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We describe the design and development of a cryogenic tilt table that will be used to test the flight hardware for NASA’s Satellite Test of the Equivalence Principle (STEP). Our table can tilt the hardware around two axes and is part of a test bed that has 6-degree-of-freedom controllability. The goal was to build a tilt table with a resolution better than ∼5 μrad (1 arcsec). Our table consists of...
The effect of magnetic tape thickness and tape substrate material on friction and wear is very important in functioning of future linear tape drives with ultra-thin tapes. This effect is studied using a magnetoresistive (MR) type head with metal particle (MP) tapes of two different substrate materials, and two different substrate thicknesses for each material. A new technique to measure friction directly...
Environment plays an important role in the functioning of tape drives and the exact reproduction of the stored data. The magnetic and tribological performance of metal particle tape at ambient and extreme temperature and humidity conditions was evaluated in a commercial tape drive. Head output and head-tape interface friction were monitored during short pass (10m) shuttling tests. Optical microscopy,...
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