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Proceedings Paper

Development of a superconducting angular accelerometer
Author(s): Peter J. Shirron; Vol Moody; Ed Canavan
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Paper Abstract

A novel monolithic device is described which has the capability of resolving angular accelerations in a single axis to 10-10 rad s-2 Hz-1/2. The device consists of a niobium proof mass attached to a housing via a torsional spring, and is operated at a temperature below 9.2 K so that the niobium is superconducting. Angular accelerations cause proportional angular displacements of the proof mass and, because of the Meissner effect in superconductors, changes in the inductance of superconducting coils located near the proof mass. Changes in inductance are sensed by a superconducting quantum interference device through the modulation of persistent currents. The angular accelerometer is being designed for use at frequencies below 1 Hz, so the resonant frequency of the proof mass is on the order of 10Hz. It is intended for use with the University of Maryland's superconducting gravity gradiometer to allow removal of angular and centrifugal acceleration-induced errors. Design parameters, assembly techniques and performance testing are discussed.

Paper Details

Date Published: 14 October 1996
PDF: 10 pages
Proc. SPIE 2814, Cryogenic Optical Systems and Instruments VII, (14 October 1996); doi: 10.1117/12.254141
Show Author Affiliations
Peter J. Shirron, NASA Goddard Space Flight Ctr. (United States)
Vol Moody, Univ. of Maryland/College Park (United States)
Ed Canavan, Univ. of Maryland/College Park (United States)

Published in SPIE Proceedings Vol. 2814:
Cryogenic Optical Systems and Instruments VII
Lawrence G. Burriesci; James B. Heaney, Editor(s)

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