Accession Number : AD0261162

Title :   AN INVESTIGATION OF IMPROVED THRUSTER DAMPER MEDIA FOR OPERATION AT HIGH TEMPERATURES. LIQUID PHASE, PART I

Corporate Author : FRANKFORD ARSENAL PHILADELPHIA PA PITMAN-DUNN RESEARCH LABS

Personal Author(s) : WARREN,F.A.

Report Date : APR 1961

Pagination or Media Count : 1

Abstract : DESCRIPTORS: *Expl sive actuators, Damping Liquids, Encapsulation, Silanes, Gels, Clays, Containers, Calcium compounds Alginates, Films, Thermal expansion, Hydraulic fluids. A study is being conducted of (1) thruster damping luids for operation at temperatures in excess of 200 F and (2) prevention of leakage by encapsulation. Damping fluid encapsulated in spherical capsules of approximately 1/ in. diameter, either as discrete particles or compressed into a cellular structure, appeared to have potential as a particularly effective leakage preventative. Multicellular masses offer another way to provide a compartmented container fon the damping fluid. Silanes, chain-type dibasic acid esters, organic phosphates, ferrocenes, and sodium potassium alloy (in addition to the silicones) possess characteristics which make them attractive as potential damping fluids. Aqueous and nonaqueous clay suspensions possess desirable characteristics as possible damping fluids. One oleophilic gel remained viscous at 338 F. The volumetric expansion of Dow-Corning Silicone Fluid 2 0 was measured and an apparatus constructed to establish the safe-filling limits for thrusters containing this fluid. (Author)

Descriptors :   *EXPLOSIVE ACTUATORS, ALGINIC ACID, CALCIUM COMPOUNDS, CLAY, CONTAINERS, DAMPING, ENCAPSULATION, FILMS, GELS, HYDRAULIC FLUIDS, LIQUIDS, SILANES, THERMAL EXPANSION

Distribution Statement : APPROVED FOR PUBLIC RELEASE