친환경 이원 우주 추진시스템의 국내외 연구개발 동향 및 전망

Chemical bi-propellant space propulsion systems are usually used for space missions that require high thrust levels. The technology of bi-propellant space propulsion systems are essential to be competitive in future space development. Hydrazine based space propulsion systems have the advantage of storability characteristics with high specific impulse, however hydrazine is a highly toxic substance that can cause several issues. Green space bi-propellant propulsion systems also have high storability and specific impulse enough to replace hydrazine. In this paper, the performances of the green bi-propellant space propulsion systems are analyzed through an investigation of current researches. The Performance of the green propellants based(especially HAN(Hydroxylammonium nitrate), ADN(Ammonium dinitramide), Hydrogen peroxide, Nitrous oxide, Water, White Fuming Nitric Acid) and hydrazine based space propulsion systems were compared and analyzed. The specific impulse values of the green bi-propellant space propulsion systems were similar to hydrazine space propulsion system. Green space bi-propellant propulsion systems have more storability and are more economical than Hydrazine-based space propulsion systems.