Overview

A system for measuring the mass of liquid in a tank on orbit with 1 percent accuracy was developed and demonstrated. An extensive tradeoff identified adiabatic compression as the only gaging technique that is independent of gravity or its orientation, and of the size and distribution of bubbles in the tank. This technique is applicable to all Earth-storable and cryogenic liquids of interest for Space Station use, except superfluid helium, and can be applied to tanks of any size, shape, or internal structure. Accuracy of 0.2 percent was demonstrated in the laboratory, and a detailed analytical model was developed and verified by testing. A flight system architecture is presented that allows meeting the needs of a broad range of space fluid systems without custom development for each user. Mord, Allan J. and Snyder, Howard A. and Kilpatrick, Kathleen A. and Hermanson, Lynn A. and Hopkins, Richard A. and Vangundy, Donald A. Unspecified Center NASA-CR-185516, NAS 1.26:185516, F88-06-102A NAS9-17616...

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9781724219275

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