ECLIPSE Thruster: Endurance Test Results of a Reliable Propulsion System for Precise Satellites Maneuvers

The ECLIPSE thruster, developed by Forschungs- und Technologietransfer GmbH (FOTEC), is an advanced Field Emission Electric Propulsion (FEEP) system designed for precise satellite maneuvering in long-duration scientific, Earth observation, and deep-space missions. Building on the proven heritage of the IFM NANO Thruster, ECLIPSE introduces several enhancements, including an enlarged reservoir, a focusing electrode for improved beam alignment, and optimized thermal management to reduce power consumption. The system offers a nominal thrust range up to 500 μN with high specific impulse and exceptional operational control. This paper presents results from a 540-hour endurance test aimed at evaluating the thruster’s durability and performance stability in a vacuum environment. Initial findings demonstrate promising consistency and reliability, with anticipated design refinements guided by test data. The results will support the qualification of ECLIPSE as a reliable, modular propulsion subsystem for future space applications.