13/07/2026
A new ASRI–Georgia Tech study was published in the ‘Journal of Electric Propulsion’.
This landmark study, titled “Performance comparison and analysis of low-power Hall thruster operation on atomic and molecular propellants”, and co-authored by researchers from the Asher Space Research Institute (ASRI) at Technion and the School of Aerospace Engineering at the Georgia Institute of Technology (Georgia Tech), presents a comprehensive experimental investigation of the low-power CAMILA Hall effect thruster. Operating at powers under 500 W, the thruster was successfully tested on traditional atomic gases like Xenon, Krypton, and Argon and alternative molecular propellants like Carbon Dioxide and Nitrogen inside ASRI’s electric propulsion laboratory. Characterizing these alternative propellants is incredibly important for the future of space exploration, since molecular gases are highly abundant throughout the solar system. These propellants, such as air (low orbits), water (moon), carbon dioxide (Mars), and others, are prime candidates for in situ resource utilization, and offer a cost-effective, available alternative to conventional propellants.
This milestone shows the benefit of the ongoing collaboration between ASRI and Georgia Tech, which successfully bridges fundamental Plasma thruster physics with world-class experimental testing facilities. This partnership continues to flourish through active educational and research collaborations, including programs where Georgia Tech Aerospace engineering students intern directly at ASRI. Building on this momentum, our joint teams are currently working on another exciting project that utilizes the extensive dataset generated from these multi-propellant testing runs. This project aims to develop a machine learning algorithm designed to predict the performance of Hall effect thrusters operating on molecular or alternative propellants, potentially bypassing the need for exhaustive experimental testing and accelerating the development of next-generation green and cost-effective electric propulsion systems.
A detailed experimental investigation into the performance of a low-power Hall effect thruster (HET), Simplified CAMILA, operating on both atomic (Xe, Kr, Ar) and molecular (CO $$_2$$ , N $$_2$$ ) propellants is performed. The study measures thrust, specific impulse, and internal efficiencies across...