This report documents the dynamic characteristics of the system of spherical tank/hemispherical expulsion bladder/mercury propellant. The static equilibrium shape corresponding to various allege and gravity configurations was established.nThe static equilibrium shapes of the neoprene bladder have been es-tablished corresponding to various allege and gravity configurations under specified boundary conditions. The hemispherical bladder is taken to be attached at the diametral plane of the sphere with zero relative slope. With these shapes, the spherical tank with bladder and mercury has been modeled as an assemblage of finite-elements.
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