Patent ID: 11874295
Assignee: EMBRY-RIDDLE AERONAUTICAL UNIVERSITY, INC.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A system for monitoring slosh of a liquid within a propellant tank without requiring use of a moving part, the system comprising:
an electromagnetic transmitter positioned at a first location on or within the tank, the electromagnetic transmitter coupled to a source of electromagnetic energy and arranged to establish a specified electromagnetic field configuration within the tank using a signal from the source;
an electromagnetic receiver positioned at a different second location on or within the tank, the electromagnetic receiver arranged to sense an electromagnetic field established within the tank by the electromagnetic transmitter; and
a control circuit coupled to the electromagnetic receiver, the control circuit configured to determine a characteristic of a spatial configuration of the liquid using the sensed electromagnetic field;
wherein the electromagnetic transmitter is driven using a swept-frequency excitation scheme by the source; and
wherein the control circuit is configured to determine a position or a distribution of the liquid using at least one of a magnitude value, a phase value, a frequency value, or a quality factor value associated with a frequency-domain resonance excited by the swept-frequency excitation scheme.