Kompsat-3 Deployment Mechanism

Kompsat-3 is an optical earth observation satellite built by the Korean Aerospace Institute (KARI), which was finally launched in 2012.

The Kompsat-3 solar array deployment mechanism (SADM) was the first flight hardware contract for SpaceTech, signed 2005/2006 with Korean Airlines Ltd. The contract also included the delivery of stiffening mechanism for each of the solar arrays, to achieve a high eigenfrequency of the solar array wings in order to allow agile satellite operation/pointing.

Kompsat-3 deployment mechanism key features

The deployment mechanism is based on an earlier patented design by SpaceTech founder Bernhard Doll.

  • Very low friction
  • High torque margin
  • At the same time low deployment shock through a cam/spring driven system

KOMPSAT-3 SADM Deployment TestKOMPSAT-3 SADM deployment test

Kompsat-3 launch

SpaceTech designed, produced and assembled the mechanisms and verified the deployment in a specifically designed zero-g MGSE. The flight models were delivered 2007 and the solar arrays were successfully deployed after launch of Kompsat-3 on May 2012.