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Ultrasonic void estimation system for determination of liquids in microgravity tanks

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3 Author(s)
Roberti, D. ; Dept. of Electr. Eng., Worcester Polytech. Inst., MA, USA ; Looft, F.J. ; Ludwig, R.

An ultrasonic measurement technique has been developed for determining the quantity of liquid storage tanks in the microgravity environment. When the void fraction in a vessel is sufficiently small and the liquid wets the vessel, a spherical void interior to the liquid forms. The proposed procedure, the void estimate center technique (VECT), uses an iterative algorithm to compute the center location and thus the radius of a spherically shaped void. The VECT algorithm has been developed as a two-dimensional model that can also be easily extended to three-dimensional problems. After evaluating different transducer locations, a prototype was constructed and its performance was evaluated. Both system design and hardware are discussed in detail

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Instrumentation and Measurement, IEEE Transactions on  (Volume:37 ,  Issue: 4 )