PolarBEAR - Polar Beacon Experiment and Auroral Research...

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Heating Caus es Polar BEAR to Los e Sens e of Direction Polar Beacon Experiment and Auroral Research Gravity gradient stabilized with boom+tip mass, augmented with pitch wheel Built from a Transit satellite that had been in Launched Nov 14, 1986 on Scout In Feb 1987, solar heating of the boom led to large-angle attitude motions In May 1987, the spacecraft became inverted and stabilized “upside down” Recovery approach was to allow the wheel to spin down, then spin it back up After 3 tries, Polar BEAR re-inverted
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Unformatted text preview: Polar Beacon Experiment and Auroral Research Gravity gradient stabilized with boom+tip mass, augmented with pitch wheel Built from a Transit satellite that had been in the Air & Space Museum for 8 years Launched Nov 14, 1986 on Scout In Feb 1987, solar heating of the boom led to large-angle attitude motions In May 1987, the spacecraft became inverted and stabilized upside down Recovery approach was to allow the wheel to spin down, then spin it back up After 3 tries, Polar BEAR re-inverted...
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This note was uploaded on 12/25/2011 for the course AOE 4140 taught by Professor Hall,c during the Fall '08 term at Virginia Tech.

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