Accession Number : AD0376769

Title :   HIGH ENERGY PROPELLANT INGREDIENT RESEARCH AND DEVELOPMENT.

Descriptive Note : Quarterly technical rept. no. 3, 1 Jul-30 Sep 66,

Corporate Author : DOW CHEMICAL CO MIDLAND MICH SCIENTIFIC PROJECTS LAB

Personal Author(s) : Matzek,Norman F. ; Daniels,Roger D. ; Roberts,Charles B. ; Snover,John A. ; Wilson,Edwin J.

Report Date : 15 OCT 1966

Pagination or Media Count : 69

Abstract : Studies on the preparation and properties of AlH3-1451 continued. Magnesium has been incorporated into product made by the continuous crystallization technique; improved thermal stability is observed in product from the larger scale unit. Teflon FEP shows excellent promise as a material of construction; a larger scale crystallizer has been fabricated from FEP stock items. Structure studies of AlH3-1451 show the decomposition mechanism involves loss of hydrogen and formation of aluminum nuclei and anion vacancies. Density measurements of Mg-doped AlH3-1451 show that magnesium forms a substitutional solid solution. The degree of improvement in thermal stability of 'aged', Mg-doped batch samples of AlH3-1451 correlates with initial gassing observed at 60 C on a Taliani apparatus. Water, identified as a major component of the gas, may play a major role in the aging process. Heat treatment and storing under hydrogen increased the thermal stability of some AlH3-1451 samples. Double base propellant containing Mg-doped and Mg-doped, in situ DPA-treated AlH3-1451 shows a twofold improvement in stability over standard hydride at 25 and 40 C Mg-doped, in situ DPA-treated and Mg-doped, 'aged' AlH3-1451 are very stable at 60 C. Propellant containing 'aged', Mg-doped AlH3-1451 decomposed 0.57% after 146 days. Mg-doped, in situ DPA-treated AlH3-1451 reach 1% decomposition in double base propellant in 173 days; in composite propellant it reached 0.84% decomposition in 91 days.

Descriptors :   (*SOLID ROCKET PROPELLANTS, SCIENTIFIC RESEARCH), THERMAL STABILITY, DECOMPOSITION, AGING(MATERIALS), OPTIMIZATION, STABILITY, STORAGE, LIFE EXPECTANCY, EFFECTIVENESS, COMPATIBILITY (U) HYDRIDES, ALUMINUM COMPOUNDS, PRODUCTION, HYDROGEN, DOPING, MAGNESIUM, SOLID SOLUTIONS, COMPOSITE PROPELLANTS, BIPHENYL, AMINES

Subject Categories : Solid Rocket Propellants

Distribution Statement : APPROVED FOR PUBLIC RELEASE