DTIC Thesaurus Topics

  • Conductivity
  • Diameters
  • Epoxy Resins
  • Fabrication
  • Jet Propulsion
  • Machining
  • Materials Laboratories
  • Materials Processing
  • Materials Science
  • Munitions
  • Physical Properties
  • Plastic Explosives
  • Production
  • Solid Propellants
  • Surface Roughness
  • Tensile Strength
  • Thermal Conductivity

Fields of Study

  • Physics

Readers

  • Mechanical Engineering/Mechanics of Materials.
  • Metallurgy
  • Rocket Propulsion.