Accession Number:

ADB017286

Title:

Low Cost Motor Demonstration Program. Volume 1

Descriptive Note:

Interim rept. Jun 1975-Nov 1976 on Phase 1

Corporate Author:

MORTON THIOKOL INC HUNTSVILLE AL HUNTSVILLE DIV

Personal Author(s):

Report Date:

1977-02-01

Pagination or Media Count:

589.0

Abstract:

The program objective is to identify materials, designs, and manufacturing techniques that will significantly reduce the cost of tactical rocket motors in production and to demonstrate in pilot production quantities the validity of such identities. Phase I evaluated design options for each motor component through tests and analyses. Eleven full-scale four-inch diameter motors and ten sub-scale nozzle material evaluation motors were static tested. A low cost grain manufacturing technique of pour casting deaerated propellant without benefit of vacuum was evaluated by manufacturing two motors. Technology in ambient-temperature 80 F propellants developed under AFRPL contract was satisfactorily transfered and combined with in-house technology to produce improved propellant. Components and other manufacturing techniques evaluated were consumable grain-forming mandrels, igniter initiators and pyrotechnics, nozzle ablative materials, nozzle configuration, steel and aluminum stock tubing cases, aluminum impact extruded cases, metal and plastic laminated cases, techniques for joining nozzles and forward closures to cases, thermoplastic and mastic case insulations and adhesives. Performance analyses were made to determine effects of nozzle throat erosion rate, case strength level, thrust profile, and propellant formulation on missile performance. Cost and weight data were combined to determine the best combinations of forward closure with its joining techniques, case, and nozzle with its joining technique.

Subject Categories:

  • Solid Propellant Rocket Engines

Distribution Statement:

APPROVED FOR PUBLIC RELEASE