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50th AIAA/ASME/SAE/ASEE Joint Propulsion Conference
A key requirement of a low-gravity screen-channel liquid acquisition device (LAD) is the need to retain 100% liquid in the channel in response to propellant outflow and spacecraft maneuvers. The point at which a screen-channel LAD ingests vapor is known as breakdown, and can be measured several different ways such as: visual observation of bubbles in the LAD channel outflow; a sudden change in pressure drop between the propellant tank and LAD sump outlet; or, an indication by wet-dry sensorsdoi:10.2514/6.2014-3582 fatcat:twv5ofxmyjhzxg4eer4rnng3la