Experimental techniques were developed for measuring slosh damping in a variety of tank and baffle configurations. The various methods were compared and shown to be in satisfactory agreement. The Able-Star damping investigation made use of one of the methods having the broadest application possibilities. A systematic variation of tank shape parameters is continuing in support of ballistic missile programs like ATLAS, TITAN, and THOR, and in preparation for the needs of future space explorations systems. Nonlinear damping effects were investigated. Waves sweeping across a domed tank bottom resulted in plunging flow with high but erratic damping. Waves splashing against damping rings were quickly damped, but a new slosh mode persisted with low damping. (Author).
"Experimental techniques were developed for measuring slosh damping in a variety of tank and baffle configurations. The various methods were compared and shown to be in satisfactory agreement. The Able-Star damping investigation made use of one of the methods having the broadest application possibilities. A systematic variation of tank shape parameters is continuing in support of ballistic missile programs like ATLAS, TITAN, and THOR, and in preparation for the needs of future space explorations systems. Nonlinear damping effects were investigated. Waves sweeping across a domed tank bottom resulted in plunging flow with high but erratic damping. Waves splashing against damping rings were quickly damped, but a new slosh mode persisted with low damping. (Author)."@en
"The report covers the entire program to date on a laboratory investigation to obtain experimental information necessary for evaluation of current slosh-baffle designs and for verification and extension of existing theory on sloshing phenomena and control. A detailed understanding of propellant sloshing phenomena will permit rational design changes, if required, on Atlas, Titan and Thor, and will contribute toward the design of minimum-weight slosh control in future ballistic missiles and space exploration systems. The measurements for the principal objective of the original program plan (165-11) were completed. The data provided experimental verification of the currently-used theory for the forces on slosh-damping rings and resulted in an extension of the range of application of the theory. Other phases of the study resulted in a reassessment of areas now considered of primary importance and warranting further experimental investigation. (Author)."@en
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