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Solar Dynamics Observatory Gallery


Detail of the reaction control wheels. Similar in concept to control moment gyros, they're used to maintain or fine-tune the satellite's orientation in space without using thrusters.

For a somewhat technical description of the system, refer to Attitude Control System Design for the Solar Dynamics Observatory.

Time picture taken Wed Jun 27 15:02:02 2007
Location picture taken Various Working Areas
Goddard Space Flight Center
Greenbelt, MD
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