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Ways to do propellant tanks, with a view on preventing the propellant from "sloshing about". This sloshing could be either actual sloshing of liquid under gravity/acceleration in a tank, or the need for ullage control in a gravity-less tank. The naked case: just a spherical/capsule shaped tank containing liquid: Pro: easy to make, very light. Con: ...


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Sloshing is not a problem in zero-g conditions. A key challenge with regard to starting the firing of a thruster in a zero-g situation is to get the propellant flowing to the thruster, without any ullage gas also flowing to the thruster. This is the primary reason some spacecraft use bladdered tanks. Other spacecraft do not have bladders in their propellant ...


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