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An analytical study of reduced-gravity propellant settlingFull-scale propellant reorientation flow dynamics for the Centaur D-1T fuel tank were analyzed. A computer code using the simplified marker and cell technique was modified to include the capability for a variable-grid mesh configuration. Use of smaller cells near the boundary, near baffles, and in corners provides improved flow resolution. Two drop tower model cases were simulated to verify program validity: one case without baffles, the other with baffles and geometry identical to Centaur D-1T. Flow phenomena using the new code successfully modeled drop tower data. Baffles are a positive factor in the settling flow. Two full-scale Centaur D-1T cases were simulated using parameters based on the Titan/Centaur proof flight. These flow simulations indicated the time to clear the vent area and an indication of time to orient and collect the propellant. The results further indicated the complexity of the reorientation flow and the long time period required for settling.
Document ID
19750026194
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Bradshaw, R. D.
Kramer, J. L.
(General Dynamics Corp. Convair Aerospace Div., San Diego, Calif., United States)
Masica, W. J.
(NASA Lewis Research Center Cleveland, Ohio, United States)
Date Acquired
August 8, 2013
Publication Date
October 1, 1974
Subject Category
Propellants And Fuels
Report/Patent Number
AIAA PAPER 74-1076
Meeting Information
Meeting: American Institute of Aeronautics and Astronautics and Society of Automotive Engineers, Propulsion Conference
Location: San Diego, CA
Start Date: October 21, 1974
End Date: October 23, 1974
Sponsors: Society of Automotive Engineers, American Institute of Aeronautics and Astronautics
Accession Number
75A10266
Funding Number(s)
CONTRACT_GRANT: NAS3-16772
Distribution Limits
Public
Copyright
Other

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