Cryogenic liquid hydrogen reorientation activated by constant reverse gravity acceleration of geyser initiationA key objective for cryogenic fluid management in a spacecraft propulsion system is development of the technology necessary for acquisition or positioning of liquid outflow or vapor venting. Numerical simulation of positive liquid acquisition is attempted by introducing a reverse gravity acceleration from the propulsive thrust of auxiliary engines which exceeds critical value for the initiation of a geyser. Based on the computer simulation of flow fields during the course of fluid reorientation, six dimensionless parameters resulted. These parameters hold near-constant values through the entire range of liquid filled levels, from 30 to 80 percent, during the course of fluid reorientation.
Document ID
19910025488
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Hung, R. J. (Alabama Univ. Huntsville, AL, United States)
Shyu, K. L. (Alabama, University Huntsville, United States)