An accurate prediction of forces exerted by propellant motion on the storage container is required for many space vehicles under a wide range of dynamic environments. Most approximate methods fail altogether or give overly conservative results. A finite difference technique to solve the equations of motion offers a substantial improvement over the approximate methods. One such program, HYDR-3D, developed by Flow Science, Inc., was chosen to conduct propellant motion analysis under some typical space dynamic environments. A partially filled spherical tank was subjected to rotational motion about an axis of rotation outside of the tank to determine the tank sidewall forces and moments caused by such a maneuver. The same tank was subjected to accelerations parallel to the tank axis in order to determine the acceptable acceleration levels to settle the propellant before the engine restart. The program was able to track the propellant configuration through large displacements and provide useful design data. Computed results also compared well with cylindrical container test data at a relatively low Bond number with large liquid surface deformations.
Propellant tank forces resulting from fluid motion in a low-gravity field
Kraefte in einem Kraftstofftank infolge der Fluessigkeitsbewegung in einem Feld mit niedriger Schwerkraft
Symp. on Microgravity Fluid Mechanics, the Winter Annual Meeting of the ASME ; FED-42 , Dez ; 69-73
1986
5 Seiten, 8 Bilder, 1 Tabelle, 7 Quellen
Aufsatz (Konferenz)
Englisch
Simulation of Propellant Explosions Resulting from Crew Launch Vehicle Tank Failure
British Library Conference Proceedings | 2008
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