Initiation of geyser during the resettlement of cryogenic liquid under impulsive reverse gravity acceleration in microgravity environmentThe requirement to settle or to position liquid fluid over the outlet end of spacecraft propellant tank prior to main engine restart poses a microgravity fluid behavior problem. Resettlement or reorientation of liquid propellant can be accomplished by providing optimal acceleration to the spacecraft such that the propellant is reoriented over the tank outlet without any vapor entrainment, any excessive geysering, or any other undesirable fluid motion for the space fluid management under microgravity environment. The purpose of present study is to investigate most efficient technique for propellant resettling through the minimization of propellant usage and weight penalties. Comparison between the constant reverse gravity acceleration and impulsive reverse gravity acceleration to be used for the activation of propellant resettlement, it shows that impulsive reverse gravity thrust is superior to constant reverse gravity thrust for liquid reorientation in a reduced gravity environment.
Document ID
19910034516
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)