Transcript Geosat Follow On (GFO) Just a Sign Error (Partial Credit?)

Geosat Follow On (GFO)
Just a Sign Error (Partial Credit?)
• Three-axis stabilized (MWs), single solar array with 1axis articulation, hydrazine thrusters for orbit
maintenance, 370 kg
• Launched Feb 10, 1998 on Taurus
• Spacecraft tumbled instead of
achieving correct attitude
• Study of telemetry and the eqs
of motion led to conclusion that
momentum and torque were in
the wrong direction
• Uploaded corrected tables
• Within hours, satellite was sun-pointing within 0.02°
with rates of less than 0.006°/s