Project Title:

A Superconducting, Ultra-Precision Multi-Sensor

09.04-0540
911672
A Superconducting, Ultra-Precision Multi-Sensor
Satcon Technology Corporation
12 Emily Street
Cambridge
MA
02139-4507
Timothy J.
Hawkey
617-661-0540
LaRC
NAS1-19543
184

09.04-0540 
911672

Abstract:

A Superconducting, Ultra-Precision Multi-Sensor
To meet the need for improved sensor technology for the control of large space structures,
a novel, six-degree-of-freedom, superconducting, multi-sensor will be developed.
The configuration features a superconducting proof-inertia suspended by magnetic
forces in a rebalance configuration with tunneling-tip microscopes providing angstrom-level
position information. The extremely accurate position information and reduced thermal
noise at cryogenic temperatures allow very high precision linear and angular acceleration
measurements to be made. Additional advantages are small size and very low power
consumption. Phase I of the program will involve analytical studies, the establishment
of technical feasibility, and the development of a baseline design for the superconductor,
control system, electronics, sensors, and actuators. Phase II will include detailed
design, fabrication, and testing of a prototype unit.
A successful ultra-precision accelerometer would have many aerospace and commercial
applications in inertial guidance and control units improving the performance and
safety of aviation guidance systems. Series configurations could be used for gravity-gradient
measurement and surveying. Ultra-precision acceleration and angular rate measurements
would also be useful in vibration isolation systems for chip fabrication. 
superconductivity, scanning-tunneling microscope, accelerometer