Magnetohydrodynamic angular rate sensor for measuring large angular rates
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United States of America Patent
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Nov 26, 1991
Grant Date -
N/A
app pub date -
Oct 25, 1989
filing date -
Oct 25, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An electronic motion sensor is described, wherein a cavity formed in a case of high flux density material supports a permanent magnet at the bottom. The permanent magnet has a north/south pole orientation in line with the cavity axis. A circular channel is located above, having an axis coincident with the cavity axis and which is filled with mercury. A center contact post is located long the cavity axis in contact with the mercury, extending upwards through the top of the channel. An amplifier circuit supported on a header of high flux density material is placed on top of the channel. The amplifier amplifies the potential difference between the center contact and the case. The header effectively seals the cavity of the case.
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