Abstract: Recent space developments are implementing several simpler and less expensive rocket technologies. Environmental concerns and following governmental restrictions necessitate to replace current (hydrazine-based) toxic propellants with green ones, with a minimum loss of performance. Hydrogen peroxide is a promising candidate for the future of green propellants due to its flexibility and its benign nature allows the advancement of simple, cost-effective, and environmentally friendly propulsion with sufficient performance to replace hydrazine or other high-performing toxic propellants. Consequently, this thesis is devoted for the study of hydrogen peroxide-based propellants for future space propulsion applications.