The Scanning Drive Mechanism consists of an upper stage that carries the instrument and a lower stage that provides the scan compensation and keeps the system drag free with respect to the spacecraft. Both drive systems are identical and driven by a brushless DC motor. An integrated slip-ring assembly provides power and signal lines for the instrument.
|Main dimensions – mechanism||200 x 180||mm|
|Total mechanism mass||6.4||kg|
|Mass of rotary load||kg|
|Lifetime revolutions||47 x 106||revs|
|Earth scan angle and scan profile||Customer request||°|
NOAA, Envisat, Metop