Accession Number : AD0479243

Title :   TUNGSTEN INSERT FIRING EVALUATION.

Descriptive Note : Final technical rept. 1 Feb 64-18 Dec 65,

Corporate Author : TRW INC CLEVELAND OH MATERIALS AND PROCESSES DEPT

Personal Author(s) : Lake, Frank N.

Report Date : JAN 1966

Pagination or Media Count : 72

Abstract : The applicability of cast-extruded-forged tungsten throat inserts for solid propellant rocket nozzles was demonstrated. Inserts were prepared to conventional designs from tungsten forgings produced during a previous MATB development program. Instrumented nozzles containing the inserts were assembled and were test fired at the Rocket Propulsion Laboratory (RPL), Edwards Air Force Base. RPL Liquids Division (Alumizine propellant) and Solids Division (solid propellant) test stands were employed for the test firings. Subsequent evaluation revealed that the tungsten inserts were incompatible with the Alumizine propellant environment, and that they performed effectively in maintaining nozzle throat dimensions for long duration firings with solid propellants. Graphitic and plastic-silica laminate nozzle components were also evaluated. Erosion and insulation data obtained from these components are reported. (Author)

Descriptors :   *TUNGSTEN ALLOYS), (*NOZZLE INSERTS, CAPTIVE TESTS, PERFORMANCE(ENGINEERING), FORGING, EXTRUSION, CASTING, SOLID PROPELLANT ROCKET ENGINES, LIQUID PROPELLANT ROCKET ENGINES, GRAPHITE, COMPOSITE MATERIALS, THERMAL INSULATION, EROSION.

Subject Categories : Metallurgy and Metallography
      Rocket Engines

Distribution Statement : APPROVED FOR PUBLIC RELEASE