Accession Number : AD0817713

Title :   EVALUATION OF LOW COST MATERIALS AND MANUFACTURING PROCESSES FOR LARGE SOLID ROCKET NOZZLES. ANALYSIS OF PERFORMANCE, NOZZLE NO. 8.

Descriptive Note : Technical rept.,

Corporate Author : AEROJET-GENERAL CORP SACRAMENTO CA

Personal Author(s) : Warga, J. J. ; Davis, H. O. ; DeAcetis, J. ; Lampman, J. A.

Report Date : 12 JUL 1967

Pagination or Media Count : 61

Abstract : This is the eighth in a series of reports describing the results of static test firings conducted to verify the performance of ablative nozzle components fabricated from low-cost material and/or using low-cost manufacturing processes. The throat approach, throat extension, and exit extension of nozzle 8 were fabricated from canvas duck phenolic; the entrance cap and throat inlet were fabricated from SNAP cured carbon fabric reinforced phenolic; and the throat was fabricated from a double-thick carbon fabric prepreg. Burn-through occurred at the thermocouple plug assembly of the throat approach, caused by improper bonding during assembly. Despite the burn-through, the excellent cost/performance effectiveness of the canvas duck was verified. Severe delamination was experienced in the throat inlet section, which had been wrapped parallel to the centerline. (Author)

Descriptors :   (*REINFORCED PLASTICS, TEXTILES), (*ROCKET NOZZLES, REINFORCED PLASTICS), (*NOZZLE THROATS, CAPTIVE TESTS), CARBON FIBERS, SILICON DIOXIDE, ASBESTOS, GRAPHITE, PHENOLIC PLASTICS, PAPER, COTTON TEXTILES, MANUFACTURING, MECHANICAL PROPERTIES, THERMAL EXPANSION, ABLATION, THERMAL PROPERTIES, COSTS, THERMODYNAMICS.

Subject Categories : Solid Propellant Rocket Engines

Distribution Statement : APPROVED FOR PUBLIC RELEASE