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Liquid hydrogen slosh waves excited by constant reverse gravity acceleration of geyser initiationThe requirement to settle or to position liquid fuel over the outlet end of the spacecraft propellant tank before main engine restart poses a microgravity fluid behavior problem. Resettlement or reorientation of liquid propellant can be accomplished by providing the optimal acceleration to the spacecraft such that the propellant is reoriented over the tank outlet. In this study slosh wave excitation induced by the resettling flowfield during the course of liquid reorientation with the initiation of geyser for liquid-filled levels of 30, 50, 65, 70, and 80 percent have been studied. Characteristics of slosh waves with various frequencies excited are discussed. Slosh wave excitations will affect the fluid stress distribution exerted on the container wall and shift the fluid mass distribution inside the container, which imposes the time-dependent variations in the moment of inertia of the container. This information is important for the spacecraft control during the course of liquid reorientation.
Document ID
19930048568
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Hung, R. J.
(NASA Headquarters Washington, DC United States)
Shyu, K. L.
(NASA Headquarters Washington, DC United States)
Lee, C. C.
(Alabama Univ. Huntsville, United States)
Date Acquired
August 16, 2013
Publication Date
August 1, 1992
Publication Information
Publication: Journal of Spacecraft and Rockets
Volume: 29
Issue: 4
ISSN: 0022-4650
Subject Category
Fluid Mechanics And Heat Transfer
Accession Number
93A32565
Funding Number(s)
CONTRACT_GRANT: NAS8-36955
CONTRACT_GRANT: NAGW-812
Distribution Limits
Public
Copyright
Other

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