E. Common Infrastructures Enhancing In-Space Propulsion Capabilities

Various propulsion devices used to control the orbit and attitude of satellites and probes are collectively referred to as the in-space propulsion system. These systems are broadly classified into two types: electric propulsion, which provides low thrust but high fuel efficiency, and chemical propulsion, which can generate instantaneous high thrust.

The primary objective of this research is to formulate a strategy for effective research and development of in-space propulsion systems and strengthen core technologies. Currently, the research focuses on three main areas:

Electric propulsion (Hall thrusters and others)
Chemical propulsion (green propulsion, bipropellant propulsion, and small solid rocket motors)
Multimode propulsion, which combines electric and chemical propulsion capability within a single system.

Significance of the Research

In-space propulsion systems are essential technologies that enable spacecraft mobility in space. Their applications are wide-ranging, from satellites in low Earth orbit and geostationary orbit to probes and vehicles for the Moon, Mars, and beyond.
Given this diversity in applications and mission scales, it is important to formulate strategies for researching, developing, and deploying propulsion systems tailored to each system and mission. Strengthening the foundational technologies that support these strategies is equally critical.

Research Objectives

Strategy Building

This activity will provide direction for research, development, and utilization of in-space propulsion systems by reviewing the wide range of propulsion technologies and their applications.

Strengthening Core Technologies

This activity will enhance the essential technologies for in-space propulsion (electric, chemical, and multimode) required to support the independent execution of diverse space missions.