Determining liquid fill fraction on a spacecraft

Details Determining liquid fill fraction on a spacecraft Determining liquid fill fraction on a spacecraft

1992-12-02

1995-01-24

Gutierrez, Diego F. F.

Measuring and testing

Liquid level or depth gauge

364509, 364564, 34087016, G01F 2322

Patent

active

053833597

ABSTRACT:
A method and apparatus of determining the fill fraction of a liquid in a spacecraft in weightless space is disclosed. A small motion is introduced about the center of mass of the spacecraft undergoing steady spin and/or thrust, and resulting spacecraft oscillations are sensed. The measured frequency, amplitude and phase of the spacecraft oscillations are compared with counterpart values predicted for possible liquid quantities by a nonempirically computed model of spacecraft dynamics.

REFERENCES:
patent: 4898030 (1990-02-01), Yeh
patent: 4908776 (1990-03-01), Crill et al.

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