Affiliation: | aDepartment of Space Transportation Engineering, ISAS/JAXA, 3-1-1 Yoshinodai, Sagamihara, 229-8510, Japan bR&D Department, NOF Corporation, 61-1 Kitakomatsudani Taketoyo, Chita, 470-2398, Japan cM&D Section, Hitachi Engineering & Services Co., Ltd., 2-2, Saiwai-cho 3, Hitachi, 317-0073, Japan dVisualization Division, KGT Inc., 2-8-8 Shinjuku, 160-0022, Japan eDepartment of Mechanical System Engineering, University of the Ryukyus, 1 Senbaru, Nishihara-cho, 903-0213, Japan |
Abstract: | Simulated solid propellant slurry containing lead sphere tracers is experimentally cast into a double-circular cylindrical container. During the casting, the temperature and the pressure environment has been mimicked to an actual composite solid propellant casting of solid rocket motors. X-rays are projected on to the slurry flow from two directions and penetration images are recorded by a flat-panel detector and an X-ray image intensifier. By suppressing the mutual interference of the X-rays, the two-directional X-ray photography has been successfully conducted. Using the time series data of the X-ray images from the two directions, the identification of each tracer particle in space and time has been done and their three-dimensional paths have been computed. From these procedures, the flow field or the velocity field inside the slurry flow, which is usually invisible, has been estimated. |