• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.50 no.8
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• pp.559-572
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• 2022

Recently, with the success of the world's first On-Orbit service (OOS) mission MEV (Mission Extension Vehicle)-1 in 2020, interest in OOS is increasing at home and abroad. In particular, the mission of OOS and active debris removal (ADR) service, which was difficult to find in the old space era in the past, is expected to enter the new space industry in the near future. Therefore, this paper examines the development cases of domestic and foreign OOS technologies, and describes the characteristics of major technologies required, domestic status and development potential, and the possibility of future OOS mission development. The technology trends and future prospects of OOS described in this paper are expected to be useful reference materials for further researching related fields in domestic situations where related research is insufficient.

• Journal of Space Technology and Applications
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• v.2 no.1
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• pp.30-40
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• 2022

This paper illustrates the trajectory design of drift distance recovery after initial launch and proximity operation when verifying rendezvous/docking technology using nanosatellites. The rendezvous/docking is a technology that is the basis of on-orbit servicing technology and is a preemptive process essential for approaching a target object. In particular, since it is difficult to verify in space, nanosatellites have recently been used to reduce the risk and cost of the development stage. Therefore, this paper not only introduces the configuration and specifications of thrusters for nanosatellites but also designs relative trajectories that can take into account the thrust limitations which come from the small size and low power of nanosatellites. In addition, we intend to be helpful in later designing scenarios according to the improvement of available thruster performance through comparison of trajectories and thrust usage with cases without thrust limitations.