Accession Number:

AD0262379

Title:

A NEW APPROACH TO PLASTIC-MANDREL FABRICATION

Descriptive Note:

Technical publication

Corporate Author:

NAVAL ORDNANCE TEST STATION CHINA LAKE CA

Personal Author(s):

Report Date:

1961-06-01

Pagination or Media Count:

25.0

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.

Subject Categories:

  • Miscellaneous Materials
  • Plastics
  • Rockets
  • Rocket Engines

Distribution Statement:

APPROVED FOR PUBLIC RELEASE