Self-Pressurized Green Propellant Technology Programme Discovery Programme Reference 2006-1 Contractor ALTA S.P.A Start Date 2006 End Date 2007 Country Italy More Like This 3D printed building blocks using lunar soil Modelling Solid Propulsion Stages Magnetic Nozzle Studies for Plasma Propulsion Applications Technology Challenges of Very High Power Hall Thrusters Study of the application of clusterelectric effect for Electric propulsion systems